ENGLISH-TRANSLATION OF A SOVIET MANUAL ENTITLED 130-MM GUN-HOWITZER M-46 AND 152-MM GUN-HOWITZER M-47, SERVICE MANUAL

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80T00246A031200160001-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 562
• Document Creation Date: December 23, 2016
• Document Release Date: September 24, 2013
• Sequence Number: 1
• Publication Date: February 5, 1964
• Content Type: REPORT

Declassified in Part - Sanitized Copy Approved for Release 2013/09/24 :
1
CIA-RDP80T00246A031200160001-7
eNext 4 Page(s) In Document Denied
&
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24:
CIA-RDP80T00246A031200160001-7 dIr
p.? ? 50X1
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Ap
CENTRAL INTELLIGENCE AGENCY
?
This material-contaills information affecting the National Defense of the United States within the r ? . to ? ?e p onage Laws, Tit
18- US Secs. 793 and 794, the transmission or revelation of which in any manner to an untrithorized person is prohibited by lay
C?P_r_n
COUNTRY USSR
English-Translation of a Soviet
Manual Entitled 130-mm Gun-
Howitzer M-46 &fvice
-
DATE OF
INFO.
PLACE &
DATE ACQ.
REPOR1
50X1
DATE DISTR,
NO. PAGES
REFERENCES
February 1964
HIS IS ILINFVAI HAIM
1
50X1
50X1-HUM
50X1-HUM
of a Soviet manual entitled
ir ? zer M-47, Service50X1-HUM
-HUM
-HUM
t.
10 A copy of an English translation
130-mm Gun-Howitzer M-46 and 152-mu
Ranua.P.
ussign-language
MilitA*ry
1962
The
the
Moscow,,
-1
.50X1
'50X1
version ot the manual, published by
Publishing House nf f IIP Ministry of Defense
50X1-HUM
Distribution of Attachment for Retention:
00/FDD:
OSI
ORR:
1 c6py
I copy
2 copies
'Ill7my,
Army/FSTC:
4 copies
6 copies
Navy :k-
1 copy
'1
Navy/STIC:
1 copy
Air:
1 copy
\
Air/FTD:
1 copy
SAC:
1 copy
NSA:
2 ronipc
'
r- 4
3
2
1
'
qtNe . NA. IMMY INIMN
067)D ? Army/FSTC
tribution indicated by 4".)
I AIR I NSA IXO NIC loCR ISAC
Navy/STIC Air/PTD
J
FORMATION REPORT
11.
npriaccified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
R
50X1 -HUM
Next 1 Page(s) In Document Denied
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
MINISTRY OF DEFENSE USSR
50X1-HUM
IO-Wm GUN-HOWITZER M-46 and 152-nim GUN-HOWITZER M;747
SEIIVICE MANUAL
50X1-HUM
" Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
!
TABLE OF CONTENTS 50X1-HUM
PART ONE
Description of the 130-mm Gun-Howitzer m-46
and the 152-mm Gun-Howitzer M-47 Page
Chapter One. General Information 1
1. ,Mission and Combat Characteristics of the 130-mm
Gun M-46 and the 152-mm Gun M-47
Brief Information on the Construction of the Guns 3
General Instructions on Dismantling and Assembling
the Gun ' 7
Parts Numbering. System
1
9
Chapter Two.' Barrel and Breech
11
5. 130-mm M-46 .Gun Barrel With Loose Tube
11
6. 152-mm m-47 Gun Barrel With Loose Tube
23
Monobloc Barrel
23
7. Dismantling and Assembling Barrel With Loose Tube
24
Dismantling Monobloc Barrel
27
8. The Breech
30
9. Operation of Breech Mechanisms
43
10. Dismantling and Assembling the Breech
45
Chapter Three. Cradle and Counterrecoil System
50
- U. The Cradle
50
12. Cradle Dismantling and Assembly
62
13. The Counterrecoil Mechanism
68
14., Operation of the Recoil-Limiter Mechanism
79
?
15. Operation of the Counterrecoil Mechanism During
Recoil
82
16. Function of Interlocking Mechanisms
84
17. General Information on the Disassembly and Assembly
of Counterrecoil Mechanisms
86
:
18. Disassembly and Assembly of the Recoil Brake
87
'
19. Disassembly and Assembly of the Counterrecoil
Cylinder
96
? Chapter Four. Top Carriage and Shield Assembly 106
20, The Top Carriage . ' 106
21. Dismantling and Assembly of the Top Carriage 114
22. The Shield Assembly ? ? 117
Chapter Five. The Elevating) Traversing and Equilibrator
Mechanisms 123
23. The Elevating Mechanism ' 123.
50X1-HUM
. ,
, Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
Page
Chapter Five (continued)
2h. Operation of the Elevating Mechanism 129
25. Disassembly and Assembly of the Elevating Mechanism 129
26. The Traversing Mechanism 139
27. Operation of the Traversing Mechanism 1h0
28. Disassembly and Assembly of the Traversing
? Mechanism lhO
29. The Equilibrator ' 1h6
30. Operation of the Equilibrator 152
31. Disassembly and Assembly of the Equilibrator 153
Chapter Six. Bottom Carriage and Trails 155
32. The Bottom Carriage 155
33. Operation of the Suspension Mechanism 165
.3h. Disassembly and Assembly of the Bottom Carriage 167
35. The Trails 1, 173
Chapter Seven. Winch and Jacks 0000 OOOOOOO 000000?00410 OOOOO 0 OOO 0 O 183
36. The Winch ..... OOOOO ........ OOOOOOO MOO OOOOOOOOOOOO 0OO 183
37. Operation of the Winch OOOOOOOOOOOOOO ........... OOO 11% O 9 187
38. Disassembly and Assembly of the Winch 190
39. Tho Jacks . 193
ho. Operation of the Jacks 194
hl. Disassembly and Assembly of the Jack 198
'Chapter Eight. Wheels, Wheel Brake and Electric Lighting
h2. The Wheels
43. The Wheel Brake
h4. Operation of the Wheel Brake
h5. Disassembly and Assembly of the Wheel Brake
h60 Electric Lighting
OOOO
202
202
202
214
220
221
Chapter Nine. Sight Attachments 229
. h7. General InformationOOOO 229
h8. Mechanical Sight S71-35 (571-96)
230
h9. Dial Sight PG-I, 248
.50. Extension of the Dial Sight Socket ...de 251
510 'Gun Collimator K 1 d OOOOOOO dcoo 252
52. Optical Sight OP-b.-35 (0P-4-96) O ? OOO 0 OO 0 OO O000000 O i OOO 265
.53.; Illuminating Instrument 1.1)Ch-S7I14 ., 280
,
Chapter Ten. Limberdi.od 283
.....'
'5h. Construction of the Limber ..... Q..... 283
55. Disassembly and Assembly of the Limber ................. 289
???.
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
Chapter p_even. Spare Parts, Tools and Accessories
56. General Information
57. The Hydro-Pneumatic Pulp (52-1-035) and Hand
Extractor
ChapteriTwelve. Disassembly and Assembly of the Gun by
Page
293
293
295
Large Units
312
58. Disassembly of the Gun by Large Units
? 312
59. Assembly of the Gun ,
.320
60. Adjustment of the Gun Mechanisms After Assembly
326
Chapter Thirteen. Ammunition
?330
61. General Instiuctions
330
62. Brief Information on Rounds
330
63. Puroose of Rounds
331
64. Design and Function of Rounds and Their. Elements
331
- 65. Stamping, Stenciling and Marking of Ammunition
370
66. Handling of Ammunition at the Firing Position
382.
PART TWO
Combat Service of the 130-mm M-46 and 152-mm M-47 Guns
Chapter Fourteen. Preparation of the Gun for Firing and
Traveling
387 ,
67. General Instructions
387
68. Inspection of the Gun and Limber and Checking the
? Operation of the Mechanisms
387
69. Checking the Counterrecoil Devices and Adjusting.
the Equilibrator
394
70. Inspecting and Checking the Sight Attachments
408
Chapter Fifteen. Handling the Gun During Firing and
Traveling
428 ?
71.
Changing the Gun From Traveling. to Firing Position ....
428
72.
Preparing the Gun for Firing at the Firing Position
... 431
73.
Laying the Gun
432
74.
Loading and Firing the Gun
434
75.
Firing With Blank Rounds
434
76.
Observation of the Gun During Firing
435
77.
Handling the Gun in High and Low Temperatures
437
78.
Possible Malfunctions of. the Gun During Firing and
.50X1-HUM
Methods for Their Correction ?
4,(
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
? 79. /Changing the Gun From Firing Position to
Page
? Traveling Position 0
453
80. Inspection of the Gun Before a March
455
81. Supervision Over the Gun in March
456
82. Temporary Repairs While in Travel .
457
1 83. Inspeation of Guns After Prdlonged Traveling
? Under Special Conditions
457
Chapter Sixteen. Technical Inspection of Equipment and
Elimination of Defects
'459
84. General Instructions
459
85. Inspection of the Gun in Assembled Condition
1460
86. Inspection of the Dismantled Gun
474
Chapter Seventeen. Preservation and Storage of Materiel ...
482
87. General Instructions
482
88. Cleaning and Lubricating the Barrel and Breechblock
486
89. Cleaning and Lubricating the Gun Carriage and -
the Limber
488
90. Storage of Materiel
1490
91. Regulations for Maintaining the Iog
495
Appendices:
1.
Parts List of the m-146 130-mm Gun and the M-47
152-mm Gun
497
2.
Basic Tactical-Technical Data on the M-46 and M-/47
....
1498
3.
Lubrication Guide ? ? ??
? ?
. .c)c)
4.
Illustrdted Guide to Spare ?arts, AcCessories and
Tools for the M-146 and M-147 Guns
i.
506
5.
Basic Tolerances Adjustable During Assembly and
Use of the M-46 and M-44.7 Guns . ,
551
6.
Method of Securing the Weapon on la Flatcar
.555
Declassified
50X1 -HUM
n Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Note:
50X1-HUM
References made in the text to Cyrillic-lettered
parts in photographs or diagram a have been trans-
literated into English, rather than transcribed
in Cyrillic, in accordance with the following
transliteration table:
Pp
Cc 8
T T
Y y u.
gl)
kh
te
eh
eh
813021
ft
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
. Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
[13 3]
PART ONE
DESCRIPTION OF THE 130-ram GUN-HOWITZER M-46
? AND THE 152-mm GUN-HOWITZER M-47
CHAPTER ONE
GENERAL INFORMATION
1. Mission and Combat Characteristics of the 130-r- M-46 and
the 152-mm Gun M-47
- The 130-mm gun M-46 (Figures 1 and 2) 7ne 152-m.:. jnti:-47 are
designed:
- for combat with enemy artillery and mortars and the : :;raliza-
tion of infantry and tank concentrations
?
? .4;
' ? t
;.;
Figure 1. General View of the 130-mm gun M-46 in the firing position
.at 0? angle of elevation
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1 -HUM
Figure 2. General .view of the 130-mm gun M-46 in the traveling position
- for the destruction of permanent defensive ground installations and
other hardened field type installations;
-- for shelling the enemy rear;
- for combat with enemy self-propelled artillery and heavy tanks.
A separate cartridge charge with a high-explosive fragmentation p 4)
shell or an armor-piercing tracer shell is used in firing the M-46
and the M-47 guns.
Maximum range of the M-46 gun is about 27 km (with a muzzle velocity
of 930 m/sec) and the maximum range of the M-47 - about 20.5 km (with
a muzzle velocity of 770 misec).
The horizontal firing angle of both guns is 50? (25? to the left
and to the right) and the vertical firing angles are from -2?30' to
-f- 45?.
The rate of fire of the M-46 is from seven to eight rounds per
minute, and that of the M-47 - five to six rounds per minute.
50X1 -HUM
, Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
1
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
Figure. 3. General view of the 152 mm gun M747- in firing position
with an angle of elevation 450
The weight of both guns4s.the same: about 7,700 kg in firing
position and about 8,450 kg ln traveling position.
The guns axe toed by a tractor. The medium artillery tractor
AT-S is authorized for- this use. Permissible speed for the guns on good
roads is 50km/hr and 10-20 km/hr.on open terrain. The transition time
for the M-46 and M-47 guns from firing position to traveling, and vice
versa, is 3 to 4 minutes.
2. Brief Information on the Construction of the Guns
The 130-mm M-46 and the 152-mm M-47 guns differ .with respect to design
only in the construction of the loose tube barrels and muzzle brakes,
and in the graduation markings of the sights; all other parts and
components are identical. '
. This service manual gives the description of the construction of.
the 130-mm M-46 gun; however, all that is said about the 130-mm gun
applies equally to the 152-mm M-47. 50X1-HUM.
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
Tha.gun consists of the following basic parts:
Barrel with loose tube, housing, breech ring, and Muzile brake. ??
The housing has clamps for guiding the barrel along the cradle and for
fastening the conterrecoil mechanism. ?
Late model guns have a monobloc-barrel
Breech, block type, horizontally sliding, opening to the right.
The breech is opened and closed by turning the breech mechanism lever.
Firing is carried out by pulling the push rod, located on the 'cradle
shield, which in turn turns the cocking lever of the firing pin.
Cradle ,with the trunnions ,lies in the trunnion bed of the top
carriage to which it is fastened with clamp rings. The barrel recoils
and returns along the cradle guide.
[p 5]
The recoil buffer is located in the cradle. The caunterrecoil buffer
rod is fastened in a stirrup, located in the front portion of the cradle.
The elevating mechanism is attached to the lower side of the cradle.
Recoil buffer - hydraulic type. The buffer cylinder is fastended to
the gibs of the cradle. The recoil buffer piston rod recoils during
the firing together with the barrel. The buffer is filled with 28.7
liters of "steol M". The length of recoil is variable; it is controlled
by a mechahism for varying the recoil distance depending on the angle
of elevation.
At -2?30 to 200 barrel angles of elevation, long recoils of 1150
to 1320 mm take place; at angles of elevation of 340 to 45?,- short
recoils of 735 to 815 mm; and at angles of elevation between 20? and
342 - variableifrom long to shortrecoils..
Recuperator - hydro-pneumatic, fastened to the barrel gibs. The
recuperator cylinders recoil with the barrel; however the rod, fastened
to the cradle stirrup is stationary. Normal pressure in the recuperator
is 56-1- 2 atm. The recuperator is filled with 21.6-4- 1 liters of "stool
M." ?
The top carriage serves as the base for the tipping parts of the
gun; it rests on the bottom carriage and is connected to it by a pintle
about which it can rotate. The front gib keeps the carriage from turning
over during firing.
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24 : CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
The elevating and the traversing mechanisms are mounted on the top
carriage. Both mechanisms are of the arc type. The hand wheels for the
elevating and the traversing mechanisms are located on the left side of
the top carriage.
Equilibrator - hydro-pneumatic, of the pusher type; it consists of
two columns located behind the shield on the right and the left sides of
the cradle. A compressed air tank is fastened to the top carriage for
controlling the pressure. At a 450 angle of elevation, the pressure in
the equilibrator is about 25 atm, and at a 20? 30' angle of depression -
about 44 atm.
The bottom carriage is a steel casting and serves as the base for the
rotating part of the gun.
The trails are hinged to the lower carriage. A suspension, consisting
? of two balance beams and a system of sleeves and levers which are
connected to the lower carriage by flexible torsion shaftslis mounted on
the lower carriage.
The trails are beams welded out of plate and angle iron. Forked
knuckle joints are located on the forward part of the trails for
connecting the trails to the lower carriage; winter spades are
mounted on the end of the trails.
Summer .spades are interchangeable. The ends of the trails, when
in the traveling position, are fastened with a drawbar and connected to
the limber. :
Jacks - hydraulic,. fixed to the trails, are used for raising and
lowering the trails to and from the limber.
Winch - fixed to the right trail, is used for pulling the barrel Lp 6]
.fl into traveling position and for extending it back into firing
position.
? Sighting devices consist of a mechanical sight and a panoramic sight.
In addition, there is an optical sight designed for firing by direct
laying. The sights are fixed to the cradle on the left side of the gun.
The shield assembly consists of a shield and a jacket made of armor
steel. The shield is fastened to the upper carriage with brackets A
box for stowing the panoramic sight and extension of the panoramic socket
and a case for the gun log book are attached to the shield.
50X1-HUM
??????
?
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
(Th
50X1-HUM
The jacket protects the recuperator from bullets and shell fragments.
. The jacket is secured to catches on the barrel. .
' Wheel brakes are of the shoe type, pneumatically controlled from
the prime mover.
The wheel brakes are designed for braking the gun during traveling.
There is a manual control lever for braking the gun during traveling
when the air brake controls fail and also for braking the gun when it is
disconnected from the prime mover. During firing, the wheels arc braked
manually.
Wheel - single disk type with 1350 x 380 Gk tires.
The limber has a pintle frame on which the rear trail assembly is
mounted when in the traveling position. The frame of the pintle rocks
in a transverse direction and rotates about its axis, making the move-
ments of the gun and the limber independent and providing ease of
handling.
1
Flexibility of movement is achieved with the hinged joint of the
limber shaft. In traveling, the limber shaft is connected to the tow
hook of the prime mover. The pintle frame is mounted on springs.
Before traveling, the gun is brought from firing position into
traveling position, for which the trails are drawn together and mOunted
with a draw bar on the limber pintle and, secured with a wedge. The
barrel iS disconnected from the recoil buffer and the recuperator from
the cradle stirrup. By winch, the. barrel is pulled back on the rests
located on the trails and secured with a locking device and threaded ,
tie rods.
The cusioning mechanism is automatically engaged when the trails
.are drawn together.
In exceptional cases, as well as for short distances, it is permissible
to transport the gun without placing the barrel in traveling position;
however, in these cases speed must not exceed 5 km/hr.
At the firing position the barrel is changed from traveling position
to firing positiOn, for which the tie rods and the locking device are
released.
The barrel is pulled as far forward as possible with the winch and
then connected with the buffer piston rod. The recuperator rod is
connected with the cradle stirrup fitting.
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
rDeclassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
. Then, using the. jacks, 'the trails are taken off the, limber and .drawn. ?
apart as far as possible. At this time the suspension is. autOmatically '
disengaged..
The upper carriage traveling lock is removed from the seat in the 'bottom
carriage by:,lifting the handle of the lock andturning it' 90? to either .
side.
Det9ehable spades are attached to the rear trail assembly for firing
, under- summer conditions.
In the wintertime small depressions arc made in the frozen ground
into which wooden blocks 0.8 m in length are placed directly under
the winter spades.
The shells and charges arc selected in accordance with the firing
problem.
Firing is always performed with the muzzle brakes screwed on; how-
ever, if the muzzle brakes are damaged, firing may be performed with
the M47- gun, using charges 2 and 3, and with the M-46 gun, using 2, 3
and 4.
Generallnatructions on Diamantling and Assembling the Gun
,
In dismantling land.assembling a gun"the following, general. rules
?
:should. be followed
Ep 71
-
7 T/E tools, in good working order, should alwaysbe used. In
addition to these tools one should have a wooden 'or a lead hammer, a
'sledge hammer, a copper. strip, and a.set of:small..sticks. made of hard-
wood for cleaning .inaccessible places; '
.7 when removing cotter'pins, first bend -the. endstogether with pliers;
on 'replacement, bend them apart;
- removing or replacing.nuts make
and damage any. parts;' ?
,
sure the wrench does tot slip
?-? for' driving out conical pins use a copper drift-key;. the cylindrical.
pins should be driven' out . with a. punch whose diameter approximately
equal to that of the pin;
bolts should be driven out only with 4 copper drift-key;'
-. excessive- force: should not' be. used where not necessary;
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM.
be 'careful not-to.damage (scratch, nick) polished, 'ground, chrome-
plated, and bearing surface's, and do not allow sand; ,dirt, or other .
;foreign matter en. them; ?
r
? -..before.dibconnecting'and disassembly of the mcchaniSms,'their
??? operation should .be checked, and if they are in adjustment, the positions
should be noted to facilitate adjustment during reassembly;
- whO removing.a.mechanism.from the gun or a part from a mechanism,
attention should be paid to scribe marks; if there ?arc none, inscribe'.
them or mark the position. of the parts with a prick punch;.
- before Unscrewing parts unscrewthe locking screws;
- when removing dowels, mark their positions with a punch, and so
as not to damage their bent ends, place a screwdriver at an angle on the
non-working end, and/remove by lightly tapping the screwdriver;
- if a screw is locked by a prick-punch, place thc.blade of a screw-
driver into the thread and remove the prick-punch by lightly, tapping
on the side of the blade with a hammer; then remove the screw with the
screwdriver;
.- when bearings are removed,tie their races;
- place parts and. assemblies which have been disconnected and removed.,
from the gun on racks,or:tables; de not mix the parts with .those of._
other guns;
. ,
? - wipe 'off all parts before assemblingi.and grease.theM.if neceSsarY;
, - all phosphatized parts should be covered with:a thin coat of
grease;
replace bolts, screws, and nuts;
lock screws by prick-punching the thread;
replace gaskets and cerrectly'place and adjust the tearings;.
after assembly; .check operation of mechanisms;
.- replace grease ,during every disassembly;
?. The order of dismantling and aSsembling the gun is given in
. ? Chapter TWelve
E? T.3
.50X1-HUM.
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
The order of disassembling and assembling separate mechanisms is
included intheir descriptions.
4. Parts *Ambering System
The gun is made up of separate parts:, barrel breech, cradle, etc.
These separate parts make up the assembly units designated on
assembly drawings by the abbreviation "Sb"..
Each separate unit (assembly mit) has its own'number. For example,
the barrel is Sb01; the breech, Sb02; the buffer, Sb081 etc. A list of
the assemblies is given in Appendix 1 of this manual.
Every unit consists of separate sub-assemblies and parts which also
have numbers within the unit. For example, the breech ring (part 3)
' of the barrel belongs to the first assembly unit; hence, the complete.
part number of the breech ring is 01-3.
The striker cover (part 30) belongs to the second assembly unit;
thus, the complete part number'of the striker cover is 02-30, and so
.forth.
A detachable or nondetachable combination of parts of a unit is
called a subassembly. On the drawings these subassemblies are designated
by the number of the unit with letters "Sb" in front and the subassembly
number: for example, cocking lever - Sb02-4.
To make the use of this manual easier, the numbering system is
simplified as follows:
On the drawings and in captions (to the left of the name) parts are.
designated by arbitrary numbers; the part number is.shown in the caption
' after the name.
For example, in Figure 16 the striker cover is number 29; the
caption reads "29 - striker cover (02-30)", 02-30 being the part number.
Letters tare used to. designate elements of parts on drawings;
for example, "g - aperture for pinch bar (Figure 16)".
tj
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
. Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
? 50X1 -HUM
General purpose parts have their awn numbers,', For example, the
bolt denoted by number 99 in Figure 22 has number A51000-15.'
' Tools and.tccessories have assigned numbers in both'text and
illustrations.
, In correspondence with the supply unit2indicate the part number.
which is punched on each part(pxcept small parts. and. fastenings).
Parts and IlMts common to the M-46 and the M-47. are marked with'
number and index of the M-46.
? , When using 'this manual keepin'mind that position of parts(right,'
left,'frontIlback) is relative to direction of fire
Position of: the .Carriage wheels and limber (right or left) is
determined relative to direction of'movement of the gun in traveling
? position.. .
? Declassified in Part - Sanitized Copy Approved for Release 2013/09/24 : CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
CHAPTER TWO
BARREL AND BREECH
50X1-HUM
[1:1 9)
? There are two types of barrels for the 130-mm M-46 gun and the 152-mm
m-47 gun: the loose tube and the monobloc: The monobloc barrel has the
. word "Monobloc" stamped on the breech end.
5. 130-mm M-46 Gun Barrel With Loose Tube
The barrel serves to direct the flight of the shell, 'impart a rotary
motion to it, necessary for stability in flight, and to give the shell
the required muzzle velocity (depending on the charge).
The barrel (Fig 4a) consists of the following basic parts: the tube
5, jacket 3, the breech ring 1, fore 10 and aft 8 clamps, and the muzzle
brake 6.
The interior of, the barrel 5 (Figs. 4a, 5, and 6) has a rifled section
and a chamber. In the rifled section are forty grooves. of constant cur-
vature. The width of the grooves is 6 mm, depth is 2.7 mm, and the land
width is 24-. mm. The pitch of the rifling is 30 calibers.
The chamber has a main tapering conical section for the body of the
cartridge case, a more curved conical section for the tapering end of
the cartridge case, a cylindrical section for the mouth of the cartridge
case, and an adjoining conical section for the shell band.
On the outside.of.the breech end of the tube is a collar b. One side.
of the tube; with the collar, rests against jacket 3, and the other side .
rests againSt breech ring 1. This collar prevents axial displacement of
the tube. The tube is kept from turning by pin 11, set in a recess in
collar b. The pin is secured to the tube with screw 18.
The miZzle end of the tube has threads for screwing on the muzzle brake
and two holes c (Fig 6) for bolts 16 (Fig 4a) which hold the muzzle brake
on.
The, tube surfaces in contact with the jacket are polished and tapered
to allow the tube to fit better into the jacket.
On the,breech facearevi"oircular projection ar(FIg15).'..serving as 'the
stop.for the cartridge case flange,' two slots v to accomodate the extractOrs,
two slots' g for the guide clips of the extractors, and four mutually
?perpendicular grooves d which determine the position of the axis of the .
bore when checking the sighting devices with a graticule. Simi'
s,
I
designed for the same purpose, are also found on the muzzle face. --
tube.
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
0
Lo ? .
L
N.
Fig 4b. Monobloc Barrel
L. breech ring (05-2)
. sleeve (05-3)
>. monobloc (05-1)
7. forward clamp nut (05-8)
3. forward clamp (Sb 05-2)
/. after clamp nut (05-7)
0. after clamp (Sb 06-1)
3. after clamp slug (06-9)
33. check for 10-114 -(01-61)
4. check (05-4)
5. screw (A61060-16)
36. pin (05-5)
37. screw (05-6)
? I'
"37
38. forward clamp slug (06-10)
v. .catch
g. grooves for extractors
sv,
50X1-HUM
LW
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
LP 121
Jacket 3 (Figs 4a and:7), together with the tube,. absorbs the pressure
of the powder gases during firing. The tolerance (0.05-0.15 mm) between
the tube and jacket is taken up during firing.
The inside surface of the jacket has the sane angle of taper as the
tube surface over which it fits.
0
Fig 5. Breech End of Tube
11 - tube pin (01-5); a - circular projection for stop of cartridge
case flange; b - tube collar; v - slots for extractors; g -.slots for
extractor guide clips; d - grooves for attaching graticule necessary
for checking sighting devices.?
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
? Fig 6 Muzzle End of Tube
a - grooves for attaching graticule necessary for checking.sighting.
devices; e-recess for muzzle brake bolt.
Inside the breech end of the jacket is a circular groove to accomodate
tube collar b and slot zb for pin 11.
. On the outer Surface of-theAacket are: threads for screwing on the
breech ring, slot i for check 12 of the breech ring, grooves to acco-
modate the rear and front guide rings, threads for the guide ring screws
and two cylindrical recesses for slugs 13 which keep the rings from
turning on the jacket.
In the breech end of the jacket there are two slots o for [13 131
the extractors and a cut n for the extractor pin.
Breech ring 1 (Figs 4, 8, 9, and 10) is designed to hold the
components of the breech and also to connect the barrel to the buffer.
The forward end of the breech ring is screwed onto the jacket and
is kept from unscrewing by check 12 With setscrew 19.
- The breech ring has two plates (upper and lower) connected to each
other by crosspiece b. (Fig 8). The forward part of the breech ring
and the plates of the breech ring with the crosspiece form a recess for
the breech block.
50X1 -HUM
? Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
Fig 7. Jacket with Guide Rings
2 - rear ring cover (01-9); 3 - jacket (01-2); 4 - forward ring cover .
(01-16); 7 - forward ring nut (01-20); 8 -.forward ring (Sb01-3); 9 - rear
ring nut (01-19); .10 - rear ring (Sb01-2); 13 - ring slug (01-21); 17 -
guide (01-12); 21 - nut (A51011-7); 22 - grease cup. (72273-6); zh - groove;
i -.breech ring check groove; K, 1 - bolt recesses (recuperator shield);
m - aperture for lever; n - extractor rest;.0- extractor cutouts.
At the top of the breech ring, to the left and rear, is located a
small, ? flat area a (Fig 10) for the gunner's quadrant; in the forward
part is a depression t for the after cover of the recuperator and groove
u for the breech ring check; on the right is depression f far the locking
arm for opening and closing tie breech, aperture s for the extractor pin,
and next to ita threaded hole r for the setscrew of the extractor pin.
On the left and ,right sides of the breech ring are grooves i for the
clamps securing the barrel for traveling; in addition, there is an
aperture p on the right for the shaft of the breech.mechanist lever.
On the right side of the breech ring, secured with two screws, is
lever catch 26, which holds the breech block in. the closed position.
Also on the right side 'there are: a recess ch for the chain lug of
the winch with a groove. in it, a recess kh for the safety lock securing
the barrel for'traveling, a recess shch for the extractor pin safety
lock with spring, bevel k for facilitating the insertion of the breech
mechanism lever shaft into aperture p and the removal of the breech,
ouidk- UM
from the breech ring, and groove zh for the breech mechanism lever .
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Fig p. Breech
1. breech ring (01-3)
breech lug (01-22)
15. thrust lock (01-29)
27. guide (01-52)
28 lug slug (01-24)
29. Sprifig (01-27) ? .
. 30. breech block check (01-26)
31. cocking lever (01-35)
32. screw (A 51060-8)
14.
thrust coupling
tO
50X1 -HUM
C-0
27
:
Ring (left rear) and Thrust Coupling
A.
b.
V.
g.
d.
small flat area for gunner's quadrant
crosspiece
opening for screw of inertial safety device
notch for catch of inertial safety device
notch for securing breech block with inertial
safety device
e. recess for firing mechanism
a3z and ya. recesses
yu. notch
?
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
ape.M.....,???
(z)
50X1 -HUM
(152
Fig 9. Breech Ring (right rear)
14. breech lug (01-22)
23. lug bolts (01-23)
zh. cut for breech mechanism lever arm
i. groove for barrel securing clamps
k. bevel to facilitate installation of breech mechanism
level shaft
1. aperture for accommodating the thrust lock mechanism
m. recess for head of inertial safety device release
n. aperture to accommodate inertial safety device release
o. groove to accommodate breech operating cam of projectile
latch '
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
u (0 ? (3. ,7
fjir)
c..,4CT ???
(sirser)
?,?- 'IN ?
Fig 10. 'Breech Ring (right front)
26. lever catch (01-30)
a. small flat area for gunner's quadrant
g. notch for catch of inertial safety device
?zh. groove for breech mechanism lever arm
i. grooves for barrel securing clamps
k. bevel to facilitate installation of breech mechanism
lever shaft
p. aperture for breech mechanism lever shaft
r. threaded hole for screw of extractor pin safety lock
S. aperture for extractor pin
t. depression for after recuperator cover
u. groove for breech ring safety leek
f. depression for lock arm
kh. recess for safety lock (traveling position)
ch. recess for winch chain lug
sh. aperture for breech block safety lock
shch, recess for extractor pin safety lock
50X1-HUM
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7 ?
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
On the left side of the breech ring are: catch 31 (Fig 8), secured
with two screws, for uniting the breech ring with the cradle shield,
groove ye for the firing mechanism, a hole for screw 32 securing the
breech-operating cam of the projectile retainer to the breech ring,
groove o (Fig 9) under the cam (groove o is located on the forward [p 16]
side of the breech recess), hole v (Fig 8) for the screw of the inertial
safety device release, and notch d for securing the block with the.
inertial safety device.
On the lower 'left side of the after surface is a depression in
(Fig .9) under the head of the inertial safety device release and an
aperture n under the release.
Bronze guides 27 (Fig 8) are attached with screws to the lower part ?
of the breech ring, which lies on the cradle guides.
On each side of the lower surface of the breech block recess is a
shallow, tapered notch g (Fig 8) for the catch of the inertial safety
device: on the right, to protect the catch from damage while putting
the block in the breech ring; on the left, to secure the inertial safety
device in the depressed position.
At the bottom,the breech ring has a lug 14 (Figs 8 and 9) for
connecting the barrel with the buffer. Lug 14 is secured with six bolts
23 and two rods 28.
In the breech ring lug is a hole 1 (Fig 9) for thrust lock 15 (Figs
L. and 8), which comes up against the circular projection.
The nut of the buffer 'rod is connected to the thrust. lock by means
of two smooth segments and two round-ribbed segments - "club"-shaped-
which are on the nut as well as on the lock. The barrel is connected to,
or disconnected from, the buffer rod by turning the sliding lock 900 with
a special wrench.
In the breech lug there is also a vertical aperture sh (Fig 10)
opening onto the lower surface of the breech block recess.. In the
aperture is located breech block safety lock 30 (Fig 8) with spring 29.
These components, together with lock 15, comprise the interlocking
mechanism of the breech and buffer; this interlocking mechanism prevents
the breech from opening when the barrel is not completely joined to the
buffer. ?
For this purpose there are two grooves e and ya in the thrust lock
at right angles to each other into which spring 29 causes the head' of
-safety lock 30'to move. When the head moves into the shallow groove ya,
the block is. locked (traveling position); when the head moves into t1:50X1 -HUM
groove e, the block is unlocked (firing position).
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7 ?
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
There is a notch yu in the head of the safety lock for a screwdriver
to facilitate assembling and dismantling of the sliding connection.
There are guns in which gaskets have been placed between the bearing
surfaces of the lug and breech.ring. The gaskets are necessary in the
installation of the lug at the factory.f
There are also guns in 'which safety look 33 (Fig 4b) is secured with:
two bolts to the'top of the breech ring for locking the cover of the
breech ring..
After ring 10 and forward ring 8 (Figs, 14.a .and 7) fit onto the jacket.'
Nuts 9 and 7 prevent longitudinal moveMent of the rings, and slugs 13
prevent their turning.
The barrel, with its rings, lies on the directiOnal cradle guides, .
along with it recoils and returns. To lessen the friction of recoil and
return, bionze guides 17 are secured with screws to the barrel rings.
The upper parts of the rings and covers 2 and 4.form cylindrical [p 17]
openings tol4hich the 'recuperator is attached. The covers are secured
to the rings by means of pins 20 and nuts 21.
Below the covers on both rings are threaded holes: hole 1 con the
forward cIaMp) and hole k (on the after ring) for bolts securing the
reinforced jacket of the recuperator.
On the lower part of the rings are notches with openings in which
are placed grease cups 22 for lubricating the cradle guides and rings.
On.the lower Part of forward ring 8, above the guides, are two
openings m (one on each side) in which is placed a lever for turning
the barrel (on rollers) when .screwing on the breech ring.
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
? Fig 11. .Muzzle Brake'
16 7 bolt (01-16); a -mark for checking sighting arrangement; b - collar..
The muzzle brake (Figs 4 a and 11) is designed to assist .in
counteracting recoil.
? . Muzzle brake 6 is screwed onto tube 5 and is secured with two
bolts 16, which are kept tight by A wire.
The inside of the muzzle brake is machined. Its after selection is
threaded (left) for screwing onto the tube, and there are two guide
surfaces in front of and behind the threads for centering the brakes on
the tubc,and a circular shoulder for a stop in the muzzle face of the
barrel.
I,
The middle and forward interior sections of the muzzle brake form a
single cylindrical cavity whose diameter is larger than the diameter of
the outlet, with the result that a wall is formed, against which the
gases strike during firing. ?
The basic braking action results from the escape of the gases through
20 openings on each side.
The muzzle brake absorbs around 35% of the force of recoil.
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1 -HUM.
On the after end of the brake ts a collar b (rectangular in snape,
with beveled corners) with two threaded holes for lock bolts 16.,
On the forward face of the muzzle brake are mutually perpendicular
marks 'f or, mounting crosshairs to check the sighting arrangement.
6. Barrel of 152-mm M-47 Gun With Loose Tube
? The barrel of the 152-mm M-47 differs from that of the m-46 in only
two details: the loose tube and the nuzzle brake. In all other respects
the barrels of both guns are exactly the same.
The loose tubelof the M-47 differs from that of the m-46 in the
dimensions of the chamber and rifled section of the bore, the diameter
of the threads for securing the muzzle brake, and the outside diameters
of the barrel forward of the jacket.
The outside diameter of that section of the loose tube which is in
contact with the jacket is identical with the corresponding section of
the M-46.
The loose tube of the M-47 is 500 mm shorter than that of the m-46.
The rifled section has 48 grooves of constant twist with a pitch of
25_calibtrs.
The width of the. grooves is 5.97 mm, the depth is 1.5 ram and the
width of a land is 4 mm.
The muzzle brake of the M-47 differs from that of the m-46 only in
its dimensions. In construction the muzzle brake of the M-47 is like'
that of the m-46.
Monobloc Barrel
.The monobloc barrel (Fig 4b) consists of the following basic parts:.
monobloc 5, breech ring 1, sleeve 3 uniting the monobloc with the breech
ring, fore 8 and aft 10 rings, and muzzle brake 6 (Fig 4a) screwed onto
the muzzle and of the monobloc.
The interior construction of the monobloc is similar to the interior
construttion of the loose tube.
The exterior of the monobloc has three carefully machined surfaces:
one in the breech section for contact with the breech ring, and two in
the middle section for contact with the fore 8 and aft 10 rings
(Fig 44'
Tb monobloc has a circular collar extending from the breec15OX1-HUM
(external) which unites with the breech ring by means of a sleeve.
im Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24 : CIA-RDP80T00246A031200160001-7
50X1-HUM
Sleeve3-has a.lock-thread::whiCh screws into corresponding threads
on the breech ring, and its end forces the circular collar of the
monobloc into the recess'of the breech ring, in this way eliminating the. ,
possibility of axial displacement of the monoblcie relative to the breech
ring. Pin 36 in the breech ring serves to prevent the monobloc from.
turning.
.
On the breech face of the monobloc are two rectangular slots g in
which are-placed Upper 2 and lower 3 extractors (Fig 17) when the breech
block is closed.
, At the forward edge of the breech ring is a?slot in which safety lock
34 (Fig 4b) is inserted and secured with screw 33. The safety lock has
teeth which engage the teeth of sleeve 3, preventing the latter from
Unscrewing. ?
Fore 8 and aft.10 rings are slipped onto the monobloc. Nuts 7 and 9
:prevent them from longitudinal displacement, and rods 13 and 38 prevent
them from twisting.
7. Dismantling and Assembling of Barrel with Loose Tube
1. Remove the barrel with recuperator from the cradle, place it on
,a? trestle, and. disconnect the recuperator, as indicated in Capter 12.
2. Dismantle the breech piece by piece as indicated in Paragraph
10 of this chapter.
.?
3. Remove breech-operating cam 24 (Fig 4a). To do this, unscrew
screw 32 (Figure 8) and remove the cam from the slot in the breech ring.
4. Remove the muzzle brake. To do this: (13 19]
- remove the safety wire;?
- unscrew bolts 16 of. the muzzle brake (Fig 4a) With wrench A528304;
- place a bar in one of the side openings of the brake; then
striking the bar lightly with amallet, remove the brake by carefully
turning it in a clockwise direction (as one looks from the muzzle end of
the barrel, since the muzzle brake has a left-hand thread). It is .
necessary to support the muzzle brake while unscrewing it, so that its
weight will not damage the threads.
5. Unscrew the breech ring. To do this:
e screw 19 holding safety lock 12 of the breech ring;
50X1-HUM
Declassified in Part- SanitizedCopyApprovedforRelease2013/09/24 nIA-RnDszn-rnrs,
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
place 'a screwdriver against the upper edge of the safety lock
or the breech ring and, striking it lightly, remove the safety lock.
-.place the barrel on the trestle and, striking the upper left-hand
edge of/the:.brecch ring with the mallet (over a copper buffer strip),
remove (unscrew) it (the breech ring has a right-hand thread);
place the barrel on rollers Sb42-34;
- insert a line in the recess of the breech ring, secure the other
end to a crane or pulley, and tighten.
- turning the barrel on rollers Sb42-34 with bars placed in the
opening of the forward clamp, unscrew the breech ring.
If the breech ring unscrews with difficulty) adjust (decrease or .
increase) .171e tension on the line with a pulley and slowly turn the
barrel 1/4 to 1/2 turn in the opposite direction, after- which continue
unscrewing.
6. Remove the tube from the jacket. TO do this:
- raise.the barrel from the breech end by a pulley or crane, take the
after roller out from under it and put a.small trestle under the after
.clamp;
- raise the barrel from the muzzle end, put a small trestle under the .
forward clamp and, supporting the barrel with a pulley or crane; withdraw
the tube from the jacket by striking the muzzle face (over a copper buffer
strip) with ,a mallet. When the tube has been withdrawn from the jacket
about 500 mm, put rollers under the breech and muzzle ends of the barrel
and take out the trestles from under, the clamps. :Move the jacket to the
extreme forward position, after which put the forward roller under the
barrel aft Of the jacket and remove the jacket.
? 7. Remove screw 18 holding pin 11 on the tube and take out the pin.
8. Remove sliding lock 15 (Fig 8) from the breech ring. To do'
this:
with a screwdriver depress safety lock 30 on the breech block;
remove lock 15, safety lock 30, and spring 29.
It is forbidden to remove the fore and aft rings from the jacket
and breech lug 14 from the breech ring.
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24 : CIA-RDP80T00246A031200160001-7
50X1-HUM
Before the barrel is assembled, the common surfaces of the tube and.
jacket and the threaded junctions of the breech ring and muzzle brake must
be cleaned with, gasoline or dry kerosene, carefully dried, and covered with .
a uniform layer Of grease. Lubricating these parts with gun grease is
not allowed.
Assembling Barrel
1. Slip the jacket over tube 5 (Fig 4a). To do this:
- fix pin 11 on the tube and secure it with screw 18;
- place a wooden block in the chamber of the tube so that it . p 20]
protrudes 300 to 400 mm from the breech face; put rollers S1342-34 under
? the block and muzzle end of the tube at a distance approximately 2,.5 m
:from the muzzle end and slip the jacket over the tube until it comes to a
:stop on the forward roller;
- raise the forward end of the tube, put forward roller Sb42-34 under
. the muzzle face in order to ease the way for the jacket, and move the
?Jacket toward the breech face of the tilbe until it conies to a stop at the
.collar; while putting on the jacket, line up the pin slot on the jacket
. with the pin on the tube; the jacket may riot go in place because of the
'small clearance between it and the tube; final seating of the tube in the
'jacket is accomplished by screwing the breech ring onto the jacket;
- raise the after end of the tube and put after roller Sb42-34 under
the jacket and remove the block from the chamber of tie tube.
. 2. Screw onthe breech ring. To do this:
? pass a line through the breech block slot, secure the other end to
.a crane or pulley, and raise the breech ring and slip it onto the jacket
until it stops at the threads;
? - turning the barrel on rollers Sb42-34 with bars placed in the
:apertures of the forward clamp, screw on the breech ring; if the breech
ring goes on with difficulty, adjust (decrease or increase) the tension
on the line witha pulley and slowly turn the'barrel 1/4 to 1/2 turn in
the opposite direction, after which continue screwing on the breech ring.
Screw on the breech ring, until the slots on it and the 'jacket are
completely aligned (as far as safety lock 12). During the final three
turns it is permissible to strike the breech ring with a mallet, placing
a copper buffer Strip between the openings under the breech mechanism
lever pin and the extractor pin. ? 50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
3. Attach safety lock 12 to the breech ring and secure it itYr
19.
Attach breech-operating cam 24 (Fig lia) and secure it with screw
32 (Fig 8).
5. Fix lock 15 in the aperture of the breech ring lug. To do
this:
- on the breech ring,fix safety lock 30 with spring 29 attached to ,
it;
- With 'a screwdriver, push safety lock 30 down into the breech ring and
attach lock 15.
6. Attach the muzzle brake. To do this:
-put a bar In the side opening of the nuzzle brake; slip the latter
over.the tube, and,with the bar,screw it onuntil it stopsat the forward
end of the tube;
- put In bolts 16 of themuzzle, brake with wrench A52830-6 and lock
- with wire:
7. Assemble the breech as indicated in Paragraph 10.
8. Place the barrel on the Carriage as indicated in Chapter 12.
Dismantling of Monobloc Barrel
Disconnect the breech ring from the monobloc.. To do.this:
determine-the position of sleeve 3 relative to the breech ring.
(mark the sleeve and breech ring);
?
7 remove screw 35;
? knock out Safety lock 34 from its seat by prying it out with a
screwdriver back of Catch v; ?
? unscrew sleeve 3;
- supporting the breech..ring with a pulley), disconnect it from
the monobloc;
7 unscrew 37 and:remove pin 36.
?????
50*1-HUM.
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
Fig 12. Breechblock ][p 211
1 - bre7ch block (02-14A); 2 - upper extractor (02-34A); 3- lower
extractor (02-33A); 4 - slide pawl (02-5A); 5 - spring (02-19); 6.-c
spring catch (02-37); 7 - locking shaft (02-17); 8 - safety device for
premature firing (02-18); 9 - release (02-42A); 10 - spring (02-12);
11 - cocking lever (Sb9204); 12 - breech mechanism lever (Sb-02-2A);
13 - extractor cam (02-15); 14 - lever safety lock (02-7); 15 - spring
(02-12); 16 - cap (02-9); 17 - spring (02-8); 18 - extractor pin (02-35);
19 - extractor pin safety lock (02-11); 35 - screw (02-16); 36 -catch
(02-22); 37 - pivot (A51041-22); 38 - setscrew (A51064-4); 39 - screw
(02-44); a - bevel of safety device for permature firing; b - recess
under head of release of inertial safety device; v - lug on handle of
breech mechanism lever; d - notch for securing breech block with inertial
safety device; e - groove for slide pawl of breech mechanism lever; zh -
locking shaft cam.
Figure on next page]
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
?i/
. ?????,
50X1 -HUM
,
fo c? LH
r
?
;
J
1.?
--kwe?weft
w.4
n-
ers
/
?
- -?- ? ? ? -7
? : f . ?
:1?
3i 00Iqq0 a eag
2uTpaoaad eas)
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
,
Dec assified in Part- Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
The rest .of the dismantling of the monobloc-type barrel is carried
out in the manner described in Section 7.
Assembly is carried out.in the reverse order. Before assembling,
the condition of the threads on the breech ring and sleeve is checked.
This check is made by applying gauze, which will catch if there are
scratches or burrs. Any scratches or burrs must be removed. Cover
smooth and threaded contact surfaces of the monobloc, breech ring, and
sleeve with grease.
8. Breech
, The breech i8 designed to ensure that the bore is -securely closed,
firing takes place, and the empty cartridge case is extracted from the
'chamber.:
The breech is a horizontal, block-type, opening to the right, and
consists of the following mechanisms:
- closing;
- striker;
- ejecting;
- safety.
p 22]
? Closing Mechanism
The closing mechanism is designed to ensure that the bore is firmly
closed during firing.
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
;,1"17.11
Fig 13. Closing Mechanism
1 breech block (02-14A); it. slide pawl (02-5A); 14 - lever safety lock' .
(02-7); 16 - cap(02-9) 17 - spring (02-8); 37.- pivot (A61011-22); a - shaft
.of breech mechanism lever; b - handle of breech mechanism lever; V - lug -
on handle of breech mechanism lever; $ - groove for slide pawl of breech
mechanism lever.
The breech block is in the form of a tetrahedron with a depresSiOn
(tray) sh on the left to guide the projectile and cartridge case during
? loading and to guide the cartridge case during: extraction.
In the center of the forward surface of the block (in the block' face)
is an opening d for the firing pin.
0pposi6te this opening on the other. (after) side of the block is a
central recess for the striker, with mainspring, and the striker cover.
To guide the movement of the striker spindle during cocking and firingl[P 24]
recess f has :a longitudinal groove u and two projections t for joining
.the striker cover with the block.
On the after side there are also: a hole g on the right for a bar
to aid in removing the block during dismantling of the breech, a recess
kh on the lower left for the inertial safety device, and a slot ts for
the release of the inertial safety device if the release is retair50X1-HUM
the block when the breech is opened.
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
At the top and bottom of the block immediately at its forward surface
are located extractor cams, 13; which are pressed into the recess and
secured with screws 35.
On block along both Sides of the cams are notches for the
extractors; of these, notehea 1 are for the extractor bosses.
Also on the upper surface of the block are: groove s for slide pawl 4
of the breech mechanism lever, groove p for the safety device for pre-
'mature firing, 1A-regular notch m for the cocking lever, recess n for the
shaft of the cocking lever, recess o for the locking shaft, catch 36 for
fastening the siring which returns the locking shaft to its original
position after firing, and small flat areas r over which the breech,
mechanism lever is located during opening and closing of the breech
(areas r are loaated on the same level).
On the lower forward surface of loading tray sh is a notch ch with
rectangular opening e for the projectile retainer.
On the lower surface of the block are cylindrical recess i for
breech safety lock 30 (Fig 8) and notch zh (Fig 14) for the catch of
the inertial safety device.
On the right side of that edge of the block formed by its lower and
after surfaces is a notch k which allows the breech to open when the barrel
:1 is elevated to its maximum angle, in its extreme right,position (along with
trail).
Breech mechanism lever 12 with slide pawl (Figs 12 and 13) is designed
for the opening and closing of the breech.
It is in the form of a double-armed lever on one side of whose short
arm is welded shaft a (Fig 13) and on the other side is attached slide
pawl 4. Shaft a serves as a hinge joining the breech mechanism level
with the breech ring; and the slide pawl joins it with the block, in
groove s of,which it moves during opening and closing of the breech.
To handle 6, welded to the end of the long arm of the breech
mechanism lever, are attached lever safety lock 14, cap 16, spring 17,
and pivot 37.
Safety lock 14 has a lug 4 which engages catch 26 on the breech ring
(Fig 10) when spring 17 causes the breech to closel,preventing spon=
taneous opening of the breech.
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
13
P 35 36 p(r)
? .* ? 17:77' :t 1,71
I
:
(sit)
(ch)
.! ,
(.5) x(v-
qi(f) 11(u) in()
50X1 -HUM
13 - extractor cam (02-15); 35 - screw (02-16); 36 - catch (02-22);
.g - opening for pinch bar; d - opening for firing pin; e - opening for
projectile retainer; zh - notch for catch of inertial safety mechanism;
.1 - recess for block safety lock; k - notch; 1 notches for ejector bosses;
m - irregular notch for cocking lever; n - recess for shaft of cocking lever;
o - recess for locking shaft; p - groove for safety device for premature
firing; r - small, flat area; s - groove for slide paw]. of breech mechanism
lever; t - circular projections; u - longitudinal groove;'f - recess for
striker spindle; kh - recess for inertial safety device; ts - slot to prevent
failure of inertial safety release; ch .! notch for projectile retainer;
sh loading tray.
Fig 14. BreechblOck (bottom front and top. rear views) z-f27
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
Striker Mochanim
The striker mechanism is designed to bring about firing.
/
The component parts of the striker mechanism are located. in the
central and vertical recesses of the breech block.
The striker mechanism consists of striker spindle 30 (Figs 15 and 16),
intermediate cocking lever 27, spring 32, firing plunger 33, and pin 31,
constituting the assembled unit Sb02-5 (designation on the drawing is
"Striker Mechanism"); also main spring 28, striker cover 29, locking shaft 7
(Fig. 12), cocking lever 11, and spring 5. Ep 25]
The forward part of striker spindle 30 (Fig 15) - the firing pin - is
designed to deliver a blow on the primer cap of the cartridge case. At
the top of the cylindrical after part of the striker spindle is an
irregular horizontal notch a with a recess for intermediate cocking lever
27, and inside are recesses for firing plunger 33 (Fig 16) with spring 32
and main spring 28 (Fig 15).
In addition, there is a vertical opening under pin 31 in the striker
spindle (Fig 16). Pin 31 has a flat head which fits in a longitudinal
groove u in the central opening of the breech block (Fig 14) and ensures
that the striket.spindle cocks and fires properly.
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
?
a. 27
30
(L)
50X1-HUM
-;
Fig 15. Striker Mechanism
5 spring '(02-19), 6 , catch (02-37), 7 - locking shaft (02-17), 11 ?
cocking lever (Sb02-1)', 27 - intermediate cocking lever'(02-21), 28 -
,main spring (02-29), 29 - striker cover (02-30), 30 - striker spindle
(02-27A), irregular notch for rotation of intermediate cocking lever
and lower cam of locking arm for engaging safety device, ye - shaft of
cocking lever, zh locking, shaft cam, i - cam boss for cocking'striker
spindle after firing, k - cam boss for cocking striker spindle.
Main spring 28 (Fig 15) is designed to impart a sharp motion to the
striker spindle, causing it to strike the primer cap. The main spring is
compressed between striker spindle 30 and striker cover 29.
Striker cover 29 covers the central recess in, the breech block. It
is secured in the breech block by means of a thrust coupling.
Intermediate cocking lever 27, locking shaft 7, and cocking lever 11
serve to cock and fire the striker spindle.
00 Intermediate cocking lever 27 is held in place by firing plunger 33,.
acting on spring 32 (Fig 16). The lever rotates about its axis, causing
the locking shaft to assume its original position.
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1 -HUM
Fig 16. ?Breechblock [p 26]
5 - push rod (Sb09-30); 20 - spring (02-39); 21 - firing plunger (02'-40);
22 - retainer pin (02-41); 23 - spring (02-12);'-24 - inertial safety
device (02-31); 25 - spring (0226); 26'- safety catch (02-32); 27 -
intermediate cocking lever (02-24); 28 - main spring (02-29); 29 - striker
'cover (02-30); 30 - striker spindle (02-27A); 31 - cotter pin (92-28);
32 - spring (02-26),; 33 - firing plunger (02-25); 34 - projectile retainer
' (02-38A); g - opening for pinch bar; d - opening for removal of firing pin;.
- cam boss for extricting striker spindle after firing; k - cam boss for
'cocking 'striker spindle; m.- irregular notch .for cocking lever; shch -
loading tray; ts - notch in breech ring for securitg biotic with inertial
safety device; y - notch for inertial safety catch.
UU - interial safety device engaged; VV inertial safety device disengaged;
WW - striker mechanism (cross section); XX - initial position; YY 7 striker
spindle cocked; ZZ - striker spindle fired.
.[Figure on neat page]
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1 -HUM
4 ,
... ?
-- ? cf--..; 1.? -4 ?17----1,_?..., ! r-s ...,
--
-1
(........?Zru ;?i;-.
!
L., -:..? 'c...: - , .. j
J.7.
t.,1 . 7-- t...? : - ....? ?
.. tZ:1 ;..-..- r?....4?. 1 :. ;,...' ..?,
L. ?..: - I.
Ctl'":%i".. ..-i-..., '...:i Z
1
.1 I ....., :;" - ; ' 7 ' ? ? - - . ?zs, 1`...) ? i---"*---?
' Ar: ? .--t 1 1 :t.:-.!
11 ' 1 ?
I 18P1:71 116n51 b41 h31 h:1111 tlorl.91 15r171 1,5r151 14n31 12r/; in 11 1E1 = 0 0o.
11N U1I NI 101 ml 1P1 ICI III Iy1 14 1311p
a u e u, U. 4.41 ct ct In el
Fig 90. Example of the Alignment of the Special Scale.of the.
Dial (Panoramic) Sight Graticule with the Graticule
:of the Collimator
(162.j
50X1 -HUM
r.
; Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
1. In order to reference the dial sight of the weapon to the colli- 50X1 -HUM
mator, turn the sighting head of the dial sight and operate the reflecting
mirror so as to align the vertical lines of the collimator graticule which
are visible through the dial sight with the corresponding lines on the
special scale of the dial sight graticule: that is, the lines designated (163),
by the same letters or numbers as on the collimator.
Figure 90 shows how to align the lines of the collimator graticule
with those of the dial sight graticule. In this figure the collimator,
which has been placed approximately 4 m from the dial sight (six zones
of the collimator graticule are visible), is seen in the field of view
of the dial sight.
'After referencing to the collimator, record the azimuth obtained.
2. In order to lay the weapon after changing the azimuth setting
or to restore the original setting after firing, lay the cross hairs of
the dial sight on the collimator while looking through the' dial sight
and operating the training mechanism and the reflecting mirror of the
dial sight, and align the visible vertical lines of the collimator
graticule with the same lines on the special scale of the dial sight
graticule.
3. .In order to provide good visibility of the collimator graticule
during firing, the outer lens of the collimator objective system should
be wiped clean periodically (to remove dirt and moisture from the glass).
Care of th Collimator
In caring for the collimator it is necessary to abide by the follow--
ing basic rules:'.
?
-- in inclement weather the collimator should be covered with a
hood during breaks in firing (figure 91);
-- the collimator is transported and stored in the carrying case
only' (figure 92); during transport, it should be protected against shocks
and. vibration;
-- set up.and dismantle the collimator carefully, without subjecting.
it to shocks;
-- always keep the collimator clean. If the collimator is used in
rain or snow, the outer metal parts should be wiped dry with a clean rag
before it is stored in the case. The outer surfaces of the optical parts
of the collimator should be dried with clean flannel (a linen rag), the
collimator having first been shaken to remove dust and sand.
Dust and sand should be removed from the. optical parts with a small
brush or by blowing.
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
The optical part b should be cleaned with flannel, using a circular
motion from the center to the edges.
1
Figure: 91. Gun Collimator on Tripod, Covered With Hood
Touc'nink, the opticd.1 parts with the fingers or an oily or dirty rag
is forbidden, since the slightest oil spots will ruin the polished surface (1610.
of the glass and result in poor image quality.
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
.Figure 92. Gun Collimator in Carrying Case:
50X1 -HUM
(1642
A - collimator; B carrying case; C - place for storing spare bulbs;
32 - mirror; 35 - Plug; 36 - electrical conductor; 54 - ball joint;
. 59 - lens hood; 62 - flannel; 63 - spare mirror.
50X1 -HUM
Declassified in Part- Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
52. Optical Sight 0P-4-35 (0-4-96)
50X1-HUM
Purpose and Basic Data on the Sight.
Optical sight OP-4-35 is intended for use with direct fire and
has the following optical and design characteristics:
Magnification 5 52c
? Field of View 11?
Diameter of EXit Pupil 5.5 ram
Distance Between Exit Pupil and Last Lens of
mm
Eyepiece 24.5
? Maximum Adjustment of Sight:
in range + 10 divisions
of fixed scale
.in height i 10 divisions.
of fixed scale
Construction of. the sight
. The OP-4-35 sight (figure 93) consists of the following basic
parts: .tube, tangent elevation mechanism, height adjustment and
range adjustment mechanisms, eyepiece with' rubber eye shade, rubber
forehead piece, and. light filter.
31-
s 23 fit 32 29 '
, 23
/13
If..
Figure 93. Over all View of Sight 0P-4-35:
1 - tube; 11 -. handwheel of tangent elevation mechanism; 15 - key;
18 - bracket illuminating bulb holder; 23 - cover; 24 - screw;
28 - rubber eye shade; 29 - rubber forehead piece; 30 - screw for
attaching forehead piece; 31 forehead piece bracket; 32 - forehead
piece shaft; 33 - light filter; 41 - screw; 43 - cover. 50X1-HUM
- Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
An optical diagram of the sight is shown in figure 94.
50X1-HUM fl
?
The following optical parts of the sight are fixed in tube 1
(figure 95): objective lens 2, condensor 3: and erecting lenses 4 and
5. The objective lens, which consists of two lenses cemented together,
provides a reduced and reversed image of observed objects in its focal
plane (that is, the top of the object is at the bottom, the right side
is toward the left, etc.). The condensor concentrates the light rays
along the optical axis, as a result of which the diameter of the parts
behind the condensor is reduced in size and the dimensions of the sight
have been decreased.
The erecting lenses, consisting of three lenses each; reverse
the image made by the objective lens. After the light rays have passed
through these lenses; an erect image of the observed object is pro-
duced in the focal plane of the eyepiece.
"i3 2
3
5
Figure 94. Optical Diagram of the Sight:
2 - objective lenses; 3 - condensor; 4 - first erecting lens;
.5 - second erecting lens; 8 - plane-parallel glass plate; 27 - eye-
-piece; 33 - light filter; 38 - protective glass for illumination of
sight scales.
The tangent elevation mechanism consists of the following basic
parts: housing 6: carriage 7 with plane-pararel glass plate 8:
screw 9, spring 10 (fig. 98) of handwheel 11 (fig. 95) with nut 12,
and carriage 13 with horizontal cross-hair.
Range scales and laying marks (symbols) in the form of inverted
V narks and vertical lines are inscribed on plane-parallel glass plate
8. The plate is placed in the focal plane of the eyepiece.
Housing 6 is attached to tube ?J. by means of a threaded connection [167]
and screws 14. Key 15, attached to the cylindrical part of the
housing, is used to fix the sight in the bracket on the weapon.
The tangent elevation is pet by moving the carriage with the
plane-parallel glass plate upward or downward relative to the hori-
zontal crOss-hAir.
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24 : CIA-RDP80T00246A031200160001-7
ininH-1.X09
Fig 95. Cross-Section of Sight
n662:
70
7
3 14
--.-_----
.1' 1 f(
i 1.
i
*--1-1 ..k? ...11,-- .----1
, ? 1 I ; .
i? ? ? ! i . .. : -.---?-...1 ?......,41,. i _...-,,
.1?26,..\,..?__..1,---4------ ,-------=-.........._...; ;i ............ 3.....____4;
36 15
1. tube
2. objective system
3. condenser
4. first erecting lens
-5. second erecting lens
6. housing of tangent
elevation mechanism
7. carriage of plane-
parallel glass plate
8? plane-parellel plate
9. screw of tanget elevation
mechanism
11. handwheel of tangent
elevation mechanism
12. nut
:
?41 ?,._t_....t_., ? ,,,A .
111.1..,:, .7-,e. r1:73--,----r------NttiW:':,1
;'-'77.'U tc.-------_,--i-T
.L.rt.:_)---t:- 22 27 -- I.
9
13. carriage with
horizontal
cross-hair
14. screws
15:' key
16. stop washers
17. screws
20. nut of height
adjustment
mechanism
22. spring of
height adjust-
ment mechanism
'
?
'14
,
5
zt
t ?
z
_
27. eyepiece
28. rubber eye shade
33. light filter
36. groove in key
inn
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
The tangent elevation mechanism operates as follows:,
Rotation of handwheel 11 causes rotation of nut 12 which roves
-screw 9 upward or downward.
50X1-HUM /Th
? When handwheel .1l is rotated in one direction, screw 9 descends
(is unscrewed from the threads of nut 12) and its L-shaped end pulls
down on the catch of carriage 7 with the plane-parallel glass plate 8,
compressing spring 10 at the same time (figure 98); when the handwheel
is rotated in the opposite direction, screw 9 rises and carriage .7 with.
the plane-paralleI glass plate is moved upward.
? Spring 10 (figure 98) constantly applies tension on carriage 7
and takes up the free play between screw 9 (figure 95) and nut 12.
When the carriage with the plane-parallel glass plate is moved.
downward, the angle of elevation is increased; and when it is moved.
upward, the angle of elevation is decreased.
Six stop washers 16, linked to each other by projections on
their outer surfaces, are set on nut 12 to restrict the movement of
the carriage with the plane-parallel glass plate to the limits of
the tangent elevation scales. These washers serve to limit the rotation
of nut 12 and, consequently, handwheel 11 to six turns.
41
If the limiting motion of handwheel 11 is not correct (for
example, if the zero divisions of the range scales do not reach the
horizontal cross-hair), then screws 17 should be loosened and the
handwheel turned to the necessary position; in this case washers 16
will not turn. After this, screws 17 are tightened.
On the top of housing 6 is a bracket 18 (figure 93) with lugs
having a dovetail cross-section; the lugs are designed to hold a lamp
holder and electric bulb for illumination of the range scales and
laying narks. The illumination system used with the given weapon
serves for illumination of the sight scales.
The hei&t and range adjustment mechanisms are used to Rlign
the zero line of sight with the axis of the gun barrel.
The carriage with the horizontal cross-hair is moved upward or
downward by means of the height adjustment mechanism, while the
carriage with the glass plate is moved to the left or right by means
of the range adjustment mechanism.
The height adjustment mechanism is situated on the top part of*
.housing 6 (figure 95) as one looks at the sight when it is in firing
:position'. The range adjustment mechanism is located on the left side
of housing 6. 50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24 : CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Both mechanisms are identical in construction and, therefc5oxi -HUM
only the height adjustment mechanism will be described below.
The height adjustment mechanism consists of the following basic
parts: housing 9 (figure 96), nut 20, adjusting screw 21, and
spring 22 (figure 97).
The housing of the adjustment mechanism, which is screwed onto
the housing of the tangent elevation mechanism, has a cover 23
(figure 96) which is held by screw 24.
When Screw 24 is loosened, cover 23 is pushed upward by the
force of spring 25 and comes out of the cylindrical guide of housing
19. When in this position, cover 23 may be turned to the side and
the height of the sight may be adjusted by turning nut 20 with a
screwdriver.
. When nut 20 of the height adjustment mechanism is turned in one ?
direction, screw 21 descends (is unscrewed from the threads of nut 20)
and, by means of its L-shaped end, pulls the catch of the carriage
Hwith the horizontal cross-hair downward and compresses spring 22
(figure 97). When nut 20 is turned in the opposite direction, screw
21 is raised and the carriage is moved upward. Spring 22 takes up the.
: free play between screw 21 and nut 20.
When the nut (figure 93) of the range adjustment mechanism is.
' turned, carriage 26 (figure 98), on which is fastened carriage 7
with the plane-parallel glass plate, is moved to the right or the?
left.
? Eyepiece 27 (figures 94 and 95) is used to view the image which
his formed by the objective lenses at a wide angle (as through a
magnifying glass); therefore, the observer sees a magnified image of
the object:.
The eyepiece consists of 'a mount and six 'lenses, cemented together
in pairs, placed in the mount. The eyepiece mount is screwed into
the housing of the tangent elevation mechanism and is held by screws.
rubber eye. shade 28 (figure 93) is fastened to the rear part of the
housing of the tangent elevation mechanism for convenience in observing
; through the eyepiece.
50X1 -HUM
ta.68)
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Fig. 96. Height Adjustment
.Mechanism:
19 - housing; 20 -.nut; 21 -
adjusting screw; 23 7 cover;
24 - screw; 25 - spring.?
Fig. 97. Housing With
Cross-Hair Carriage:
13 - carriage; 22 -
spring; 4o - cross-hair.
50X1-H UM
L168
Fig- 98. Carriages
of Sight Scales:'
7 - carriage with
plane-parsllel glass
plate; 10 spring;
26 - range adjustment
carriage; 39 - base
.of carriages.
The rubber forehead piece 29 (figure 93) provides convenience in
operating the sight by the pointer.
The forehead piece is attached by screw 30 to the guide of bracket
31. The forehead piece may be moved along the axis of the sight in order
to slign the plane of the output pupil of the sight with the eye of the
? pointer.
The position of the forehead piece along the axis of the sight [169]
may be read from the scale on shaft 32 of the forehead piece. If the pointer
already recorded this position on the scale, he may rapidly set the
forehead piece in the required position if the setting has been changed.
Light filter 33 (figures 93 and 94) is a metal ring holding a
smoked glass plate. The light filter is set in the tube of the sight
(in front of the objective) when laying the gun in the direction of the
sun or on a brightly illuminated target.
The sight scale. .In the field of view of the sight are the
range scales and laying Marks inscribed on a plane-parallel glass plate
(figure 99). In addition, a stationary horizontal cross-hair (reader) 50X1-HUM
may be seen in the.field of view.
, Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
The range scales located on the upper part of the plane -Pa350X1-HUM
glass plate are drawn in accordance with the ballistics of the weapon
for which the sight was designed and are designated by letters corre-
sponding to the types of sheels used in the given weapon. The divisions
on the scales are marked by numbers corresponding to ranges in hecto-
meters (hundreds of meters). Belay the range scales are the laying
nnrks drawn in the form of inverted 'V's and short vertical lines. The
large central V serves for sighting without consideration for side
corrections, while the side V's and vertical lines are used when
sighting with consideration for side corrections.
The distance between the peaks of adjacent V's corresponds to
eight divisions of the main scale, and the vertical lines (one large
and two small) divide this distance into four equal parts representing
two divisions on the main scale.
The laying marks, located on both sides of the large central V,
make it possible to determine side corrections for up to 24 divisions
of the main scale to the right and left.
The vertical line drawn downward from the top of the central V
, is intended to facilitate locating the central V and to permit the
layer to more easily detect a lateral inclination of the weapon.
Between the top of the central V and the beginning of the vertical
line is a gap equal to two divisions on the main scale. This gap may
be used as a scale for determining the range to the target if the height
' of the target is known.
. The distances between the short lines on the side correction
scale may also be used to determine accurately the range to the
target if the length of the target is known.
The scales of sights OP-4-35 for the 130-mm 14,-46 gun and OP-4-96
for the 152-mm M-47 gun are shown in figure 99.
Sight OP-4-35 has three range scales. To the left is the scale
for armor-piercing sheds, designated by the letters BR; the divisions
are from 0 to 40,.
The value of each division on the BR scale (420oo m) is 200 in.
. To the right is the scale for high-explosive fragmentation
sheds with reduced charge, designated by 0E-4; the scale has divisions
from 0 to 31. The value of each division on the scale (3,100 m) is
100 mi.
To the left of the OF-4.scale is a scale for .high-explosive
fragmentation shells with fill charge, designated by the letters50X1-HUM.
the scale has divisions. from 0 to 80. ru"
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
bp .0(1)- 4
A IAI.AI.,'JSA OF4.4.
Z4 W d 16 24
Fig 99. Scales of Sights
(0P-4-35 Sight)
50X1-HUM
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
_
60-
=58
55= .
-
40-
1:-18 52_77-54 16-
=34 48- -14
44 2
- 12
_
-30 4?.42 -
287. 36.1.-38
24-7 32
-26 4-34 -la
2___-, 30
.7- -22 6_ = 26 8-
20- q-22 --.- 22
=18 20-:-.. -6
16-= 16-=18
12 -: .2-14
8 -
r-10 8- ...2
4 -=' 6
-2
OF. 0 -:-.72 0-
.5P 15t1.777 hg.rg 0 cr' -3 .
-A' ' 'A' ' 'A' 'A I 'A' ' 'A' I 'A ': OF-37
24 16 8 / N 8 16 24
Fig 99. part 2) Scales of Sights
(OP-4-96 Sight)
-*"11
50X1-HUM
- Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
The value of the divisions on the OF scale are:
YOLN
-- from 0. to :40 (4,000 m) = 200 in;
-- from 40 to 80 (8,000 . 100 in.
Sight 0P-4-96 has three range scales whose designations and
divisions are shown in figure 99.
Attaching the sight to the Weapon
Bracket I (figure 100) and collar 3 are designed for holding
sight 0P-4-35 (0P-4-96) on the gun; the bracket is rigidly welded
to the cradle of the gun (two bolts 2 are screwed into the bracket
at the factory for accessory purposes).
Collar 3 is fastened to bracket 1 with four bolts 5 and two
pins 6.
50X1-HUM fl
? A longitudinal opening with a key-way at the bottom is used to
hold the sight in collar 3. A key attached to the tube of the sight [171]
is inserted into the keyway and prevents the sight from turning on the
collar. '
At the bottom of collar 3 (below the keyway) is a laminated spring
(attached by two screws 4) which engages a groove in the key of the
sight and holds the sight securely in the bracket; screws 4 are locked
with vire.
Final attachment of the sight in the collar is made with thumb,
screws:10 which hold the sight by clamp jaws and. thus fasten the sight
tO the Collar. Cotter pins are placed in the ends of the thumbscrews
to prevent them from becoming lost.
Mounting and Removal of the Sight
Before Mounting the sight on the weapon it is necessary to make
'sure that the opening in collar 3 (figure 100) of bracket 1 (where
the sight is seated) is clean If the opening is dirty, it should be
wiped out with a clean rag. Take care that the sight is not damaged
when mounting it on the weapon..
? In order to mOunt and fasten the sight in the bracket it is
necessary to:
[173]
open the clamp jaws of the sight collar, having first loosened
the thumbscrews 10; 50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7 -
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
,
?-??.
????? rs.1
0
ti
? ...
----- r3.72_/:
._,
,
0 I .:-..i.c ? ? 50X1-HUM
?1: C ?
0 i ??'_:, I :?. CV r---?
? ? r i r...
4.' ('J(
cvfil \?8 \A te Er c'\
.., ri 0 ......,-i ...... cp.,
r'' $.4 ? .1 CD
..c. 0 c- O11'11 p- c .---? .0
0 4-) ON C.) -a; r-i tti ?ri CV CO
H.......? I P.0 ???
.4-) to I I 0 I c\J
4::' ?1-.) c\'..0 0 I I tis:
?z; ...C. 0 In C.) C V- ON. (ll
tIO s--' $.4 H COO f-t
? ?rf ? ., C.J tr \ ? n ???????* C)
0 (r) 4-1 ?-?-? (r) ..- i--? ??? u)
0. a.) 1.1'N ........ me-. t..1.0
ri C\.! ...Y. c\.t I ' cr\ It\ p;
I Ci I -ez? I I ?1-!
? 1-1.4 ct 0 .._.-I r-I r-i l's- F.., -c
tt) 0 ;-I 0 0 ..,..7P 0 t c.',..4.
r?--4 H' t-, r-4 I
I .1.11 CO I It NV\ I
-.7.' 0. ?,-1: '',4 0
r-4 ...... :-.4 lA?'?, 0\ ri
r"
?
50X1-kum
Declassified in Part- Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
insert the sight (objective toward the front) in the opening 50X1-HUM?
of the collar on the bracket so that the key of the sight enters the -
keyway and pin 8,of spring 9 engages the groove in the keir of the
tight; '
-- tighten thumbscrews 10.
In order to remove the sight from the gun it is necessary to
loosen thumbscrews 10; this 'will make it possible to free the sight
from the clamp jaws of the sight collar.
Then, with the left hand, press spring 9 so that is pin releases
the key on the tube of the sight, and, with the right hand, remove
the sight (pushing it carefully) from the collar, of the bracket. Place
the sight in a carrying case (figure 101), which is then locked with.
hasps.
Figure 101. Carrying Case With Sight in Place.
Operating With the sight
When laying the weapon during direct fire, it As necessary to
lay the weapon on the target and to set the angle of elevation on
the t-'.gbt according to the corresponding range 'scale, depending on
the ange to the target and the shell to be used.
C1731
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
The angles of elevation are set by means of the tangent 50X1-HUM
mechanism handwheel, which moves the range scales into the field of
view relative to the horizontal cross-hair. When laying the weapon
during direct fire at a stationary target, it is necessary to perform
the operations outlined in Paragraph 73.
When laying the 'weapon in the direction of the sun or against
' brightly illuminated targets, place the light filter on the tube of
the sight (at the end with the objective lenses).
When fire is directed against lighted targets at dusk or night,
illumination for the scales of the sight should be turned on. When
necessary, sight OP-2 may be used to measure horizontal and vertical
angles and to determine the range to the target (approximately).
Measuring horizontal angles. The scale of side corrections is
; used when measuring horizontal angles.
In order to measure an angle (of not more than 24 divisions on
the main scale) between two objects, the following steps should be
performed.:
-- by operating the training and pointing mechanisms of the
weapon, lay the peak of the central inverted V on one of the objects;
-- count the number of whole divisions (small) on the scale of
side corrections from the central V to the second object; if the
second object is located between two lines, the percentage of the
division should be estimated by eye;
-- multiply the total number of whole divisions (=All) by 0.02
and add the estimated percentage. to the result.
For .cases in which the angle between the objects does not fall
between the central and extreme V's but does not exceed 48 divisions
of the main scale, one of the extreme V's should be layed on one of
the objects. If the angle between the objects is greater than 48
divisions of the main scale, the'angle should be measured in parts
by training the gun.
Measuring vertical angles. When measuring vertical angles, the
layer should use the distance (gap) between the top of the central
inverted V and the beginning of the vertical line, or one of the
divisions of the range scales, the value of which in divisions of the
main scale must be determined beforehand. In order to measure an angle
using the size of the space between the top of the central' V and the
beginning of the vertical line, it is necessary to proceed as follows:
(1741 .
by. operating the training and pointing mechanisms of the gun, .
determine the number of times that the gap between the top of the V and
the beginning of the. vertical line may be layed out between the two 50X1-HUM
objects subtending the angle being measured.;
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
.-- multiply this number by 0.02 (the value of the angle cor-
responding to the distance between the top of the central inverted V
and the beginning of the 'vertical line).
, Determining range. The range to the target may be determined
with the aid of the sight scales if a dimension of the target (height
or length) is known.
In determining range:
lay the sight on the target (object), whose dimensions are
known, and determine the angle subtended by it;
-- divide the length of the target (in meters) by the value of
the angle (in thousandths) subtended by it, and multiply the quotient
by 1,000. The result is the range to the target.
&le': A tank moving along a front subtends an angle of 0.04.
Determine the range to the tank if the tank is 5 m long.
Solution: The range to the tank equals
5 . 1,000 - 1,250 m.
4
Care of the OP-4-35 (0P-4-96) sight
The following basic rules should be followed in caring for the
sight:
1. The sight is not removed from the gun under combat conditions.
This is necessary in order that the gun always be ready for direct
firing. When moving, as well as during breaks in firing in bad weather,
the sight must be covered with a hood.
[1753
(Th
2. When moving the tun over long distances under combat or peace-
time coaditions,as well as in cases where the gun is stored in an
artillery park, the sight must be removed from the gun'and transported
or stored in the, carrying case.
3. In mounting the sight on the gun and removing it, care should
.be Observed that the sight does. not strike metal objects.
4. Do not Use great force when
tangent elevation mechanism. If the
maximum limits, the stop washers for
should be reset, as described in the
operating the handwheel of the
range scales do not move to their
the tangent elevation handwheel
section 'Operating With the Sight."
5. The housings of the height and range adjustment mechanisms under
covers 23 and 43 (figures 93 and 96) must always be packed up to their
edges with AP-70 grease, which protects the sight from moisture penetration
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
paWSSepaa
in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
7t11-15-m- ati on f
optical_ si_9 Ni
?
na
Ck'Sr te ur P. a :1 4.:110...11717
Ocfetar...r:e nrrertpecmul
ati ? __fe_r_t?
:nZirauth cr os s s
I
,v..13.uminati on for r-anrre drum
land lon gi P1 1 e vol.
,
_
?
.
=..
0,7e,n.littfue aucmcm:pc,V3 i .s?-?-'
. ,.....,-- \ ???
u npc,?ontmwo . ?......_ _ .1
ypotjhR , --7,17--
. '1',e
' ......--
?, ?.,4-
-
?
t
borage battery,
,
J
? :7:1"
"2 1.2:11
?
t - - - ?
?
'-'%"''' " . .' ?
..---=.1.!
-
11-7...piir: .._.. ? 1,.
.. ? . ? : :._f. -
-
.--..-v,:t..,--- - ----- ------- -.---- --.?-?;:'
`..- -.... ,i1.3.u.__ ra. in at).,. on ?..,. ;.o_ ,
O.:X.-OS-S.- I e.vP1 vr_d:
`1.. ten gent elevation.:
rfelio- us anath s s ce-1- e',
r
to bulb -s-o?clz;s?-1
iUuinatiiw optical
Fig 102. Arrangement of LUCh-S71M Illuminator for Sight Attachments
1. socket 2. switch 3. plug 4.. socket 5. socket holder (176j
010 01
0
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
through. these mechanisms. Where AF-70 grease is not available, .the50X1 -HUM
housings of the,adjustment mechanisms should be packed with gun grease.
6.?'Me 1-!e cl=.an at a:: tie..
Llt! s= aze Ct in snow or rain or if they are
being moved over dusty roads, the outer metal parts of the sight should
be wiped with a Clean rag at the earliest possible moment.
The outer optical parts of the sight should be wiped with clean
flannel (or a clean linen rag if flannel is not available), the sight
having first been shaken to remove dust And sand; sand and dust should
? be removed (by blowing or with a small brush) before the glass is wiped
with a cloth.
The glass should be wiped with tht flannel, using a circular
motion of the hand from the center to the edges. Touching the optical
parts with the fingers or with oily or dirty rags is forbidden, since
the presence of even the slightest oily spots will damage the polished
surface of the glass and worsen the quality of the image formed by the
sight.
f:
53. Illuminating Instrument LUCh-S71M
Instrument 4UCh-S71M (figure 102) is designed for illumination of
the sights and gun dial sight when firing at dusk or at night, as
well as for the illumination of those points, which must be visible to
the gun captain and the fuse-setter.
Instrumentsj,UCh-S71M consists of four storage batteries and
attachments for illuminating the mechanical sight, the optical space
sight and dial sight, the gun collimator, attachments for illuminating
the operating areas of the gun captain and fuse-setter, and a case for
storing the instrument.
The storage battery, which supplies 3.5 volts to the bulbs (flash-
light-type bulbs):, consists of two series-connected type NkN-10 alkaline
elements placed in a metal box with a cover.
On the rear wall of the box is a spring clip whichis intended
for hooking onto a belt, and at the side walls are buttons for attachment
Of the box to a shoulder harness.
Attached to the cover of the battery box is socket 1 to which plug
-3 of the illuminating instrument is connected. Switch 2 is next to the
socket.
Two wires pass from the terminals of the battery. One wire is
connected to the :contact of socket 1 and the other to the contact of
switcI 2. The second contact of switch 2 is connected to the second
-Onto t of socket 1.
[p 177]
50X1-HUM
1)p:cl2ssified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24 : CIA-RDP80T00246A031200160001-7
The battery used for illumination of the mechanical, OptiCalsdw
kil_i Du;
dial sights is attached to the shield of the weapon; the battery "'"v!
for illuminating the graticule of the collimator is fastened to the
collimator tripod; the two other storage batteries are worn by the gun
captain and the-fuze-setter.
The attachment for illuminating the mechanical, optical and dial
sights consists of an electrical conductor split into five divergent
branches.
,On the end of the undivided part of the conductor is a plug 3 for
connection to, socket 1 of the storage. battery.
The branched part of the conductor consists of five two-wire
terminals which are connected to
-- a socket with a bulb for illuminating the cross-hairs of the
dial sight;
a socket with a bulb for illuminating the cross level and the
tangent elevation thousandths scale;
? -- a socket with a bulb for illuminating the range drum and
longitudinal level;
-- a socket with a bulb for illuminating the azimuth scales of the
dial sight;
-- a socket with a bulb for illuminating the optical sight.
The socket and bulb used to illuminate the dross-hairs of the dial
sight are held in a special clip which, in turn, is fastened by a draw
bolt and nut to the eyepiece of the dial sight.
The socket and bulb used to illuminate the azimuth scales of the
dial sight are placed in a special bracket which, in turn, is held by
a swing bolt and nut to the housing of the dial sight (below the ring
of the azimuth scale).
The attachment for illuminating the operating area of the gun
captain consists of a conductorson one end of which is a socket with
a bulb and reflector and on the other end of which is a plug for con-
nection to the socket of the storage battery.
The socket has a clip which is. used to attach it to the belt.
The attachment for illuminating the operating area of the fuse-
setter consists of a conductor and a leather 'glove Which is worn on the
left hand of the fuse-setter. ?50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RnPFtnTnnoApA
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM 1?'
On one end of the conductor is a socket and bulb, and on the other
end is a plug for connection to the socket of the storage battery. The
bulb socket is fastened to a brace sewn into the leather glove.
The attachment for illuminating the gun collimator consists of a
conductor on one end of which is a plug for connection to the socket
of the storage battery and on the other end of which is a holder; a
reflector with protective glass is screwed onto the holder. The holder D72]
is attached to the collimator by means of a special bracket.
The carrying case is intended for holding the LUCh-S71M instrument
and its accessories and spare parts. The case contains special
receptacles, partitions, and springs into which the parts of the
instrument fit securely. The instrument is placed into the case in
accordance with the instructions attached to the inside of the cover
of the case.
The LUCh-S71M instrument is connected to the weapon in the following'
order:
-- remove the detachable bracket from the carrying case, place it
on the housing of the dial sight below the azimuth scale ring, and
tighten the swing bolt on the clip of the bracket;
-- remove the conductors for illuminating the sights and dial sight
and place socket 4 in socket holder 5, which is attached to the bracket
of the gun cradle by two bolts;
-- attach the holders of the five conductors coming from socket
to the appropriate locations;
place the light on the eyepiece tube of the dial sight and
tighten it by means of the hut;
-- place the battery box in the container on the gun shield and
secure it with straps;
-- insert plug 3 into socket 1; switch on the voltage when
necessary, using switch 2.
* * *
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
. CHAPTER TEN
LIMBER
50X1-HUM
179).;
.54. Construction of. the Limber
The limber is designed for transportation of the gun'. It serves
as S. frOnt running gear of the gun and is coupled to.the'tractor by ?
a special:coliar 11 (Fig 103).
During transportation,the trail ends are placed on the 'limber frame
56 and faStened to it by a nut 4.
The limber consists of the following main parts: axle 31, frame
boom 7, and wheels 57.
To the limber are.attached hose 8 with couplers and wire 35 with
sockets.
50
The limber axle 31 is of welded construction and has a box-type
cross section. The axle terminates in journals for'mounting the
limber wheels 57.
The journals have two highly finished surfaces to fit the wheel
roller bearings and are threaded for nuts 45 holding the wheel.
.The middle part of the axle 31 has a vertical hole for mounting
the limber pintle 21. Into the lower Part of this hole is fitted a
bronze bushing 18, and to the right and left of it are located two
brackets 14 for coupling to the limber boom.
On the upper surface of the limber axle housing are located box 30
for holding the spare parts and tools and box 36 for housing the sockets
of electric wire 35. Boxes 30 and 36 are fastened by bolts 55 and lock
washers. Close to the boxes 30 and 36 are mounted holders 69 (Fig 104)
for clamping the hose on the limber.
Also, on the limber axle are located two eyes 61 (Fig 103). with
a plate 13 which prevents the boom 7 from moving toward the axle 31
;staring the uncoupling of the limber from the gun.
\The limber frame 56 consists of a base 34 and pintle 21 supported
by. aPri.ng 20.
50X1-HUM
voi
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
"
50X1-HUM
The base 34 of the limber frame and the pintle 21 are connected
together by a shaft 1 and are secured to the limber axle. 31 by a'nut
lo.
The base 34 of the limber frame is capable of rocking on the
horizontal shaft :1 and turning with the pintle 21 on a vertical axis.
When the limber is separated from the gun, the frame. base 34 [p 1801
is held in a horizontal position by two springs 32.
The base 34 Of the limber frame has a horizontal hole fitted with
two bronze bushings 59 and 6o which support the base on the shaft 1.
Between the bushings is a recess for the upper. part of the pintle
:.21. On the upper surface of the frame base 34 is located a pivot 33
with a washer 3 ana nut 4 for securing the trails to the limber.
The nut 4 is locked in position by a handle 5 with a spring lock.
:The lock and washer 3 are attached to chains.
Also, on the upper part of the frame base 34 are two checks a and.
two checks b on Which rest the bearing surfaces m and n of the traiLS
The pintle 21 (Fig 103) has a horizontal hole in its upper part
for shaft 1, which connects it with the base 34 of the limber frame.
This hole has a slot for a key 2 which keeps the shaft 1 from rotating.
The shaft 1 has a grease cup and ducts for supplying lubricant
-to the bearing surfaces of the bronze bushings 59 and 6o.
The two surfaces of pintle 21, which rests on the bronze bushings
..;18 and 26, are highly finished.
The-lower part of the pintle 21 is threaded to accomodate the
nut 16 which fastens the pintle to the limber axle 31. The mit 16
.has a rubber buffer 17 and is heldin place by the check 50 and
.screw 48.
? The spring 20 is placed over the pintle 21 and rests on the washer
.19. From the top the spring 20 is held in place by the washer 22
with a leather ring 23 and a cover plate 25 attached to the limber
.axle 31 with four bolts 24 and nuts. '
On the top of the cover plate 25 is mounted a rubber buffer 28
with a jacket 27: The cover plate 25 also has a grease cup 70 (Fig 104)
.:,for lubricating the bearing surface of the bronze bushing 26 50X1-HUM.
im Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
C:41
? .-.> o
0+)
.0 0
0 0
.., ;-4--f-1-1)?sz--
''.,?....,., 01 +) .c;i / li 1111,\
... ..,) ;?I CO ;I?I
el?I i ? ,.
. ' ?..../ E--1 \ \ - \
.. ? \
? 50X1-HUM
V:\
v?:,\
? ?-
"-, ? (;,7,77.-
44
?
r-
0
a)
0
0
0
0
s?? 0 1
L.: -
???--
-

50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part- Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
?
1
2
3
14.
5
6
7
8
9
10
11
12
13
14
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Figure 103. Limber
shaft (Sb46-12)
key (A51050-67),
washer (46-76)
- nut (46-77) -
- handle (Sb46-16V)
- nut (46-59)
- limber boom (Sb46-10)
- hose with couplers (Sb41-32)
- nut (46-114)
cutter pin (A51050-222)
coupling collar (46-214)
boom prop (Sb46-7)
plate (46-98).
bracket (Sb4o-19)
7 nut (46-201)
lower buffer (46-73A)
bushing (46-105A)
washer (46-82A)
spring (46-67)
- pintle (46-58A)
- washer (46-68A)
- ring (46-138)
bolt (46-203)
- cover plate (46-61A)
- bushing (46-62A)
- buffer jacket (46-63)
- upper buffer (46-64A)
- rim and tire (Sb46-4)
- box for the gun kit (Sb46-22
- limber axle (Sb46-1A)
- spring (26-69)
- frate pivot-(46-129)
base of the limber
frame (Sb46-11)
35 wire with socket (Sb41-48)
36 - box (Sb46-29)
37 - packing ring (Sb4628)
38k- roller bearing No 7612
39 - hub (Sb46-3)
40 - roller bearing No 7609,
41 - gasket (46-' 135)
Declassified in Part- Sanitized Copy Approved forRelease2013/09/24 : CIA-RDP80T00246A031200160001_7
50X1 -HUM
C1802
50X1 -HUM
r (A51027-3
48 - screw (A51066-35)
50 - check (46-202)
51 - washer(46-176)
52 - jacket (46-12)
53 - bolt (46-18)
54 - journal .(46-8)
55 - bolt (A51000-5)
56 - limber frame (Sb46-17)
57 - limber wheel (Sb46-5)
58 - lock (Sb46-9)
59 - bushing (46-56)
60 - bushing (46-57)
61 - eyes (46-97) ?
62 - eye (46-40)
63 - ring. (14.6-50)
71 - left channel (46-222) ,
72 - right channel (46-221)
73 - cover (46-210)
74 - gasket (46-211).
75 - screw (A51060-8) ,
76 - screw with a flange (46-209)
77 - screw (46-213)
78 - coupling collar (46-300)
79 - key (46-301)
80 - screw (A51060-9)
81 - disk (Belleville)spring (46-302)
82 - plug (46-219)
83 - spring (24-50)
84 - ball 8
a - check
b - check
Declassified in Part- Sanitized Copy Approved forRelease2013/09/24 : CIA-RDP80T00246A031200160001_7
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
The limber boom 7 serves to couple the limber to the tractor.
The front part of the boom has a coupling c011ar 11 which is
clamped.with a nut 9. A cotter pin 10 keeps the coupling collar from
turning.
In the Middle part of the boom is a'prop 12 with a ring 63 which
serves to support the limber boom when the limber is disconnected from
the gun. In the travel position)the boom prop 12 is folded back and
attached to the limber boom by lock 58.
The limber boom 7 has two eyes by which it is connected to the
limber axle 31 with the aid of pins 68 and nuts 67 (Fig 10)4).
The boom 7(Fig 103) has also a connecting eye 62 with a plate 13
which prevents it from moving toward the axle 31 when the limber is
disconnected from the gun.
The boom 7 has two cleats 65 (Fig 10)4) and two holders 64 for
clamping the limber hoses.
? During-prolonged storage in open lots, the hoses 8 and electric
wires 35 should be removed from the limber.
The limber wheels 57 (Fig 103) are fitted over the axle journal 54
with roller bearings 38 and 40 and secured by nuts 45. The wheel
journals are protected from dirt by packing rings 37, washers 51, and
jackets 52.
The limber wheel consists of a rim 29 and hub 39 with a 34" x 7"
tire.
The tire is filled with foam rubber.
The hub 39 is fastened to the rim with six bolts 53 and nuts 43
and 44.
The caps 46 with gaskets 41, which are fastened with four
bolts 42 and lock washers, serve to protect the internal cavity
from dirt.
,In some limbers the base 34 of the frame (Fig 103) is reinforced
(the. 5-mm plate is replaced by an 8-mm plate), and the base of the
pivot 33 is turned with its larger side in the direction of travel.
The limber boom is reenforced with two channels 71 and 72.
[p 181]
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
11
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
13 6
(1,
62
A 33
9
? - ?V , i? ?
64 , ? ?
50X1 -HUM
0
P 611
Fig 104. Limber
8 - hose with couplers (Sb41-32); 13 - plate (46-98); 35 - electric
wire with socket (Sb41-48); 61 - eyes (46-97); 62 - eye (46-40);
.64 - holder (A71312-5); 65 - cleat (46=208); 66 - shaft (46-99);
67 - nut (A51011-8); 68 - pin (46-94); 69 = holder (A71312-5); 70 -
grease cup (A72273-6); a - check; b - check.
In this. type of limber the handle 5 is also reenforeed. To reduce
the wear of the pintle bushingsthe opening in the lower part of limber
axle 31 is closed with a cover 73 and gasket 74. The cover 73 is
fastened with screws 75. A screw 76 witha flange fit 6 into the lower
end of-the pintle 21 and is locked by three screws 77 which are secured
with a wire. The lower buffer 17 fits into the annular groove of the,
lower insert of the limber axle. The cover plate 25 is reenforeed.
The washers 19 and 22 are modified in such a manner as to increase the
beafing,surfaee of the bushings 18 and 26. The upper buffer 28 fits .
over the pintle 21 and has a membrane for protection of the pintle
bushings from dirt. A valve consisting of plug 82, spring 83, and
ball 84 serves to drain water and oil.
When the gun is Dulled by an artillery tractor AT-T, the ----"--
50X1 -HUM
collar 11 with cotter pin 10 should be replaced by spring eaupJ.J.1.6
coll 78 with cotter pin 79, the collar being fastened with a screw
80 e sprints 81. The replacement of the couplina collar 11 is made
L Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
ftwal? remove the cotter pin and unscrew the nut 9;
remove the coupling dollar 11 and the cotter pin 10;
place two springs 81 on the .coupling collar 78;
-- insert the cotter pin 79 and secure it with screw 80; fit the
Screw into the slot;
-- insert the coupling collar into the hole of the pintle paw of
the limber boom;
-- place four springs 81 on the protruding end of the
coupling collar;
-- screw on the nut 9 tightly and lock it with a cotter pin.
When the gun is pulled by an artillery tractor AT-S, the spring
coupling collar Ishould be replaced by a regular coupling collar 11.
55. Disassembly and Assembly of the Limber
Disassembly
? 1. Place wooden blocks under the limber axle and remove hoses 8
and electric wires 35 (Fig 104) if they have not already been removed.
p.1821:
2. Disengage the limber boom in the following manner:
-- remove the lock and cotter pin of the shaft 66 and remove the
plate 13;
-- remove the cotter pins and unscrew nut 67 with the wrench A52830-6, ,
and with the aid of a rod knock out pin 68 holding the limber boom;
-- remove the limber boom 7 (Fig 103).
3. Remove the wheels in the following manner:
-- with wrench A52840-10 unscrew the bolts 42 (Fig 103) which are
holding the cap 46; then remove the lock washers, cap 46, and gaskets
41;
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
remove the cotter pins and unscrew nuts 45 with wrench A52830-8;
screw the cap 42-314 onto the limber axle;
-- remove the wheel by hitting the wheel guard with a hammer and
prying off the wheel with a crowbar rested against the end of the
limber axle; repeat the same procedure with the other wheel.
4. Remo7C the base of the limber frame in the following manner: ,
-- tilt the base (to reduce the tension of the spring 32) and remove
the spring 32 with pliers; now tilt the base in the opposite direction
and remove the other spring 32;
-- remove the cotter pin and unscrew nut 6 with wrench A52830-8;
-- with the aid of a hammer and copper rod knock out the shaft 1
and separate the base 34 of the limber frame from the pintle 21.
5. Remove the pintle 21 in the following manner:
-? - turn the limber axle 31 until the pintle.21 comes into a
horizontal position;
-- remove the wire and unscrew screw 48; remove check 50;
-- holding the nut 16 with wrench 42-233, unscrew it with the aid
of a crowbar 41-116 inserted into the hole of the pintle;
-- remove the cotter pins and with the aid of wrench A52830-5
replace the two diametrically opposite bolts 24 connecting the cover
plate 25 to the limber axle 31 with bolts 42-228 secure the bolts 42-
228 with nuts and remove the other two bolts 24; then carefully loosen
the nuts of bolts 42-228 and remove the cover plate 25 from the limber
axle 31;
-- remove the pintle 21, cover plate 25, washer 22, spring 20,
and washer 19.
During the .disassembly of the limber it is forbidden to remove
the hub 39 from the wheel.
Packing rings 37, washers 51, and jackets 52 may be removed only
when it is necessary to replace them.
Prior to:installation of the wheels see that the packing rings
(Fig 73) are tightly fitted to the inner surface of the washer 51.
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Assembly
50X1 -HUM
[p 183];
1. Replace the pintle 21 in the following manner:
-- replace the washer 19, spring 20, washer 22, and cover plate 25; .
. with wrench A52830-5,bring cover plate 25 up against the limber,
axle by tightening the nuts on two bolts 42-228 and compressing the
springs;:
- place the bolts .24 in the two remaining holes in the cover plate,
,screw on the nuts with the wrench A52830-5, and insert the other cotter
pins; '
- l'eplace the bolts 42-228 with the bolts 24 one at .a time, screw
on the nuts with wrench A52830-5, and insert the cotter pins;
-- insert pintle 21, and holding nut 16 with wrench 42-233, screw
it on by turning the crowbar 41-116 inserted in the pintle opening;
-- replace check 50, secure it with screw 48, and lock it with a
wire.
2. Install the base 34 of the limber frame in the following
manner: ,
-- place the base on the pintle 21, insert the shaft I screw on
nut 6.with wrench A52830, and lock;
-- incline the base to the right and replace the second spring 32.
3. Mbunt the wheels in the following manner:
-- place them on the axle journals of the limber and remove the
cap 42-314; prior to installation,the wheel hubs are filled with
grease;
place the inner race of the bearing 40 with rollers and separator
on the journal 54;
-- screw nuts 45 on tightly with wrench A52830-8, loosen them
1/6 of a turn (to ensure normal performance of the roller bearings),
and lock;
-- replace the gaskets 24.1 and cups 46, and screw in .the bolts 42
with spring washers with the aid of wrench A52830-10.
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
4. Replace the limber boom 7, insert the pins 68 (Fig 104),
screw on the nuts 67 with wrench A52830-6, and lock.
5. Replace the air hose 8 and electric wire with socket.
50X1 -HUM
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
2
?
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
CHAPTER 11
50X1 -HUM'
SPARE PARTS TOOLS, AND ACCESSORIES.
56. Coneral.information'
The spare parts,. tools, and aCcessories, called ZIP for,short are
provided in order to keep the gun in combat readiness..
All ZIP items are found in one of the following;
:combat kit;
special tool kit;
:repair kit. ?
. The Combat kit is divided into a gun kit and a battery kit..
.
The ZIP gun kit contains spare parts., tools, and accessories which
should be with a gun under r11.) service conditions.
The ZIP battery kit contains spare parts, tools, and accessories
necessary for preparing a gun.for firing, for gun maintenance, and for
making small, emergency repairs that can be handled by batterY personnel
and facilities.
The special tool kit is required for the inspection, testing, and
repair of .guns by regimental personnel and facilities; is issued at the -
tame time as the guns; and Is attached to the artillery, workshop of the
military unit.
All ZIP kits are issued to troops at the same time as materiel.
Replenishment of them as they are used up is the responsibility of the
,chief of artillery ordinance; they are replenished from the district
(krug) supply in accordance with regulations. A general purpose tool
kit is issued to the battery artillery mechanic; when none is provided
in the TO, the gun is serviced with the general purpose tool kit of
the artillery workshop of the military unit.
Spare parts, tool, and accessory kits are stored and shipped in
special packing boxes. That -Potion of the equipitent which is required
at all times for firing and maintenance is installed directly on the
Gun.
The presence, working order, and proper custody of spore parts,
tools, and accessories must be given the same attention as that given
the condition of the gun.
Only special tools and accessories may be used in all work on
the disassembly, assembly, adjustment, repair, and maintenance of the
gun. Instructions for the use of special tools and accessorie50x1 -HUMC185J ?
given in the corresponding sections of this Service Manual and in the '
llustrated ZIP list (Appendix 4), where an indication is given of the
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
L-1-00091-00Z1-?0V917Z00108dC11-V10 :17Z/60/?1,0Z eseeiei ..104 penaiddv Ado pez!4!ue5 -1-led u! PeWsseloeCI
Fig.
intake hose (Sb22)
housing cover Sb4)
nut (A51010-5)
stud bolt (220
by-pass valve (31)6)
low pressure piston (31)8)
pump housing (31)5)
debivery vavle (Sb10)
CD
7:
105.
?
Hydro-Pneumatic Pump (52-1-035)
.
9.
grease cup (A52276-23) 17.
cap (66)
10.
high pressure piston (Sbll)
18.
packing ring (62)
11.
thrust rod(69)
19.
plug (61)
12.
yoke and handle (Sb13, Sb14)
13.
lock washer (64)
a.
support
14.
nut (65)
15.
connecting hose (Sb21)
16.
pin (67)
gt,3
ininH-1,X09
assified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
. 50X1-HUM .
If a part has no special tooll'a general purpose tool 'must be used.
Below is given a description of .the hydro-pneumatic pump 52-1-035.
and the hand eXtractor.
57. The Hydro-Pneumatic Pump (52-1-035) and Hand Extractor
The hydro-pneumatic pump 52-1-035 is used to. pump air and fluid
(steol-R) into the counterrecoil mechanism of the gun, to pump air into
the bottle of the equilibrator, and to produce artificial recoil.
Design of the Hydro-Pneumatic_LEa_
The hydro-pneumatic pump (Fig. 105) consists of the following basic
parts: housing 7 with cover 2, low pressure piston 6, high pressure '
piston 10, yoke with handle 12, hose connection 15, and intake hose 1.
The housing 7 is cast steel. It
The inside of the housing is machined
serves az the low pressure cylinder.
which the high pressure piston 10 and
attached.
joins all the parts of the pump.
to the diameter of piston .6 and
The housing has -a support a, to
the fork with handle 12 are
Cover 2 serves aathe,bottom 6f the low pressure cylinder and is
attached to the housing by four. stud bolts 4 with nuts 3 which are
-screwed into the head of the pump housing. -
A leather packing ring is inserted between the cover and the
housing The housing cover holds the delivery valve, filter, and cock'
20 (Fig. 106). ?
The delivery valve consists of washer 22; which is soldered inside.
the cover; the valve 21;'tpring:23; and nut 28, which is locked with
cotter pin 26.
Cover 27 is screwed into the center of the threaded housing. In
order to provide an airtight seal at the cover, a packing ring 24 is
inserted between the steps of the grooved indentation in the housing
cover and the face of cover 27. A filter 25 with gauze is installed
between cover 27 and packing ring 24. Cover 27 has a threaded recept-
acle b, into which a clamp nut 72 for holding intake hose 1 is screwed
when liquid is being pumped (Fig. 105). When the pimp is stored, plug
19, which is attached by a small chain to the housing cover nut, is
screwed into the receptacle.
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
? 50X1 -HUM
In the boss of the upper part of the housing cover there is a -
conical opening g (Fig. 106), into which cock 20 fits, and an elbow v
for the passage of fluid.
? The cock is used to transfer pump operation from air to fluid, or
vice versa. The position of the handle of the cock during the pumping
of fluid or air is.shown_by-.indicators marked 'Fluid" or "Air." 'The
pock, when in place in opening g, is held down by spring 31 and locked 5872
by nut 30 and its cotter pin 29. When the cock is positioned for pump-,
ing fluid or air, its extreme positions are limited by a screw 33 put
into the stopper of the cock.
Low pressure piston 6 provides the intial compression of the air.
The piston has trunnions b for connection with the thrust rod 11 (Fig.
105), which connects the piston with the yoke 12. The head of piston
.?6 (Fig. 106) has 4 annular grooves, three of which are occupied by
.piston rings 34.
The fourth groove e is used to hold lubricant. ? Seven aluminum
:bands (fins) 35 are attached to the piston head for the purpose of dis-
.6ipating the head generated during the Operation of the pump. Steel
bushing 36 is preSsed into the interior cavity of the piston and serves
at the, high presSUre cylinder ?
Valve seat 39, together with paronite washer 38, is screwed into
the center of the piston. In the bridge of valve seat 39 there is an
opening into which the stem of valve 37 fits. 'Spring 41, which slips
over the stem of the valve and is held by nut 42 and cotter pin 40,.
holds the valve against the seat and overlaps six by-pass openings zh!
? Piston 10 (high pressure) screws onto adapter 45, which fits into.
the opening in the, support a for the pump housing (Fig. 105) and is
held there.bYnut 49 with its cotter pin 13. Nut 52 (Fig. 106) of the
hese connection 15 is screwed onto the outside of the adapter when air
or fluid is being pumped. Cap 17 (Fig. 105) is screwed onto the
adapter .when the Pump is stored. The adapter it kept .from turning' by
pin (Fig. 106), the end of which fits into' an indentation in the pump
.housing. Fiber aSher 43 is slipped onto the adapter in order to damp
the vibrations produced by the low preSsure piston during operation.
y The outer surface of the piston has eleven grooves, five of which con-
tain piston. rings 51; the remaining six 6re used to retain lubricant.
Inside the cylinder there is a continuous duct i through which air
or, fluid passes from the high Pressure cylinder into the connecting
hose. Seat 47 of the delivery valve is screwed into the center of the
, piston. In the seat there are six ducts k for the passage of air or
50X1 -HUM
npclassified in Part - Sanitized Copy Approved for Release 2013/09/24 : CIA-RDP80T00246A031200160001-7
1-led LI! PeWsseloeCI
Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
,
36
Fig. 106. Parts of Pump (52-1-035)
2. housing cover (sb4)
6. low pressure piston (26)
10. high pressure piston (32)
15. connecting hose (Sb21)
20. cock (Sb3)
21. delivery valve (8)
22. -wnsher (2)
23. spring (9)
24. packing ring (77)
25. filter (Sb2)
26. cotter pin (A51040-71)
s27. cover (12)
28. valve nut (10)
2S8 cotter pin (A51010-15)
3(>< nut (A51011-3)
3]? spring (16)
3c: washer (15)
3=E: screw (A51062-5)
34. piston ring (31)
35. alum bands (fins) (28,29,30)
36. bushing (25)
38.
39.
4o.
41.
42.
43.
44.
by-pass valve (24)
paronite washer (27)
valve seat (23)
pin (A51010-71)
spring (9)
valve nut (10)
fiber washer (38)
Pin (39)
adapter (33)
spring (36)
valve seat (34)
pressure valve (35)
barrel (37)
leather gasket (41)
piston ring (40
special nut (75)
58.
59.
6o.
61.
62.
63.
64.
65.
66.
45. 67.
46. 68.
47. 69.
48. 70.
49. 71.
50. 72.
51. 73.
52. 74.
53. gasket (76) 75.
54. adapter
55. nipple
56. sleeve
Li-Y0
connecting pipe (81)
ball (A51650-42)
spring (54)
stop (55) -
gasket (56)
nipple (48)
special nut (51)
transfer nipple
handle base (45)
handle (46) .
handle head (47)
fork (43)
trunnion (42) 1.
nipple (55) k.
clamp nut (58) 1.
sleeve (84)
hose (83)
connectiong (Sb20)
duct
duct
hole
ininH-1.X09
(80)
b.
threaded bushing
d.
trunnion
(82)
V.
elbow
ye.
groove '
(78)
g.
conical opening
zh.
by-pass duct
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
-. 31
311\
29
3 % , 20
......,.....- ---.....4 vs_ ? , .?
.,...,..,,
,-- ,,,,,,4,?u,,,cinui,,,
...,......._i if
IS
I
1--11__,
,
-...?-_---/-,
r!
:k.,,,,,,=:=2.7:--?
V.
56
55
44C.?\.1 \i
61
62
611
,
S3 2
66 67 68
eclassified inSanitized Copy Approved for Release 2013/09/24 : CIA-RDP80T00246A03120016UUu 1-
50X1-HUM
?t,
,
Location
1
Method
Lubricant
When Applied
38
stop
spatula
AF-70
as for 3
39
stop /
same
AF-70
same
4.0
couplers for scour-
ing breech ring
for travel
rag
AF-70
as for 1
41
.
spaAe stop
spatula or
rag
AF-70
as for .3
42
Stop
same
AF-70
same
43
winch stop
same
AF-70.
same
.44
coupling bolt
same
AF-70
-before and
after march
45
cross-leveling axle
grease gun
AF-70
before march
?
through plug
46
pintle upper sleeve
same
AF-70 ?same
47
limber wheel bosses
spatula
grease b
at installa-
tion '
148 I
stop
spatula or
AF-70
as for 3
?
rag .
? 50X1-HUM
200160001-7
A ?,,-,-,A,pri for Release 2013/09/24 : CIA-RDP80T00246A031
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
CleN
}-4
e
(34
50X1 :HUM
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
, Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Fig 148. Lubrication Diagram for Limber
(Appendix 3)
50X1-HUM
(3272
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
50X1-HUM flL
ILLUSTRATED GUIDE TO SPARE PARTS, ACCESSORIES AND TOOLS FOR M-46 AND ,1-..141
.APPENDIX 4 [ID 330]
Column headings:
1. Part or assembly number
- ?
2. Nomenclature.
.3. Cutaway drawing
Supplied per
z. weapon
(1) amount
(2) box No.
b. battery
(1) amount ?
(2) box No.S.
tool
? a. amount
lb. boxNo
6. Application of tool. Part/assembly:No. by group
[Note: Entries below are keyed to part number in column 1. 1Sb' before
? part number means 'assembly') .
Sb02-5
Striker mechanism
Spare parts, Breech gr. 02
02-19
Spring
02-29
Main spring
08-48
Valve
Buffer gr. 08 .
Sb12-10
3TIT(T2-.
Holder with bubble cartridge
Sight qr. 12
[ID 331]
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
,
I Declassified in Part - Sanitized Copy Approved for Release 2013/09/24: CIA-RDP80T00246A031200160001-7
???????????;???????????
???
? 4
:?? ' 4
?????