(UNTITLED)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP83-00423R001900950007-0
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 11
• Document Creation Date: November 16, 2016
• Document Release Date: January 4, 2000
• Sequence Number: 7
• Publication Date: June 1, 1951
• Content Type: PHOTO

Approved For Release 2000/04/18 : CIA-RDP83-00423RO01
NNOW
Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
 Approved For Release 2000/04/18 : CIA-RDP83-00
Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
 Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
DIESEL TRACTOR
CATERPILLAR
54 HP (Belt)
 Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
 Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
 Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
 Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
 Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
 Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
DIESEL TRACTOR
Series C
CATERPILLAR
128 HP (Flywheel)
RUGGED NEW GEAR-TYPE BALANCER gives
six-cylinder smoothness to the D7 engine.
Approved For Release 2000/04/18: CIA-RDP8
 Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
DIESEL TRACTOR
Series C
HORSEPOWER:
Drawbar at sea level ....................... 102
DRAWBAR PULL (Lb.) AT SEA LEVEL:
First ................................... 25,900
Second .................................. 17,720
Third .................................. 11,960
Fourth ................................. 7,550
Fifth .................................. 5,280
The following calculated values for the maximum
drawbar pounds pull are based on the drawbar
pulls shown above. When slowed down by over-
load Caterpillar Engines develop a considerably
greater turning effort at the flywheel (torque)
which results in greater drawbar pull at reduced
speed.
First .................................. 28,700*
Second ................................ 19,640
Third ................................. 13,250
Fourth ................................ 8,370
Fifth ................................. 5,850
*Maximum pounds pull are available with ade-
quate weight and traction.
TRAVEL SPEED AT RATED ENGINE RPM:
Forward
MPH
FPM
First .............................
1.5
132
Second ...........................
2.2
194
Third ............................
3.2
282
Fourth ...........................
4.6
405
Fifth ............................
5.9
519
Reverse
First .............................
1.8
158
Second ...........................
2.6
229
Third ............................
3.8
334
Fourth ...........................
5.4
475
(Optional transmission available)
ENGINE:
Four stroke cycle, valve-in-head, diesel
Horsepower available at flywheel
at sea level ................. 128 @ 1200 RPM
Number of cylinders ......................... 4
Bore and stroke ...................... 534" x 8"
Piston displacement .................. 831 cu. in.
RPM-Governed at full load ............... 1200
RPM-At maximum drawbar pull
(point of maximum torque) ............... 800
N.A.C.C. horsepower rating for tax purposes 52.90
Lubrication ....................... Full pressure
Crankshaft......... Hi-Electro" hardened journals
Bearings ...................... 5 main bearings
aluminum alloy precision type
Fuel injection system ............ Caterpillar-built
FUEL: Burns No. 2 Fuel Oil (ASTM Specification
D396-48T), often called No. 2 furnace or burner oil,
with a minimum cetane rating of 35. Expensive,
premium-quality Diesel Fuel is Not required.
STARTING METHOD: Independent two cylinder, four
stroke cycle gasoline engine with magneto and gear
drive. Cooling system integral with diesel engine.
TRACK:
Gauge .................................... 74"
Number of shoes (each side) ................. 37
Width of standard track shoe ............... 20"
Height of grouser (measured from upper
face of standard track shoe) ............. 23/8
Length of tracks on ground (center drive
sprocket to center front idler) ........... 94%"
Area ground contact with 20"
track shoes ...................... 3,775 sq. in.
STEERING: Each track controlled by slow speed, heavy
duty dry multiple disc clutch and contracting brake
band
Clutch friction material ............... Metallic
Number of friction surfaces in each
steering clutch ......................... 20
Clutch release ............... Hydraulic booster
CLUTCH: Oil type, two metallic-faced plates with over-
center engagement. Clutch lubricated and cooled
by oil circulated under pressure. Connected to the
transmission by double universal joint.
CAPACITIES:
U. S. Gal.
Cooling system .............................
17
Fuel tank ..................................
85
Steering clutch hydraulic steering unit .......
Lubrication system
11/2
Crankcase ..............................
51/2
Transmission ...........................
1034
Flywheel clutch .........................
41/4
Final drive (each) .......................
53/4
GENERAL DIMENSIONS:
Length (overall) ..................... 13'115/s"
Height (measured from tip of grouser of
standard track shoe to highest point,
exclusive of exhaust pipe and precleaner) 6' 91/4
Width (overall) .......................... 8'1"
Drawbar height ........................ 1'51/4"
Ground clearance (measured from lower face
of standard track shoe) ............... 1'31/2"
WEIGHT:
Dry weight, lb. (approx.) ................ 25,970
Operating, lb. (approx.) ................. 26,930
CATERPILLAR
Diesel Engines 0 Tractors ? Motor Graders
Earthmoving Equipment
CATERPILLAR TRACTOR CO.
PEORIA, ILLINOIS, U.S.A.
Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
 Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0
RESTRICTED OiiYiiM~M~1 AL SECRET
ROUTING AND CONTROL RECORD
DO NOT DETACH FROM 'ON LOAN' DOCUMENTS
25 may 1955
DATE
TO:
Graphics Register
ArrN: 25X1A
BUILDING
ROOM NO.
TITLE
Photos of Caterpillar Tractors
25X1A2g
REMARKS
? RETAIN
Lj ON LOAN
DOCUMENT(S) MUST BE
DOCUMENT(S)
FOR RETEN5ION BY (DEADLINE)
BY ADDRESSEE
FROM:
BUILDI
Quarters Eye 1808 2576
SECRET
FORM NO. 57-29
DEC 1951
Approved For Release 2000/04/18 : CIA-RDP83-00423R001900950007-0