ADDITIONAL CHAPTERS OF HANDBOOK ON T-54 TANK

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80T00246A028600720001-5
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 186
• Document Creation Date: December 27, 2016
• Document Release Date: February 26, 2013
• Sequence Number: 1
• Publication Date: December 5, 1960
• Content Type: REPORT

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,INFORMATION 'R PO a INFORMATION REPORT
CENTRAL INTELLIGENCE AGENCY
50X1 -HUM
This material contains information affecting the National Defense of the United States within the meaning of the Espionage Laws, Title
18, U.S.C. Secs. 793 and 794, the transmission or revelation of which in any manner to an unauthorized person is prohibited by law.
S-E-C-R-E-T
50X1 -HUM
COUNTRY USSR
SUBJECT Additional Chapters of Handbook on
T-54 Tank
DATE OF
INFO.
PLACE &
DATE ACQ.
REPORT
DATE DISTR.
NO. PAGES
REFERENCES
er December 1960
1
RD
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SOURCE EVALUATIONS ARE DEFINITIVE. APPRAISAL OF CONTENT IS TENTATIVE. 50X1 -HUM
S1,
ATE
(Note: Washington distribution indicated by "X"; Field distribution by "*".) _
English-language documents (translated from
the Russian
Att. No. 1: Chapters 3, 9, and 11 of the handbook on the T-54 tank
described in referenced reports. The titles of these
chapters are as follows:
Att.
Chapter 3: "Tank Armament", with 28 diagrams numbered from
25 to 53, with number 45 not included.
Chapter 9: "Fire Fighting-and Smoke GeneraLkig Equipment",
with eight diagrams.
Chapter 11: "Instructions for Driving the Tank", with one
diagram.
No. 2: A collectilan of diagrams entitled "Document ,A-lt (Miscellaneous
Documents), Book of Diagrams". The diagrams pertain to various
parts of the tank, including sights, triggpr mechanism, recoil
mechanism, elevating mechanism, pumps, shells, and
diagrams are numbered consecutively from 1 to 100,
numbers 18 through 24 are not included.
Distribution of Attachments:
Army: Retention (1 copy each attachment)
fuses. The,
except 1-.HP1-,
50X1 -HUM
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X (,MY
AR
x JNAVY
AI R
Fat
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OCR
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1?111#?41
4b0le
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General. Description
TANK .ARMAMEN'r
50X1-HUM
A 100mm. gun (1944 model type D-10 T) is mounted in the turret, and co-axial1
with it a 7.62mm. machine gun (194.5/4b model) (SGMT). On the turret is mounted
a 12.7mm. anti...eircrafti4G4 (1938146 model) (rebK). Inside the tank to the
right of the driver is mounted a front hull 7.62mm M.G. (SGT).
The sighting system for the gun and co-axially mounted M.G. is provided by a
telescopic sight type Tah 2..22, a sight-clinometer and an azimuth indicator, marked
on the race ring of the turret.
On the hull rear plate are fitted two smoke oanisters ($h -5) to provide a
smoke screen.
Inside the tank there is a rest for one 7.62mm automatic carbine (AK) which
is the personal weapon of the tank crew, and a signal pistol.
Sec.
1. Role and Characteristics of the Gun.
The 100mm tank gun is deaigned:-
- for engaging enemy tanks and self-propelled guns;
- for the destruction of embrasures of pillboxes and wood
positions and of different sorts of field works;
- to neutralize and destroy enemy artillery;
- to destroy enemy infantry weapons and personnel.
The effective rate of fire of the gun is up to 7 rounds a minute.
The gun and its sighting equipment allaw:-
- direct fire with the aid of the TSh 2-22 sight at ranges up to 6900m;
and earth fire
indirect fire with the aid of the cross-level and azimuth indicator at ranges
up to 15,600 in.
The direct fire range with armour piercing shell is 1000 in and with the H.E.
fragmentation shell 1100m (assuming the target to be 2m high).
Laying the gun in the horizontal plane is accomplished by traversing the
turret, thus allowing a 360? field of fire. The vertical field of fire is from -
4? to +17?.
Sec. 2. Short description of the Operation of the Gun.
The 100mm tank gun (see figs 25, 26) consists of tne following main parts:-
the barrel (1), a aemi-automatic breech, cradle (17), recoil mechanism (5),
elevating mechanism (16), recoil guard with trigger mechanism, trunnions (30) with
acicular bearings and a compensator (28).
The barrel consists of a monoblock tube, sleeve, breech ring and a guide rod.
The semi-automatic block type breech moves horizontally.
The cradle (17) is cast and of a tubular type. Above it in the lugs of the
cradle are housed the buffer and the recuperator cylinders (the buffer to the
left, the recuperator to the right looking in the direction of firing). Inside
the cradle is the barrel, which on recoil moves on bronze liners attached to the
cradle.
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4
The cradle is attached to brackets on the tank turret by two trunnions. (30)
The recoil system (5) consists of a hydraulic buffer and hydropneumatic
recuperator. The buffer is filled with 6.4 litres of "Steel M" (glycerine/
ethyl alcohol mixture): the recuperator is also filled with "Steel W and
nitrogen. The amount of liquid in the recuperator is 4.4 ? 4.6 litres: the
initial pressure of them:arose* 53-57 atmospheres.
The buffer and. recuperator rods are attached to the breech ring and on firing
move with the barrel.
Normal length of recoil is 490-550 mm, maximum length 570 mm. (marked STOP).
The elevating mechanism (16) is of the arc type with an actuating link on the
left side of the gun.
The firing mechanism consists of an electrical and mechanical (hand) firing
lever.
The electrical firing device is housed on the handle of the elevating
mechanism nut. The mechanical (hand) firing lever (14) is outside behind the
left Shield of the recoil guard.
The recoil guard consists of a fixed part, attached to the cradle, a
collapsible part (12) and the tank comnander's removable guard (11). During
firing the guard protects the crew from blows from the breech.
Sec. 3.
Short Description of the Gun Kounting.
The 100mm tank gm is mounted in the turret on trunnions.
The cradle trunnions are removable: one end is fastened by bolts to the
turret brackets, and the other passes through apertures in the cradle.
To reduce friction on the moving parts of the trunnions acicular bearings
are fitted. The bearings have a packing, which protects them from dust.
The turret embrasure in front is covered by a movable armoured plate, which
is placed on the gun barrel and fastened by bolts to the front cradle collar. To
protect the fighting compartment from dust, the embrasures of the gun, M.G. and
T.Ea12-22 sight are covered by covers. The covers are removed from the M.G. and
sight in action.
On the left turret bracket is fitted the elevating and compensating mechanism
of the tank gun. The elevating mechanism allows vertical angles to be applied to
the gun. The compensating mechanism ensures an equal effort on the elevating
hand wheel through the whole vertical rang.
The gun is laid in the horizontal plane by traversing the turret up to 3600
by means of the turret traverse mechanism.
To clamp the gun in the travelling position a clapping device is fitted in
the -turret, giving a choice of three positions.
Sec. 4. Sighting and Observation instruments.
(a) The TM 2-22 Pivot
The TSh 2-22 sight is used for direct fire by both the gun and the co-axial
7.62 mm k.G. The sight (fig. 27) is a telescopic optical tube with a sight head,
which moves in the vertical plane at a given angle in relation to the eye-piece.
4hen the sight is mounted in the tank, the sight head is rigidly linked to
the gun by a bracket attached to the cradle. The eye-piece section is attached
to the turret roof by a hinged clamp.
Optical ';haracteristics of the Sight.
Magnification (variable) 35 x and 7 x.
Fiela of Vision, uegrees 18 and 9.
Diameter of the Exit rupil mm. ,../.4. anu 2.7.
Distance of Exit Pupil mm 2,-).
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The 23112.022 sight consist of a sight head-witlill Nietihemechanism, a pivot
with a straightening system, a variable magnification box, an eye-piece with a
light filter, sighting gear, and protective glass heater and wiper. 50X1-HUM
The sight head consists of the in case (21) with a cap containing the
protective glass and heater. In the lower part are two cylindrical trunnions (20),
and in the Upper pert - a tooth and cam mechanism with a screw (4) to fasten the
sight to the bracket.
In ,the might head is the sighting gear mechanism and the direction (3) and
height (5) adjusting screw mechanisms. In the upper part of the sight head beneath
the screws (3) and (5) is screwed a lamp socket to illuminate the graticules.
The pivot mechanism (19) consists of the front and rear sections of the pivot
and the side mirror frame.
The front part of the pivot is firmly attached to the top of the sight head
and the rear to the variable magnification box. The front and rear sections are
joined together by two junction plates, to the left of which is attached the side
.mirror frame. tine mirrors are attached by toothed plates.
The variable magnification box (18) is desigeed to house the mechanism which
alters sight magnification. The mechanism consists of two movable lenses in
holders. The holders are hung on free-turning axles from the top of the box.
Depending on which of the lens systems is in use, the sight gives 7 x or 3.5 x
magnification. Outside the box is a handle which brings the lenses into play.
When the handle is pushed away, 7 x magnification is brought into play: when
pulled towards one, 3.5 x magnification is being used.
The eye-piece (9) is a tube with a rotating eye-ciece and an excluding light
filter, which enables the sight to be used locking into the sun. The switch (14)
for inserting and withdrawing the filter is on the left hand side of the sight.
Outside on the tube is fitted a holed flange (10) for the pivot clamp and a bracket
(13) for attaching the padded eye-piece (11).
The eye-piece section may be adjusted to obtain a sharply defined picture by
turning the sleeve (12).
The sighting gear mechanism consists of a knurled. nut (is), a cardm shaft (17)
and two pairs of bevel gears. The turning movement from the knurled nut (15) to
the card= shaft is transferred through the first pair of bevel gears, and the
movement is continued from the 'card= shaft to the frame in which the graticulcs
are set through the second pair.
If the horizontal cross-wire can not be fitted into the zero position of the
grationle scale by turning the knurled nut (15), the four screws on the end face
of the knurled. nut (15) should be unscrewed 1 - 1 turns. Then, turnihe the
knurled nut and lool:ing through the sight, brill: the zero bostion of the scale snd
the horizontAl corss-mire together. Tighten up the screws after adjusting.
The protective glass heater prevents icing-up and misting-over of the pro-
tective glass. The heater is in the form of a spiral, pressed into the rim of the
protective glass nolder. Outside on the holder in attached a laminated contact
adaptor, to which in joined one end of the spiral: the other end is joined to
earth on the sight. A wire from the plug (2) is joined, up to the contact adaptor.
The plug is on the left hand side of the sight head. The heater must be switched
on when the sight is being used in rain or snow.
The wiper mechanism cleans the protective glass of dust, mud, snow and frost.
It is fitted on the right-hand side of the sight on the variable magnification box
and the sight head.
The optical system of the sight (fig. 28) consists of the following parts:
protective glass (1), object glass (2) graticules condenser (4,, four mirrors
(5), an erector system (o-fixed lens, 7,9, moving lenses) light filter (9) and
eye piece assembly (11). 50X1-HUM
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When using the 3.5 x magnification the movable lens (8) with a focal length
of 275 mm is switched in. When using the 7 x magnification the lens (8) is
withdrawn and lens (7) with a focal length of 550 mm is switched in.
The graticules are a glass plate with a scale on it (fig. 29). It is in
the focal plane of the object glass. On the graticules are the following scales:-
- scale inscribed:0) for use when firing HE fragmentation at full Charge.
POLN
- scale inscribed BR(2) for use when firing AP tracer with full charge.
412B
- scale inscribed OP(3) for use when firing HE fragmentation with reduced charge.
UM
- scale inscribed UT( - for use when firing heavy bullets from the MG.
T
The divisions of the scales are marked 2,4,6, and so on corresponding to the
ranges in 100's of metres. 2 = 200 in, 14. = 4100 m, 6 . 600 in etc.
Beneath the range scales are sighting marks - the lateral correction scale.
The central large inverted V is for aiming without lateral corrections, the
remaining inverted V's and marks are to apply lateral corrections. The value of
a division is .004. (4 mils), and between inverted Via is .008 (8 mils).
The divisions 10, 18 and. 20 on the vertical line serve to ascertain whether
it is possible to fire over the heads of our own troops.
The clearance between the upper and of the vertical line and the angle of the
inverted V is equivalent to .002 (2 mils) and serves to define distances to
targets.
In addition to the range scales and lateral correction scales, an immovable
horizontal line appears in the field of vision of the sight.
Turning the knurled nut on the sighting gear, move the graticules in a
vertical direction so that the division corresponding to the range coincides with
the indicator line.
The sight bracket fastens the sight-head firmly to
gun. It is fitted on the left-hand side of the gun to
ring and is fastened by 4 bolts with spring-'washers and
The pivot clamp of the sight (fig. 50) fastens the
sight in a position comfortable for the layer.
NOM.
(1)
OF
=
H.E. shell
Full
Complete
(2)
BR
=
Armour :piercing tracer
the moving part of the
a recess in the cradle
a locking pin.
eye-piece section of the
412 B 412 B (index explosion)
(3) 2 = H.E. shell
UM Reduced
(4) GT
Heavy
Ot&T
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The upper hinged part of the clamp is fastened to a bracket (1), melded to
the inner side of the turret roof, by a bolt (3) and washer (2). 50X1-HUM
In the bracket are three threaded apertures to adjust the height of the eye-
piece according to the height of the layer. To adjust the eye-piece laterally,
the lateral aperture under the bolt (3) in the upper part of the clamp is used.
The drill for mounting and fastening the sight in the tank is as follows:-
1. Loosen the sleeve (7) (Fig. 27) of the clamp on the eye-piece tube, first
unscrewing one or two turns the fastening nut of the sleeve.
2. Unscrew the screw (4.), fastening the sight to the bracket; the catch of
the fixing spring should NCT slip from the head of the adjusting screw.
3. Put the sight nose first into the sight bracket aperture, and mount it on
the bracket so that the tooth of the sight head fits into the recess of the
bracket, and the trunnions (20) lie straight in the radius recesses on the bracket.
4. With a special box spanner, (6) screw in the adjusting screw: the lug
Should clamp the sight bead firmly into the bracket.
5. Join the sleeve of the pivot clamp on the sight to the connecting plate of
the clamp by the bolt, and make fast the bolt ends with split-pins.
6. Clamp the sleeve to the sight with the screw and adjust the height of the
eye-piece to suit the layer, using the openings in the bracket.
7. Fasten the padded eye-piece with a screw on to the bracket (13) in a
comforte:ble position for the right or left eye.
8. Join up the electric lead for the illumination of the graticules and the
heating of the object glass protective glass.
(b) The Sight Clinometer and Turret Azimuth Indicator.
The Sight-Clinometer (fig. 31) is designed to provide the necessary angles
of quadrant elevation for the gun when firing from concealed positions.
The sight clinometer consists of a sight clino drum (4), a cradle (2), a
spirit bubble (1) and a worm spindle with a milled knob (6) which is attached by
a nut (3).
On the top of the clino drum is a divided scale, numbered from - 1 to + 5.
On the worm spindle is fixed a ring (5) with 100 divisions.
fastened by a screw (7).
The ring is
Every division of the scale on the drum equals 100 mils and each division
of the worm spindle ring equals one mils. Thus using the sight clinometer the
gun may be laid in the vertical plane from - 100 mil to + 500 mils with an
accuracy of one mil.
A folding lamp which may be switched on when necessary is fitted over the
sight clino.
The turret azimuth indicator is designed to show the angle of traverse of
the turret in relation to the hull of the tank. The divisions of the indicator
are marked on the lower ball race of the turret. The ball race is divihed into
600 small divisions, the small ones being worth 10 mils and the large one 100
mils.
The indicator bar is situated on the layer's left on the upper ball race.
The indicator bar and the azimuth indicator divisions are illuminated by a small
lamp. 4hen the gun is turned into the direction the tank is moving, and the
longitudinal axis of the gun coircides with the longitudinal axis of the tank,
the indicator reads 30 mils: with the gun turned to the rear, 60 mils: 50X1-HUM
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SECI3ET
to the right, 45 mils and to the left 15 mils.
The turret azimuth indicator may be used for night firing and also for target
indication.
(c) The K 10-T Lensatic Sight.
The K 10-T lensatic sight is used with the DiCSh MG to engage
Basic Optical Data
aerial targets.
Focal length object glass mm
60.9.
Light diameter of Object glass mm
40
Value of small division of rangefinder mils
10
Value of large division of rangefinder mils
20
Angle subtended by radius of small graticule ring, degrees
4.5
Angle subtended by radius of large graticule ring, degrees
7.
Distance of eye pupil -
from small ring mm 250
from large ring mm 165.
The K10-.T (fig. 32) consists of a sight head (8), optical system and a light
filter (3). The sight is mounted in a recess in the sight casing and is attached
by two collars (1) and (7). When travelling the sight is covered by the sight
casing lid (2).
The sight ma.y be adjusted vertically and horizontally by regulating bolts (9)
and (10).
To adjust the sight in the horizontal plane the binder bolt (12) must be
slackened and, by turning the regulating bolt (1C), adjust the optical axis of the
sight horizontally to the point of aim.
To adjust the sight in the vertical plane the binder bolt (11) must be
slackened, and by turning the regulating bolt, adjust the optical axis of the
sight vertically to the point of aim.
ahen the adjustment has been completed, tighten the binder bolts (11) and (12)
and fasten the regulating bolts (9) and (10) with nuts.
The optical system (fig. 33), mounted in the body of the sight, consists of a
silvered and laccaered glass (5) on which are marked the graticules (the glass is
in the focal plane of the object glass): a mirror (4), which ensures the re-
fraction of the optical axis at 90?: an object glass assembly (3): a reflector
(2) with a serai-tsau-,sparent silvered surface on a reflecting glass.
iihen firing at a tar;et on a bright backound a removable light filter is
used.
tight rays from the target fP11 on the graticule -lass. The ,irwage of the
graticules, is reflected by the mirror (4) into the obz;ect glass (3) anc strikes the
reflector 03,1. As a result of the corresponding selection of reflection co-
efficients, it is possible to see simultaneously on the reflector (2) both the
graticules an tie target in day time without electrical illuLlination. Thus both'
target and graticules appear on the reflector sisgultaaeously.
(d) The Tank Corriander's Cbservation TinstrukentS.
In the front part of tie corm.ander's cupola is mounted an observation periscope
TPK-1, and around the hatch are four prismatic evices. By means of t-iic rrange-
ment the tank commander has all-rounc.: vision without trnversirg the turret.
The TPK-1 periscope is desigied for observing ground, identifying targets,
gauging ranges to targets, taa-a)et in itcn ani correcti i of artlilery fire.
The TEE-1 (fig. 34) combines ol:secvaticn instrument with 'binoculars.
Magnification is variable (1 x or x,.
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Magnification 5 x.
Field of view, degrees 7.5.
Diameter of exit pupil mm 5.6.
Distance of exit pupil mm. 20.
Observation through the mirror
Magnification
Field of view, degrees
horizontal
vertical
Arc of vision, forward, degrees
horizontal
vertical
lx
17.5.
7
36
10
50X1-HUM
The instrument is fastened by a frame (13), the axles of which go through
holes in the side walls of the instrument and hold it firm. The instrument may
be tilted in the vertical plane. A binder bolt (2) fixes the instrument in the
tilted. position. The periscope is turned in the horizontal plane by rotating the
commander's cupola.
The periscope is in three main parts: the periscope head, the main body and
the eye-pieces.
The periscope head contains the upper prism.,
The body contains the mirror (18), protective window (16), handles (7) and
eye-pieces (5). On the left handle there is the commanders control button (9).
The body and head-piece are joined by a pivot mechanism (15) and a lock (2)).
The eye-pieces (5) consist of object glasses and eye-piece assemblies. The
left eye-piece is fixed immovably to the body, but the right can move in a slide
When the knurled nut (6) is turned. In the field of view of the right eye-piece
are graticules for measuring angles in the vertical and horizontal planes, and a
range-finder scale for measuring ranges to targets with a height of 2.7 metres.
To define ranges the target image must be set between the t.ick and dotted lines
so that it touches them. The iigure under which the imAge is gives the range to
it in 1005 of metres.
The eye-pieces must be adjusted for clearness of image and to fit the eyes
of the observer. To adjust for clearness.
1. Set the mirror (18) with the knob (3) in a vertical position parallel
with the front wall of the periscope.
2. Turning the collars (17) adjust the right eyepiece for sharpness of
image and then the left. To set a distance between the eyepieces, equal to that
between the eyes of the observer, turn the knurled nut (6) and adjust the right
eyepiece in relation to the left until a comfortable position is reached and the
image is seen in one circle and not two.
3. Then remember the number which appears on the scale (8) against the
Indicator. This number (e.g. 65) is the distance in millimetres between the eye-
pieces and between the eyes of the Observer. In future 'it:en preparing the
periscope for operation the eyepieces may be set directly by using this number.
Before using the mirror for observation, tilt it, pull out the khob (3) with
the fixing device to the right and turn it back to stops into the head of the
arresting screw. Then release the knob so that the fixing device fits into the
recess in the regulating plate.
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?
If it beeooes necessary to clean dust from the mirror and object glasses
(use cleUn, dry flannelling), unscrew the screws (i0) and lift the frame with the
protective window,
In the event of damage to the =per prism (11), it may be replaced by a spare
one, as fol1ows:-
1. Unfasten the lock (24 raising the catch.
2. Turn the body of the periscope 900 to the head-piece. In this position
it will be held by the pivot mechanism lock plate.
3. Remove the prism, pulling it aown by the rim.
4. Insert the spare prism.
5. With a finger of the left hand press down on the pressure plate (1) of
the lock of the pivot mechanism, and with the right hand turn the periscope back
to its working position and cloee the lock.
The prismatic observation devices (episcopes) (fig. 35) mounted in the
commander's cupola, are identical in design. Each episcope consists of a prism
in a metal frame 4.. In front of the eye-piece is a protective window (1). On
the lower part of the episcope is a rubber pad protecting the observer from hard
knocks on the episcone.
le) The Layer's and Loader's Obse-vation Devices
1K-4 periscopes are fitted in the righting compartment for the layer and
loader. The main, parts are as follows:-
Prisms (10 and 15), main body (6), novable prism (13), brow pads (14.) and
handle (16). The main body consists of two parts joined by a pivot mechanism
and a lock (7). This device enables the upper prism to be changed without
removing the periscope.
The periscope is fastened -by two flanges (12) and Lushes (E!). On the side
walls of the upper part of the bo y are trizinions which. Le in recsses in the
lower flange and support the periscope. :he binder bolt (r) holdi the device in
the s.1:-:.ht position.
The movable prism (13), faste.e n the reriscope, enables the observer to
see backwards. If the prism is move ight upwards, tier, observation is re-
stricted to the front if, ;lowe-.7er, 1 ove.: right dawn am: tle periscope ta-ned
through 1_10?, then observation is extch..ed to the rear.
In these positions the pris is held by holding balls (1). To ollange the
upper pri.i:a in the event of 0.e1isai;e, open the lock (7), turn the lrwer part of the
periscope through 900, reLlove t..c prism, insrt the new one a):,.7_rej,2in 'oath halves
with the lock.
fl'o ascertain the direction of mr-trch the periscopes are eouT., a
graduated scale anCi indicator. The scale !,..)) is fixed ir.v.,ovabl: the top of
.e -t,Lrret, and the indicator 2) moves with the periscope. --,raduate...1 scale
lias '30 visi:.ns worth 60 ( 100 nils) :_u-ranged in a ser----cirr,L.e.
(f) river echanic s ObservationInstruments.
For observatin ri th. hatches close,': two in:.truments arc ho-used the
between the hull top-plate and the hull front-plate (fig. 57).
The in.:- trent consi sts of two 7Drisris -(4. and 11 set in a rpetT?1
Cn the casinj is a rubber packing (1.5,\., ',71,?.--1r: Prevents (lust .7'1'0111 gettinE, nto
tank.
2).
th'o
The 1 ef. e;i:cope allows to the front IL-, p:Lrtially
an 1.; ,e rit-hani one, set at an anyle. of 1 to the lel' t-1-18 r.,1 one, a .ows
observation forwar-.i and right. otn erp:, (12e s re raount en on a iaie (10) a ray
be fixed in a raise or lowered pos-::.t.-m by an aijuter bolt (3).
? LA
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In iront 01 tne internal windows of the Ieft"and right episcopes are pro-
tective windows of toughened 4ass. The protective windows (9) are set jr,
brow pad (7). 50X1 -HUM
Outside the tank in front of each window is a rubber wiper (14) attached by
3 screws. To clean the glass of snow and mud move the episcope up and dawn.
The internal windows should be cleaneu when the episcope is in the lowered position.
To wipe the inner side of the protective window, the episcope must be removed.
To clear snow and dust from the windows, clean, dry flannel must always be used.
In the event that an episcope is damaged or destroyed during operations, the
unserviceable episcope is removed, and a spare one fitted.
(g) Maintenance of sightimg and optical equipment.
During technical servicing and march halts the condition anu fastenings of
the instruments rust be checked. :Juring- technical servicing 140.3 in addition the
zero aiming position of the rih 2-22 sight is checked.
Dirt should be wiped off ?ith a clean rag, and the instrument should be
lightly oiled with incAustrial vaseline. The glass surfaces must not be oiled or
touched with the hands: it is ?emitted only to wipe them with clean dry flannel.
Excessive force must not e applied when taming knurled nuts and tightening
binder bolts.
Care must be taken when fitting and removing the insti-uments not to damage
the optical parts.
Sec. 5. Ammunition
Ammunition carried 'by the T-54 is as follows:-
- 34 rounds for the 100mul1)-10T, of which 20 are HE fragmentation and 14. AP
tracer.
- 500 rounds for the 12.7umllalrew of which 400 are AP incendiary'B.32 and
100 AP incendiary tracer T.
- 3000 rifle rounds for the 7.62mm MG sGmT, of which 1800 have a heavy bullet,
300 on AP-incendiary bullet and 900 a tracer bullet.
- 300 rounds 1943 type for the 7.62swaKalashnikov automatic carbine, of which 282
are ball amn. and 18 tracer.
- 20 hand grenades io-1.
- 2 sets of signal cartridges for the signal pinta.
2 smoke canisters.
(a) Ammunition Stowage
The stowage of the 100mm. rounds is shown on fig. 38. 34 of these fixed
amn. rounds are stowed in speoial racks in the hull and turret of the tank. The
main Shelved rack (fig. 39) for 20 rounds is in the front of the hull. It
consists of a front (2) and rear (1) plate, trays (3) and safety brackets (4).
A. shelved rack for 5 rounds is housed in a recess in the turret.
Amn, clips for 9 rounds are situated:-
- on the left side of the hull - 2 rounds.
on the right side of the hull - 4 rounds.
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- in the bilge of the tank by the fighting compartment bulkhead - 1 round-
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on the right side of the turret - 2 rounds,
The amn. clip (fig. 40) consists of a mall bracket (1), a spring (2), a
large bracket (3), wire catches (0, clips (5), and drop-hinged holders (6).
Stowage of 12.7mm rounds for the IghiCMG. 200 rounds for the MIL MG are
fitted in belts of 50 each and stored in magazine boxes. There are 4 of these
boxes, situated:.-
in the fighting compartment of the tank an the left-hand side of the hull -
on a bracket on the layer's seat (under the gun - 2).
- on a bracket on the MG cradle - 1.
The remaining 12.7mm rounds (300) are stored in their issued packing in
spare places.
Stowage of 7.62mm rounds for the SGIAT MG. liounds for the co-axial and front
hull EGs SGMT are fitted in belts of 250 rounds. The belts are kept in 114
magazineboxes, of which 11 are for the co-axial MG (the scale for the SGMT) and
for the hull MG (additional). The belts for each are identical.
The magazine-boxes for the co-axial MG are situated:-
- on the right side of the hull behind the racks -
- on a bracket on the layer's seat (under the gun) - i.
- on a bracket on the co-exial MG - 1.
- in the front of the hull -1.
Of the 11 magazine-.boxes, two are reserve.
Magazine-boxes for the hull MG are situated:-
- to the right front of the driver - 2.
to the right of the driver's seat under the biG. - I.
3
Stowage of rounds for the AK automatic carbine. The AK automatic carbine
is kept in a tarpaulin cover in the turret on the right-hand side. 180 rounds
(in six curved magazines) are kept in a tarpaulin bag, which is fastened to the
right side of the turret under the carbine. The remaining 120 rounds are kept in
any available space at the crew's discretion.
Stowage of the F-1 hand grenades. 12 F-1 hand grenades are kept in 5
tarpaulin bags and are fastened by straps to special shelves an the sides of hull
in the fighting compartment. The grenade primers are kept in a separate bag
marked "PRIMER" . The remaining 8 grenades are stored at the orew's discretion.
Stowage of the 26mm. signal cartridges. The signal pistol and 2 sets of
cartridges are kept in a leather holster and special bag, attached to the turret
behind the commander's seat.
(b) Ammunition Markings.
Markings are defined as the standard signs and inscriptions painted on the
Shell, cartridge case and packings of ammunition (see fig. 41).
Their function is to distinguish rounds and enable to be used only those
with are designed for a given gun and correspond to the execution of a given fire
task.
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ine rollowing fixed amn, is used with the 100mm tank gun:-
Designation of Round
Round
Code
Shell
Code
Charge
Fuze
Fixed cartridge with AP.mtracer shell
Fixed cartridge with AP-tracer Shell
and ballistic cap(1)
Fixed cartridip with AP-tracer sharp
pointed shell?)
Fixed cartridge with HE -
fragmentation shell (full charge)
Fixed cartridge with BE - fragmen-
tation (reduced charge)
Fixed cartridge with tracer
practice Shot (2)
U-41 2D
U-412B
1JBR,412
U0E-412
U0E-412U
UP-412
BR-412D
BR.4126
BR-412
OF.412
OF-41-2
HB-412
Full
Full
Pull
Full
.teduced
Full
MD-8 or DBR-2.
MD-8
MD-8
RCM-6, RGM.
RCM-6, RUM.
-
Notes (1) AP-Tracer Shells BR-41213
and BP-412 are fitted
with No.7 tracer.
(2) Such shells must only be
used for practice. The
head and cylindrical
part of the shell are
painted black.
(c) Handling and Preparing of Amaunition.
Inspection of amn. before stowage in the, tank, The crew receive the gun
rounds in 17 standard amn, packings. Before stowing in the tank, the condition
of the racks must be checked and then the rounds Checked, grease, sand and dirt
removed, sorted according to markings and weight, and stow them in the tank
through the itoaclaris hatch.
When stowing.
1. Rounds in whisk the RGM fuze striker cover is seen to be torn or punctured
when the fuze cap is removed, must be replaced.
2. Check that the fuze of the RGIti is set to "0". Rounds which have the
setting "Z" should be changed.
3, Check that the fuze has been screwed riciht home. If necessary, it is
permitted to screw it home (at a distance of 20-30 en from the tank) under the
supervision of an artillery technician.
In tanks it is forbidden to carry out any work on ammunition whatsoever, with
the exception of removal of safety caps, fuze setting, and casahingthe shell and
cartridge with a rag.
4. Rust on the centering band and driving band of the shell must be removed with
a brass scraper and a rag dipped in paraf in. Change any shells with dents.
5. Check that the shell and cartridge are firmly joined. If a shell is just
holding to the cartridge, but cannot be pulled cut by hand, it may be stowed in
the lowest tray of the main rack and used at the first opportunity.
6. Cartridges with cracks on the base or around the flange, or with big dents
Shonld be replaced.
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7. The primer *doh protrudes frem the base of the cartridge is screwed in with
a special key from the standard spare parts kit. However, if it is gunk more
than .5mm unscrew it, and set it flush with the base of the cartridge.
Preparation of ammunition ror firing and handling during firing.
i. Before loading the cartridge, wipe it with a rag so that the barrel does not
become dirty.
2. When firing fragmentation or BE, fragmentation shell set with the special
key the ROW Fuze corresponding to the given command. The fuze should be set on
only the next two or three shells prepared for firing.
3. Treat the shells carefully ? do not drop them. To fire a shell which has
fallen from a height of more than 1 metre, is forbidden.
4. When loading do not knock the RGM Fuze against the breech block, or the fuse
cap may be damage& If the cartridge does not go completely home into the
chamber, it is categorically forbidden to strike the base of the cartridge to tam
the cartridge into the gun. In such an event the wedged cartridge must be
removed from the barrel with the hand extractor and placed in an ammunition box:
the chamber must be inspected and Cleaned and then the gun may be loaded with the
next serviceable clean cartridge.
5. If there is misfire in the primer, switch off the electrical .firing gear
BS-11, wait one minute and switch on again. Re?cock and fire. If once again
there is a misfire, do not release the striker again but, having waited one minute,
open the breech and remove the cartridge. Load the gun with another cartridge
and fire.
6. If, after the removal of the cartridge the shell remains in the barrel, the
gun may only be unloaded by firing with a reduced charge. For this a shortened
cartridge (Ana. smaller) is used with a reduced charge: insert into the breech
and fire.
7. The shortened cartridge (one per tank), in weight 3/4 of the standard one, is
made at unit level from standard cartridges and normal charges, is kept in the
ranks and carried in the tank as laid down by the Main Tank Directorate (Garr).
Handling of shells not used during firing. Screw safety caps back on all
fused shells. Check that rounds with the PGE Fuze are set to "On. Such rounds
must be fired first at the next shoot.
Rounds Checked as above are laid neatly back in the racks.
Do not allow cartridges to (some into contact with battery terminals.
Disregard of this rule will lead to the explosion of the charges.
Geo. 6. Gun 1.411.1
(a) Preparation of the gun, for siring And movement.
Innpection of tha oul botoro firiva, Twore moving OPV 00 at bAttiO thilk Or
V 41 practice, the gun wait se inopeoted, The hers, ob0mber, bronoh guitles iv
0 Ureooh rin; and breech newt firet he olped free of gresme with 0 rag.
Inspect Wie liarrel from the inside and the outside. 3r oranke or bases arcs
diacovered the gun oust not be tired.
Take out the breech bloc*, atrip the striker mechanism. Wipe the parts
free of grease, dirt and dust and inspect them. Check with a gauge striker
protrusion. It should be between 2 and 2.30mm. If the firing pin protrudes less
than 2mm from the breech surface, the striker bore should be cleaned carefully with
4 wooden rod and rag. If after this protrusion has not increased, fit the spare
striker mechanism.
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Place the block in the guides, and, by opening and shutting the breech two or three
times, check the operation of the breech and striker mechanisms. In the case of
an unloaded gun the striker must be released without weakening the main spring.
If the breech closes sluggishly, carefully clear out the guides: if this
does not help, adjust the spring of the closing mechanism by screwing the adjuster
nut into the socket of the semi-automatic closing device.
Inspect the firing mechanisms, cock the striker and by pressing the hand firing
lever, test the firing mechanism.
Check the electrical and hand firing levers by the 3-way switch. The mechanism
should work in three different positions of the elevating handeheel. In all three
positions the electric firing switch should work reliably.
?
Check the movement along the recoil strip of the recoil indicator slider which
should move along freely.
Check the elevating gear. Release the gun from the travelling clamp.
Turning the elevating handwheel, epply maximum angles of depression and elevation.
If the handle moves stiffly, remove the dirt from the cylindrical cogs and toothed
arc.
Check the traversing gear. Release the turret clamp and check the operation
of the traversing mechanism by turning the turret through 360? right and left using
both electrical and manual mechanisms.
Check the 26h 2-22 sight. Check the fastenings of the pivot clamp to the
turret roof and the fastenings of the sight itself. The sight clamp should turn
freely on the pivot without rocking or sideways movement. Fasten the brow pad in
the holder in the required position. Check cleanliness of protective glasses, and
remove dirt and eust with flannelette. Looking through the sight, make sure that
the image of viewed objects, the graticules, sighting "inverted V's" and lines are
clear. Turning the knurled nut, check the movement of the sight carriage: the
end divisions of the sighting scale should reach the indicator line. Check the
serviceability of the night graticule illumination system, firstly switching on the
tumbler switch, "Optical Illumination".
Checking of recoil mechanism. Check the piston rod fastenings,. Ensure that
there is no liquid seeping from the packings or from the shut-off valve of the
recuperator. Before firing the recoil system must be checked.
Check the quantity of liquid in the recuperator and buffer, and also the
preosure in the recuperator. If necessary the amount of liquid and pressure of
nitrogen should be brought up to the required level: the amount of liquid in the
buffer up to 6.4 litres in the recuperator to 4.4 - 4.6 litres, and the initial
pressure in the recuperator to !,3-57 atmospheres.
To oboe): the amount of livid in the buffer, 'it the night ?lino, attaching it
to the guere mania., set at 4. 100 mile. Turning the elevating hanewheel, bring
the bubble to the centre, thus spplying to the gun an aryl* of elevation of 6?.
Uescrew the utopper from tho buffer eyilnder with koy if ljrujcj aupeara
In the eporter, then there eufrioicet in the buffer. if' it Mem not appeer,
oAd It in the following rottratari
Coliont Ihe liquid in m groan? gun, insert the end in the Aperture and adil the
until It flu's out or the apertlue. :exew up the atopper or the buffer
cylinder.
The drill for checking the Liquid in the recuperator is an follows:-
1. bring the barrel to a horizontal position.
2. Unscrew the valve top with key 42-52.
50X1-HUM
3. In the T-pipe recess screw in a T-pipe with a manometer so that the scale is
visible.
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4. CarefUlly unscrew the valve one turn with key (42-15) and Check the pressure
on the manometer. Close the valve.
5. Remove the split-pin on the end of the recuperator piSton nut, fit key
A52840-28 to it and, turning the key screw the nut onto the piston until the
graduation line on the piston coincides with the face of the nut.
6. Screw on to the end of the recuperator piston the screw of the lieuid
determining device L12-411), place the pipe on the screw, and tighten the nut of
the device.
7. Place a tap wrench on the net of the device and, turning it, release the
recuperator piston 110mm, so that the graduating line on the screw of the device
coincides with the face of the nut.
8. Unscrew the valve and check pressure on the manometer. Tighten the valve.
9. By the readings on the manometer (initial pressure and pressure when piston is
released 110mm) work out on the graph attached to the guard shield the amount of
liquid in the recuperator: find on the graph (fig. 42) the intersection point of
the horizontal and vertical lines: the horizontal lines being the initial pressure
and the vertical lines the pressure with the pressure released 110mm.
If the point of intersection lies on the middle line or between the middle line
and ore of the adjoining parallel lines, then the amount of liquid is inside the
limits. (4.4-4.6
If, however, the intersectien point lies higher than the top niagonal line,
the liquid in the recuperator is above the limits and if it. must be decreased if
below the line, liquid must be added to that in the recuperator.
To reduce the amount of liquid in the recuperator:-
1 Apply en angle of elevation of 50-100 to the gun.
2. Without removing the T-piece, unscrew the cap on a branch of the T-piece a
couple of terns.
3. Place a litre jar. under the branch of the T-piece. Carefully unscrew the
valve half a tern and release the surplus liquid into the jar. .crew up the valve
and test again as shown above.
To add liquid to the recuperator using the dual-action rump:-
1. Join the screw of the device to the eecuperator piston.
2. Return the recuperator piston to the run-out position, joining with key
A52840-28 the nut with the piston so that the apertures in the nut and the piston
coincide: then join them with a split-pin.
3. Apply maximum angle of depression to the gun.
4. Join the cap with the branch of the T-piece.
5. Unscrew the valve a half-turn and release part of the nitrogen, bringing the
pressure in the recuperator to 30-40 atmospheres. Close the valve.
6. Screw out the manometer from the T-piece and screw in a Stopper. Disconnect
the cap from the. other branch of the T-piece and connect to it the tube of the
pumo.
7. Pour into the pump reservoir the measured amount of lionid (as per the graph).
Set the tap of the pump to "Liquid" and prime the pump so that liquid enters and
fills the eube.
8. Unscrew the valve one or two turns and pump the liquid from the pump into the
recuperator. Close the valve.
9. Unscrew the stopper from the T-piece branch and insert a manometer.
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a nitrogen cylinder. Carefully open the cylinder tap.
50X1 -HUM
11. Unscrew the valve one or two turns and, watching the manometer indicator,
bring the pressure in the recuperator up to standard (53-57 atmospheres). Close
the valve and cylinder tap.
12. Remove the cylinder tube from the T-piece and screw back the cap.
13. Re-check the liquid in the recuperator by the graph, and if it is within
limits, disconnect the manometer and T-piece. In order to provide a hydraulic
nitrogen resistance in the recuperator, set the gun at angle of 10?-15? elevation,
unscrew the valve half a turn and when liquid appears in the T-piece recess,
quickly close the valve.
14. Screw on the caps.
To add liquid to the recuperator using the NVG pump (52-1-035) (fig.43):-
1. Join the screw of the device to the recuperator piston rod.
2. Return the recuperator piston rod to the run-out position, screwing up the nut
on to the piston with key (A52840-28) until the aperture in the nut coincides with
that in the piston rod. Then split-pin the nut.
3. Mount the pump on top of the cap of the front (internal) fuel tank, thus:-
- unscrew two bolts of the cap fastener and remove the front (internal) fuel
tank cap.
fasten with bolts the bracket of the pump in its nlace.
- fit the pump into
the guide bracket.
4. Unscrew the manometer from the T-piece and replace it with a plug. Disconnect
the cap from the other branch of the T-piece and joint up the pump tube.
5. Pour into the reservoiri-themeasured quantity of liquid and lower the inlet
tube of the pump into it: set the pump tap to "Liquid" and prime the pump so that
the liquid fills the outlet tube.
6. Unscrew the valve one or two turns and pump the liquid into the recuperator.
Close the valve.
7. Remove the tube and plug from the T-piece and screw on the cap and manometer.
8. Check the amount of liquid against the graph. If the amount is within the
limits, unscrew the T.Tiece with the manometer and make a hydraulic resistance in
the recuperator as shown above.
9. Screw on the valve cap.
10. Remove the pump and replace the front fuel tank cap.
To check the pressure in the recuperator:-
1. Lay the gun in the horizontal position.
2. With key 42-52 remove the cap from the cylinder bottom,
3. Screw the manometer into one branch of the T-piece, and then screw the T-
piece into the recuperater cylinder recess.
4. With key 6b 42-15 carefully unscrew the valve a half-turn And check the
pressure on the manometer scale. Close the valve. Norval pressure in the
recuperator should be 53-57 atmospheres. If the pressure (with a normal amount
of livid) is less than that, nitrogen must be added
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SECRE411
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To add nitrogen to the recuperator from the cylinder:
1. Remove the cap from one branch of the Tepiece and join up the tube from the
nitrogen cylinder. The end of the tube is connected to the charging point 41-260
of the cylinder.
2. Unscrew the shut-off valve one or two tarns and carefully turning the knurled
nut, open the cylinder tap, Watch the manometer indicator and bring the pressure
in the recuperator to standard (53-57 atmospheres).
3. Close the valve and cylinder tap and disconnect the tube from the T-piece:
replace the T-piece cap.
4. Screw out. the T-piece with the manometer and screw in the caps.
To add nitrogen to the recuperator using the pump NVO (52-I-035):a.
1. Remove a cap from the T-piece and connect the tube from the pump (first having
set up the pump as described above).
2. Set the pump tap to "Ale, unscrew the valve one or two turns, and pump in
air to the required standard (observing the manometer indicator).
3. Close the valve, disconnect the tube of the pump and, replace the Cale. Screw
out the T-piece with the manometer. remove the pump and replace the petrol tank
cover cep
If pressure in the recuperator is more than the required standard (with the
normal amount of liquid), then the surplus must be released.
To release surplus nitrogen (air) from the recuperator:-
1. Apply maximum elevation to the barrel.
2. Without taking off the T-piece with the manometer, release a cap on the T-
piece a few turns.
3. Open the valve a half-turn nnd release the surplus nitrogen observing the fall
of pressure on the manometer scale. (If nitrogen comes out mixed with liquid,
the tank must be moved so that the front is lower than the rear.
4. Having released the surplus nitrogen close the valve, unscrew the T-piece with
the manometer and screw in the caps.
Each time nitrogen is added or released from the recuperator a hydraulic
resistance must be formed (as shown previously above).
Until this hydraulic resistance has been formed, it is forbidden to work the
elevating mechanism and especially to set angles of depression on the gun, to
avoid losses of nitrogen from the recuperator.
NUIZS
When checking liquid in the recuperator it is permissible to use instead of
tool sb 42-411 the tool for pulling back the barrel gb 42-102, with which the
latest issue of guns is equipped. For this, having checked recuperator pressure
(run-out pressure) screw in one end of the ab 42-102 in an aperture in the breech
ring, having unscrewed the plug, and fasten the other end to the turret.
Turning the tap wrench of the tool, pull back the barrel 110mm. On the
latest issue guns there is a graduated line marked "110%
Pull beak the barrel until the rear face of the breeching coincides with the
graduated line.
In this position check pressure in the recuperator, and using the graph as
above, check the liquid also.
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Testing of bight 1Sh
To engage with aimed fire it is essential that the zero sighting line is
parallel to the axis of the bore. This is achieved by testing the sight for
height and direction. The sight is tested on a distant abject or testing board.
Distant object method:-
1. Arrange the tank on a level platform without longitudinal or lateral slant.
2. Select a point of aim, 1000m away.
3. Stick a cross-wire of 2 threads over the mu7zie face on the marked lines.
4. Remove the striker mechanism from the breech.
5. Turning the sighting knob, bring together the zero division of the range
scale and the horizontal indicator line.
6. Looking through the striker aperture in the breech, bring the crosswires on
the muzzle face on to the selected point of aim, using the elevation and traverse
mechanisms.
If the sight is oorrectly fitted, the top of the central (large) inverted fir'
will coincide with the point of aim.
If the inverted IV" is cAsplaced left cr right in relation to the point of
aim, then adjust it for direction by turning screw (3) (fig. 27) with the key (6).
If it is displaced up or dawn in relation to the point of aim, then by turning the
nut (15) of the sighting gear, bring the top of the central inverted 'V' to bear
on the point of aim and then by turning screw (5) with key (6), set the horizontal
wire an the zero divisions.
When visibility is bad or at night the lah, 2-22 sight is checked with a sights
testing target (fig. 49), which is set up after testing the sight by the distant
Object method and zero-ing the M.G.
?hen testing the sight by the sights testing target, set it 1139 20 m from the
muzzle face of the barrel so that the horizontal line coincides with the cross
thread in the field of view of the sight or is parallel with it. The cross-mire
on the muzzle-face Should line itself up on the mark for the gun, and the top of
the central invt:rted 'V' of the sight must coincide with the sight mark, as when
testing the sight by the distant object method.
(c) Transferring the gun from the travelling position to the fighting
position, and gun handling when firing.
The gun is moved from the travelling to the fighting position on the comdts
order: "Action".
The drill is as follows:-
i. Take off the covers from the muzzle and breech of the gun, from the sight
Tait 2-22, co-axial NE. and hull MG and remove the plug from the aperture in the hull
front plate.
2. Free the moving parts of the gun and turret (unclamp).
3. Close and lock all hatches.
50X1-HUM
SECRET ?
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gr_
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SEMET
4. Switch on the turret lighting and sighting gear and electrical firing switch.
5. Push the recoil indicator Slide as far forward as possible.
6. Set sights to zero.
7. Raise the collapsible recoil guard from the vertical to the horizontal and
fit the folding campander's recoil guard.
8. Open the breech by hand.
9. Load M.Gs,
10. Give the 'ready" signal.
11. Watch for the sender comd's signals.
To load:-
i. Lift and turn the breech lever towards you and to the left, and then tarn it
in the other direction and press on the breech retainer catch - the breech will
open.
2. Insert the round into the chamber, and ram it home sharply: the breech will
close automatically.
3. Press on the loader's safety switch and report ready.
Laying the gun is achieved in direct laying by using the TSh 2-22 sight and
in indirect laying by using the turret traverse azimuth ilvdcator and the sight
cline.
During direct laying the tank comd, having given the order to fire, indicates
to the layer the shell to be used, the target direction, nature of tgt. range and
method of fire.
Horizontal laying is achieved by traversing the turret. The turret may be
traversed by the. layer with the hand or electrical traverse system, and also by the
comd using the coma's traverse system (see chap. "Electrical Eqpt. of the Tank" for
details).
Vertical laying is achievedtrusing the elevating mechanism of the gun.
Laying is carried out in the following sequence:-
1. The tank comd, traversing the cupola, directs the TPK-i device on to the tgt st
that the central (verttoal) graduations of the mirror and head prism or
wires of of the eye-.piece coincide with the centre of the tgt, switches on the button
on the handle of the periscope and simultaneously gives the order to fire,
2. Wbile the turret is turning, which it started to do when the button was
switched on, the tank comd holds the periscope on the tgt until the turret ceases
traversing. He then releases the button.
3. The layer, turning the knurled knob of the sighting mechanism, moves the sight
graticules and brings together the division corresponding to the range to the tgt
and the horizontal indicator line. The angle is set on the 'ER' or tar scale
according to the chosen charge (full or reduced).
4. Turning the handle of the traverse gear (or turning the traverse switch) and
the elevating hand wheel bring the top of the central inverted 'V' on to the point
of aim, if the laying is to be direct and without applied lateral corrections. If
lateral corrections are to be applied, the layer brings together the point of aim
and the top of one of the inverted 'V's or one of the Short lines to the right or
left of the central inverted eV, depending on the size and direction of the
correction.
SECRET
4Nt
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Indirect fire is used when firing from concealed positions and when the tgt
is not visible through there 2-22 sight. Having noted the data on the turret
azimuth indicator and the sight clino e.g. 3244.0 and 1-45, the target may be
engaged using the data of the azimuth indicator, the sight cline and range tables.
Firing 50X1-HUM
Firing drill is as follows:-
1. Switch on fans.
2. Check the point of aim.
3. Press the electrical firing switch or firing lever, having reported "Shot".
If a round is not fired when the striker is released, the loader must:
1. Wait not less than one minute and break the circuit with the BS-11 switch.
2. Hiving received permiesion from the layer, re-cock.
3. Report "Ready".
If there is still no round fired when the striker is released again, wait one
minute, open the breech and change the round.
Note: When engaging enemy tanks in the event of a misfire the round is changed
after the first release of the striker. Safety preoeutions are observed.
Unloading.
When the tank comd orders Cease Firing a loaded gun must be unloaded.
It is forbidden to move with a loaded gun.
To unload:-
1. Open the breech sharply.
2. Remove the round and place it in the rack.
3. Close the breech.
Note: If when unloading the cartridge and charge 001I4 out, leaving the projectile
in the chamber, the gun may be unloaded by firing the round with a reduced charge
in a specially shortened cartridge (see section 'handling of Amn. and Preparation
for Firing").
:'iring eafety Precautions
1. Do not move behind the recoil guard, to avoid blows from the recoil system.
2. It is Obligatory to wait one minute in the event of a misfire and then to
re-load. (This is to avoid an accident caused by a hang-fire).
3. If recoil exceeds. 570 mm. cease firing, check the system, ascertain the cause
and remedy the fault.
4. Cease firing if knocking is heard from within the recoil cylinders during
recoil of the moving parts.
5. In winter when the air-temperature is low, the first 2 or 3 rounds (warmers)
should be fired with reduced charge.
(d) 1..aintenance of the Gun.
In battle and after range practice, maintenance consists of cleaning,
inspection of the parts and mechanisms, and oiling.
50X1-HUM
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SECRET
On a normal inspection check:-
- operation of the elevating mechanism, traversing mechanism, and turret clamps.
- electrical firing switch.
- covers and cover fastenings
- amu. racks and round fastenings.
On technical servicing No. 1 check:-
- serviceability of racks and round fastenings
- serviceability of electrical firing switch:
ensure the gun is unloaded, and setting the striker on to the sear, release it by
pressing the button or lever.
- ease of movement of the hand wheels on the horizontal and vertical laying
mechanisms. If the turret traverse handOheel is tight, clean the cogs of the
driving gear and the cogs of the lower race ring, oil withIMATTii-201. In hot
dusty conditicns lightly oil with gun oil and if required wash out the race ring.
condition of the chamber andLboxe41:
if necessary clean and. oil.
On Technical Servicing No. 2 carry out all No. 1 tasks as above and in
addition check serviceability of turret clamps.
On Technical acrvicing No. 3, carry out all No. 1 and 2 tasks and in addition oil
the cogs of the traversing gear of the turret (the electrical mechanism).
Moving to the Travelling Position. The gun is moved into the travelling
position on the order of the tank comd "Cease Iiiring". The drill is as follows:-
1. Unload.
2. Clamp the turret and moving parts of the gun.
3. Unclamp and lower the recoil guard.
4. Set the _TS12 2-22 sight scale to zero.
5. Eet the recoil injicator slide to the forward positien.
6. Carry oit an oxternal inspection of the tank.
7. Switch off the tumtler switches on the sight, electric iring switch and
turret illumination.
8. Covers on.
9. keport on the gv2 conOition (length of recoil and amn. expenditure).
Cleaning the Gun
In battle gun cleaning is done on the orders of the comd depending on the
battle situation,. in ad(...ition, the gun is cleaned after firing, a march,
exercises involving its use and for inspection.
clean the gun after firing.
1. Oil the bore with gun oil while the gun is still warm (the oil softens the
carbon deposits ar.e.. iacilitates its removal). Sind a thin rag round the sponge
brush alld liberally cover with gun oil. Introduce the brush into the barrel and
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g0X1-HUM
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2. Clean the outer surface of the barrel with raga and if they are excessively
dirty, wash dawn with? water (breech with parafin or diesel fuel) and than wipe
carefully.
3. 2-3 hours later (when the carbon has softened) remove the oil from the barrel.
Open the breech, twist a rag into a wad, soaked in parafin or diesel fuel, and
push the wad. along the barrel with a pole from the muzzle end.
4. Wash out the barrel. Push a wooden plug wrapped in rags into the chamber
and apply a small angle of elevation. Pour soapy water or parafin into the barrel
and clean unit with the sponge brush for 10 minutes. Use 1-1.5 litres parafin or
5-6 litres of water with 50 greats of soap.
Wash the barrel twice with parafin or three times with soapy water. If
parafin or soap are not available, clean hot water may be used, but must be changed
5 or 6 times. When changing the liquids, depress the gun, pour off the liquid
and then wash out the barrel again as indicated.
5. Pour off the liquid, remove the remnants of it from the barrel, depressing the
gun and removing the plug and wiping out the barrel.
6. "Pull Through" the barrel. }ass a wad tightly bound with clean dry linen
cloth 5 or 6 times through the barrel.
Wind the cloth ctrip around the middle of the wad two or three times. Wind
the upper layer lightly into a cone and fasten it with a thread. The linen wad
must be of such a thicialess that it takes not loss than 6 or 7 men to force it
through the barrel. To pull through the barrel quickly and cleanly, ensure that
the strip is not wound along the whole wad (the strip must be shorter than the
wad). If the wincing slips or jams, re-wind. If a hydro sponge is available,
the oil may be removea and the barrel pulled through with it after mshing
(sponging through;. This Cooes not Change the sequence of cleaning.
7. Ensure that the barrel is clean. Pass alon7 it a test wad with a tightly
wound clean, dry, white cloth. If traces of carbon remain on the cloth, continue
dry Cleaning: if it is -Oakay ma...ked, re-start washing.
Remember that the - the INrrel is the basic metYcrl of cleaning it.
8. Carefully clean the cilareily,r, br,lech ,,uides, test clino surface, nn u all
grooves angles and hollows where dirt mai gather. Use for this a rag, parafin
and wooden rods of varivros saps with r.harpen& points.
To clean t-e breech it must he taken to pieces an:. each part wiped clean aith
a dry rag. To remove erbon :7.om striker mechanism parts an the front surface
of the breech piece, wipe L.itially with rarafin rags and then wipe off with a dry
rag.
To clean the Taoving ,,ILrts, clean the cradle, breech ring, recoil ;:ystem, gears
and arc of the clevati.:: mecear.ism.
To Clean the 1Sh 21-22 it must he wiped with a. dry, clean rag, seeing that the
lenses are not Ecratchcd or da:laged. Ieemovv.: dust and grit from the lenses and
then wipe them with Zlos:Jelette.
7:s ection after
After cleaning the gui. is iLspecteu with the aim of finding and remedying
faults. The sequence is as 2ollows:-
1. Establish by ilternal ii e:ct.!rnal inspection that there are no dents, cracks,
bulges, burrs on the lands of the rifling: is the barrel firm, and what is the
condition of the breech ring ami char,b_r?
2. According to the recoil indicator slide (during firing) and by external
inspection of the recoil system, ascertain whether the 1.1uffe," and recuperator
50X1-HUM
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SECRET
must be checked, whether liquid is escaping, and whether the recoil system
fastenings are broken.
3. Having inspected the breeoh mechanism parts, ascertain whether they are
distorted, worn, or cracked: whether springs have broken, and whether the
fastenings are in order.
4.. Ensure that the sight fastenings an the pivot mechanism clamp and bracket
are firm.
Greasing
The gun is always greased after cleaning..
To preserve the gun and protect its mechanisms the following lubricants are
used: gun oil, oil AF-70, and spindle oil AU.
Gun oil is used for long term preservation of all the metallic parts from
rust. Oil AP-70 is used for short term preservation of all metal parts from
rust for about a year. Spindle oil is used to lubricate the gun mechanisms mixed
50a15q0 with gun oil.
Barrel greasing is carried out in the fellowing sequence.
- grease the barrel: use a clean dry sponge brush wound with a well greased
clean fine rag and pass it 4. or 5 times through the barrel. See that the grease
is spread evenly over the length of the barrel.
- grease the chamber using the same grease rag and one section of the sponge.
- wipe the breech guides of the breech ring lightly with a clean rag soaked in
oil.
The breech is oiled with a clean rag soaked in oil. .ismantle the breech
and oil all the parts: re-assemble and check the operation of the mechanisms.
It is essential to remeMber that thick oil clogs the mechanisms.
The cradle is lubricated with the oil can of spindle oil AU. The cradle
.gnides and the machined sliding surface of the barrel are oiled. When dismantling
in summer the cradle is oiled with gun oil, end ia winter with a 50, /5q. mixture
of gun oil and spindle oil.
The arc and cylindrical gear of the elevating mechanism are lubricated with a
rag soaked in oil. In addition all paint-free surfaces of the gun and places
where the paint has worn away should be oiled. -aainted surfaces will not be
oiled.
Gun History sheets
A gun history sheet is a document giving the life history of the gun. r'irst
drawn up in the factory, it is an indispensable part of the gun and must accompany
it in all eireematances, whether in peace or war.
The sheets are kept in the form of notes translated into graphs giving data
concerning
- use of the gun in units.
- nature of repairs.
- noted production and construction faults.
After firing and inspection the followina facts are entered: time of firing,
number of rounns fired, and charges used.
Details of repairs and damage, and what action was taken to remedy it, must
be explained in notes. All entries will be in ink and will be clear, tidy and
made at the relevant time.
SEChET
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Nature of Fault
or Stoma
%...atuza
50X1 -HUM
On loading the
breech does not
close or closes
sluggishly
Breech does not
open after firing,
Cartridge ejects
sluggishly.
Cartridge does
not eject.
Breech will
not stay in the
left (open)
position.
4..
THE BREECH
Cartridge not chaeber gauged
or dented, bulges on the
cartridge lip, Shell set
aslant in the cartridge,
primer protruding, bulges on
the driving band.
Chamber dirty and cartridge
only partially enters.
Weak ramming
Thick grease on the guide
grooves and ribs of the
breech rings dents or
bulges on the working surfaces
of the breech piece or breech
guides.
Closing mechanism spring
weakened or broken
. Extractors bert.
? The plunger of the opening
mechanism has not returned to
its extended position because
of: - dirt or scratches in
the bearings.
- heavy friction between
plunger and guides.
- weakening or breakage
of the plunger spring.
. Broken firing pin jammed or
cartridge base buckled
. Scratches or dents an the
breech working surfaces.
. i-,etaiuing catch jams, and
plunger passes under it on
run-out, not striking it.
Sluggish run-out.
1. Expanded cartridge.
2. Carbon neposits or residue
in the chamber.
3. Worn extractor catches.
1. Uorn extractor catches.
2. Sagging or breaking of
extractor detent catch
springs.
Change the round.
Remove carbon deposits and oil
remnants, wipe with rag.
Ram energetically.
Remove the breech piece. Remove
surplus grease and dirt, clean
out dents with file and glass
paper.
Compress spring with adjusting
nut: if this does not help,
replace spring.
Replace.
In all cases return the plunger by
hand: do not cease firing.
After firing, if there is dirt on
the bearings, remove it: if
scratches, clean and oil the
bearings and plunger: change the
weakened or broken spring.
remove striker mechanism: allow
cartridge case to cool and try to
open breech. If -ot, apply a
wooden rod to the breech piece and
strike it with a hamner,
simultaneausly eryeavouring to
open the breech .rith the LBM.
Op en breech as above.
Clean out scratches with smooth
file.
Inspect catch, remove dirt, and
oil.
Check recoil system and remedy
faults.
remove cartridge with screw
extractor, screwing the end into
the primer recess.
.emove cartridge as above.
Clean chamber.
Replace extractors.
Replace extractors.
neplace springs.
50X1-HUM
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SICRIT
Nat ore of Fault
er Stoppage
Kisfire.
Electric Firing
switch does not
work.
WS*
Remedy
? If firing pin has left a deep
mark, primer faulty.
. If mark faint, then striker
mechanism dirty or faulty
(firing pin burred, main
spring weak).
Firing Niechanism Faults
1. Wire disconnected or relay
faulty.
2. Fuze blown.
3. Firing mechanism requires
adjustment.
4. Carbon deposits on the contact
r3ng.
Change the cartridge.
Remove striker mechanism.
Remove surplus area se.
If this does not help; replace
faulty parts.
Fire by hand lever.
After firing, replace fuze.
After firing, adjust.
Clean ring.
collapsible part
of guard will not
stay in fighting
position.
Elevating pear
works stiffly
!:levating mechaniel
gives' when round
LS fired.
kecoil Guard .s'aults
Guard clamp spring broke*.
Elevating Uechanisra Faults,
? Teeth.of the elevating arc or
cylindrical gear dirty.
? Burrs on the teeth of the arc
or cylindrical gear.
priic _rigs broken or weakened.
Continue firing with guard dropped.
Replace spring after firing.
Clean arc and gear.
.,emove the projecting parts with a
smooth file.
with sca.11 'give' not affecting
accuracy of ]'ire, continue firing.
After firing covpress the o'isc
s171-ins, turning, the nut not more
than _;,' 4_ of ,7. turn f'rorn t:)e position
in which t:e gra, :uatir.E,- line On the
rii:t coinci?Les zdth the centre of the
line on the bush.
If mechanism still gives, change
V e Cisc springs, turning the nut
as s'nown in the section ?1:dsmant1ing
Etr. ? assembling of the elevating
mechanism" (Gun drill procedures).
Liquid seeps
through packings
of buffer anu
recuperator ui6ton
ros.
Ldaui seeps
tru_L.,1! of
'14
a
111111111111111r7i
//
...
1
? .
_

r-1 r
4
Liquid in litres
e:
8
0
2
54
62
lia9aAamoe Aasaebtkia a Haas tpibirie?
Liquid less
than normal
PRET.
50X1 -HUM
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Fig 43. The NV G 52 I 035 pump mounting.
1. Bracket
2, Pump
7
50X1 -HUM
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7.:;1?1
06.4-
*V- =7:
;???-; 4
? ,Ao',V-043.1
2r:??,?'?
50X1-H UM
? ,?',K ??;?..2ri
0rof?Itit'-on on ..Wht roat
SEPIrIT
50X1-H UM
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50X1 -HUM
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Fig 46. The SGMT oo-axial MG
1,2. Protective plates from lead fragments
3. Shook absorber bolt
4. Shook absorber front spring
5. 'tont slide
6. Frame
7, Bracket
8. Front stand
9. Bolts
10. Spent cartridge case holder
11. Holder jacket
12. Adjusting meohanism collar
13. Adjusting mechanism screw
14. near stand
15. Pin
16. Rear slide
17. Gable
18. Rest
19. Rear shook absorber spring
SECRET
50X1 -HUM
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50X1-HUM
Fig 47. The SGMT hull MG.
1. Rubber plug
2. Shield
3. Magazine opening cover
44 Cable
50 Bracket with rollers
6. Cable
7. Aear slide
8. Pin with ring
9. Tarpaulin sleeve
10,13. Strap
110 Bucket
12. Magazine-box
144 Bolt
15. Front guide
16. Front slide
17. Shock absorber
18. Bracket
19, Cocking handle
20. Spring
21. Barrel extension piece
7:CRET
50X1 -HUM
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Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
ri0.1011mAwi1inor)w.f
clumwoomilmomP
hiOupriM
mcintmcilm
Odipmvmh.1U
roww
no.wviu
Point of vim-
10
'it' fru trntr()'itfil
iiLULIIJLLLLL(J I1&P 9(1H
-,y?
Check point.
Accuracy limit
automatic fire.
Accuracy limit.
single shots.
Fig. 48. Zeroing target for the co-axial SGMT MG.
50X1 -HUM
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Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUM
?I g.
Sight nvlek
piJint of
ctik?zero t
.Ac1st,1tant line.
SECRET
pc)i:tt
50X1-HUM
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Declassified in Part - Sanitized Copy Approved for Release 2013/02/26 CIA-RDP80T00246A028600720001-5
44. w.ght bracket
? Slide 45. Cradle
, Cradle clamp 46. Bracket
Lid 47. Coupling and spring
Rear wall of sight box
Lensatic sight
? Tangent sight
Firing trigger
Collar
O. Cable
. Trunnion
2. Swivel
3. Floating plate
4*--Horizontal laying handle
It-Swivel clamp
qt.ilFork clamp
71.1..i Key
S' Locking screws
9. Fork
0. Magazine bracket
1. Small spring of the balance mechanism
2. Lug
3. Balance mechanism pipe
4. Shook absorber spring
5. Large spring of the balance mechanism
6. Piston rod
Shock absorber guide bolt
Magazine box
Lensatic sight box catch
Locking bolt
Upper sight bracket
Regulating screws
Locking bolt
Socket
Clamp bolt
36. Key
37. Collar
38. Handwheel
39. Tooth gear
40. Arc
41. Cocking handle
42. Right fork bracket
43. Left fork bracket
50X1-HUM
50X1-HUM
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;. MG
2, Slide
3. Cradle clamp
.14.. Lid
5. Rear wall of sight box
6. Lensatic sight.
-;? Tangent sight
1. Firing trigger
9. Collar
10, qable
11. Trunnion
12. Swivel
5.
6.
7.
28.
29.
30.
51.
32.
33.
34.
35.
13. Floating plate
-IL. Horizontal lay4mc
15. Sr,ivel .1111
-1%rk
Locking screws
Fork
20. MzgAzine broket.
21. Small spring of the balance mechanism
22. Lug
23.2nlanoe
24. Shock absorber spring
if.;
;ILZ
Large spring of the balance mechanism
Piston rod
Shock absorber guide bolt
Magazine box
Lensatic sight box catch
Locking bolt
Upper sight bracket
Regulating screws
Locking bolt
Socket
Clamp bolt
36. Key
37. Collar
38. Handwheel
39. Tooth gear
40. Arc
41. Cocking handle
42. Right fork bracket
43. Left fork bracket
44. Sight bracket
2.5. Cradle
46. Bracket
?
r
47. Coupling and screw
1-5
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50X1-HUM
50X1-HUM
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Fig. 51. Zeroing tar?.;et for the AA n DahK.
Point of aim on .
tangent sight with
sight '4'
50X1 -HUM
Check point.
50X1 -HUM
Limit of accuracy
and spread for (check circle).
Protimponetran
frr0,11( 0
rodapum Kyvnocnit:
u memKocmu clop fly-
-r nemejna(tforimponb-
lfblU npyz)
I V)
LC
(:)
N, Z,
1 i Tovrco npuqenu
eantiR no manful-
,?mamoptiomy tuni?
Towca nputienulatiuR ueny
_---no pamognomy npuye- \
Ay c nputonom ?4 _9O0
'4-
YCITIGINV804M151 zopuoommanbriaR \
PUNUA
Horizontal adjustment line.
point of aim by
lensatic sight.
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
T? 1 ? 5
(7,heck-zero to'
? ,? f,
ttf t.) 1,111 tta !Ult.! ?
if; ,7140.74) ;:o
qg4t *10 Z1,1700t2 or tor
mtooll nymamamo
14"?.7rovira otoup000mmi On
kumov mew 11puue,30.
50X1-HUM
.1-uiclt of ror 50X1-HUM
nt of through
W
11, Itr.1?
WAWNWOMMC
teZraxpeimilmit igoaArmam,:fao it6E,UP
r-
. .
of aim by
LLine.
cri
czi rd.
-y.:ck in in hia;tor
TTit j
No- .ith K.1)-T
7*.r.c9J Lt.
, nd..a... ....
r--nprr
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release
2013/02/26 : CIA-RDP80T00246A028600720001-5
4?
Declassified in Part - Sanitized Copy Approved for Release
2013/02/26 : CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUM
DOCUMENT "A-1"
(MISCELLANEOUS DOCUMENTS)
BOOK OF DIAGRAMS
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Fig. 1. GENERAL VIT-EN OF THE SICq-IT
1,
2.
Headpiece.
Swivel mechanism.
3.
Magnification Change mechanism
body.
50X1 -HUM
4.
Ocular piece.
5.
Sighting angle mechanism pilot
wheel.
11.
Electric heater contact.
14..
Magnification Change handle.
15.
Universal jointed shaft.
17.
Forehead piece bracket.
18.
Collar.
19.
Light filter ON/OFF switch.
91.
Rubber forehead piece.
92.
Screw adjusting key.
92
50X1 -HUM
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Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A02860072000175
Fig 2. a NERAL VIEW ( frcm right)
6. Pin;
7. Screw recess of the alignment control;
8. Screw recess of the height control;
9. Adjusting screw;
10. Right angled shaped tooth;
12. Electric bulb contact;
13. Rubber leaf;
16. Tongue for the key;
18. Collar.
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A02R6on77nnni_c
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Fig. 3. OPTICAL LAYOUT OF
20. Protective glass.
21. Objective.
22. Plane parallel plate
23. Condenser.
THE SIGHT.
50X1 -HUM
50X1 -HUM
(grid).
24.
Mirror.
25.
Mirror.
26.
Mirror.
27.
Mirror.
28.
29.
Viret turning lens.
6econd turning lens for 3.5x and 7x 90
magnification.
30.
Lizht filter.
31.
Planoconcave lens.
32.
Eye-piece lenses.
0 0'
Z3
ZZ L.\4,
Zr
Li.
1:14
- del -74
28
V y
ezz mom
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
nanm 412A
,s/rpkr pskr
A' ' 'A' ' 'A' 1511-11
? 2
?
? 20
? ? 8
17 ?
?- /8
15-
-- At
ii-
-- a
8-
6
4
r
k
12 16 2(1z 18LLJJLI
-
I
Fig. 4. Scales of the T3h2 -22 3ight.
BR GT
472D T.
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Declassified in Part - Sanitized Copy Approved for Release 2013/02/26 CIA-RDP80T00246A028600720001-5
' i INIUM/ZJII
? /004,?????00 .
11111111111111111MIMMA
WI% ? gr--
d. 4
5.
Sighting angle mechanism pilot wheel
41.
Screw
54.
Spiral spring
15.
Universal jointed shaft
42.
Carrier with grid
82.
Axis
31.
Lenz
44.
Axis
83.
Parallelogram
32.
Lenz
45.
Tube
84.
Spiral spring
33.
Cam
46.
Plate
85.
Screw
34.
Cam axis
47.
Rush
86.
Holder
35.
Spiral spring
48.
Half collar
87.
Holder
36.
Flat spring
49.
ball
88.
Eye piece tube
37.
Conical pinion.
50.
Pin
89.
Cylindrical collar
38.
Conical pinion
51.
Screw
90.
Rubber "Blinker"
39.
Conical pinion
52.
Universal jointed section
40.
Conical pinion
53.
Coupling nut
Figi5. Section of the Sight
nnrnved for Release 2013/02/26 CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26 : CIA-RDP80T00246A028600720001-5
R.* t?T 121. 12
eas piece of the sight (view from the
50X1-HUM
carrier side).
42. Carrier with grid
55. Carrier
fin
56. Spiral springs
60. Flat spring
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Section along AB
Pa3pe3 no AB
Fig 7. Mechanism for direction alignment of the sight.
57. Worn
58. Cogwheel
59. Cam gear
4
50X1-HUM
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Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUM
Fig 8. Carrier of the horizontal thread
43. Carrier
61. Spiral springs
64. Wedge
V
Fig 9. Height alignment mechanism
43
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5 _
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Pig 10.
Head piece of thP i
11.
20.
Utditdtv
Protecti
?? VI :17Z
66.
Spiral
50X1 -HUM
67.
Contact
50X1 -HUM
68.
Bracket
Olaf)
20
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Fig 11. Head piece of the sight.
50X1 -HUM
13. Rubber leaf
,Y9. Recess
70. Housing
71, Shaft
NOFORN/NO DISSEI,1.,';:j/"L:T.IiTED/BACKGROL!.:ND USE ONLY
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Fig 12. Swivel mechanism
72. Housing of the forward joint
73. Housing of the rear joint
744 Plate
76. Cylinder
77. Screws
50X1 -HUM
50X1 -HUM
Atka
?
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Pig 13. Section of the swivel mechanism.
50X1-HUM
24.
Mirror
72.
Housing of the forward joint
25.
Mirror
73.
Housing of the rear joint
26.
Mirror
75.
Housing with_lateral mirrors
r.
Mirror
78.
Spring
50X1-HUM
?
4
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
a
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUMj
Fa
-1. IC 0 Lhe change over turning lens
29. Leas
79. Lens holder (inner)
80. "Eccentric" collar
Cl. Holder
82. Axis
"nllET
50X1-HUM
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Fig 15 Layout of the arrangement
9. Adjusting screw
18. Clip
94. Bracket
95. Bolt
97. Bolts
96. Support
98. Boss of the cradle of the gun
99. Bolts of the direction alignment
100. Bolts of the height alignment
101. Bracket
102. Guiding tube
103. Extensioh rod
104. Connecting pin
105. Bolts
106. Screw
of the
sight.
50X1-HUM
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Fig 16. Modified hinged suspension support.
18. Collar
167. Bracket
108. Brace
109. Link
Bolt
Upper pin -
Lower pin
18
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-H UM
- ?
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
tkoLutai f
'A' I 'A
View through sight
View through the bore of the barrel
50X1-HUM
Fig 17. Position of the scales and the central square
of the aligned sight and the crosswise on the
muzzle face.
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-6
Fig 26. Layout of the arrangement of the trigger mechanism.
9. Washer ( 10-188)
15. Washer ( 10-199 )
29. Firing lever (02-60)
A. Clearance between the RT-9 core and the edge of the clamp
b. Clearance between the upper edge of the clamp and the firing lever
RT-9. Electromagnet
B. Shoulder
K. Shoulder
SECRET
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-6 -Jr')
, Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Fig. 27. POSITION OF THE FARTS OF THE MMIAUTOcIATIC DEVICE WHEN THE
BREECH IS CLOSED.
SECRET
1. Spring (30-5).
2. Roller (30-27MFORN/NO DISS7r1 APriis 1)/f irorrrn
3. Catch (30-51). 50X1-HUM
4. Stop (30-52).
5. Plunger (30-58).
50X1-H UM
50X1-H UM
6. Straightedge( 30-56).
7. Collar( 30-604.
8. Spring( 30-554.
9. Trigger mechanism(Sb 10-4.6).
10. Cam of the semiautomatic device( 30-61).
11. Axis of the crank mechanism( 02-19).
12. Breech( 01-20)
13. Breech block wedge( 02-1).
14.. Crank( 02-29).
15. Grip of the handle( 02-27).
16. Bearing bush( 02-17).
17. Closing mechanism( Sb 02-4.).
18. Upper extractor( 02-87) .
a. Tooth of the crank.
b. Shoulder of the extractor.FF.193FT
50X1-H UM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26 : CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUM
Fig 28. Position of the parts of the semi-automatic device
when the breech is open.
1.
Spring (30-5)
8.
Spring (30-55)
2.
Roller (30-27)
10.
Cam of the semi-automatic device (30-61)
3.
Catch (30-51)
13.
Breech block wedge (02-1)
4.
Stop (30-52)
19.
Axis of the sear (02-5)
5.
Plunger (30-58)
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUM
Fig 29. Withdrawal of the wedge from the breech.
iTiFT
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Fir,; 30.
.:itid_rawal of the axis of th,::-; sear in tie
t:.le sear of the. fjrjn',AI from
r n
50X1 -HUM
Withdrawal of the sear of tne firing pin from n the
f7.ravv,77
r:. !?f!,
firing Din.
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Fig 32.
Position of the parts of the firing pin
mechanisin of the breech when assembled (1st operation)
50X1 -HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26 : CIA-RDP80T00246A028600720001-5
Fig 33. Position of the parts of the firing pin 'hec;h1Jnm
of the breech when assembled( 2nd operation)
Fig 3)4-. Position of the parts of the firing pin
mechanism of the breech when assembled Ord operation)
50X1-HUM
50X1-HUM
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
Declassified in Part - Sanitized Copy Approved for Release 2013/02/26: CIA-RDP80T00246A028600720001-5
.....+
"8 ".c. .: s .--,
C"1"-- ..---. t r-- ,----,
1 0 T- Qre\
01 CV---, -'S
0 1 --------, I.C7.1 r--- 0 ....-,-, t?e1.---, -r- a) ..---, 1.4? 1- I
...." CP \ C2D -..t 1 .---...--, r-N ,0 4-7 lc \ 0 0 ,.0 0 \.O ..--.. 0 0 0
....b0 0 0 I 0 f\ 4'\i i -P ,V I CV 4- 43 I's 0 (\J CV C' .1 ?1)
S-i ......., CV .1-- 0 r-- .7... .r... lokj Cr\ I I v- ?-- 0 I I 0
?f-I 1 1-- 0 n- (1 -4' `*+4 . rl 0 Q? O'N CH I I" \ (NI Q? 0N ?,-
I Y 0 0 0 ,...--e 0 0 0 got\