- 1. 1 *WAR D E P A R T M E ff^T E C H N I C A L
MANUAL7TRUCK21/2-TON, 6x6CMC CCKW-352 & 353This is a reprint of
TM 9-801 for Hockonly and tail! not be issued to
individualspossessing the original publicationWAR DEPARTMENT24
APRIL 1944Generated on 2013-07-24 08:01 GMT /
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2. WAR DEPARTMENT TECHNICAL MANUAL *TM 9-801RESTRICTEDTRUCK,
2V2-TON, 6x6(CMC CCKW-352 and 353)WAR DEPARTMENT24 APRIL 1944* This
manual, together with TM 9-1801 and TM 9-1802A, supersedes
thefollowing manuals:TM 10-1105, 18 Jul 1941 TM 10-1269, 19 Jan
1942TM 10-1147, 26 Aug 1941 TM 10-1501, 12 Jul 1941TM 10-1253, 8
Oct 1941 TM 10-1563, 1 Jul 1942In addition, this manual supersedes
the following:TM 9-801, 12 Apr 1943 OFSTB 10-1501-1, 6 Apr
1943OFSTB 801-1, 6 Apr 1943 OFSTB 801-4, 24 Jan 1943OFSTB
10-1147-1, 6 Apr 1943It also supersedes applicable portions of the
following:OFSTB 800-15, 14 Jul 1943 TB ORD 26, 9 Feb 1944TB ORD 13,
12 Jan 1944 TB ORD 32, 18 Feb 1944TB ORD 20, 24 Jan 1944Generated
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3. WAR DEPARTMENTWashington 25, D.C., 24 April 1944TM 9-801,
2V2-ton 6x6 Truck (CMC CCKW-352 and 353) is pub-lishedfor the
information and guidance of all concerned.[A.G. 300.7 (20 Nov 43)
]BY ORDER OF THE SECRETARY OF WAR:G. C. MARSHALL,Chief of
Staff.OFFICIAL:J. A. ULIO,Major General,The Adjutant
General.DISTRIBUTION: D 7 (5); B 18 (2); R 9 (4); Bn
2,4,5,6,7,8,9,17,18, 44 (2); C 9 (8); 1C 2,4,6,7,8,10,17,18,44
(2).f(For explanation of symbols, see FM 21-6.)/ vGenerated on
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4. TM 9-801U//3TRUCK, 2*-TON, 6 x 6(CMC CCKW-352 &
353)CONTENTSPART ONE GENERALParagrophs .PagesSECTION I.
Introduction .................. 1-2 5-6II. Description and
tabulated data .. 3-5 6-19III. Tools, parts, and accessories .....
6-10 20-27PART TWO-OPERATING INSTRUCTIONSIV. Controls and
instruments ....... 11-15 28-35V. Operation under usual conditions
16-23 35-54VI. Operation of auxiliary equipment 24-28 54-69VII.
Operation under unusual condi-tions....................... 29-35
69-79PART THREE MAINTENANCE INSTRUCTIONSVIII. Lubrication
................... 36-37 80-98IX. New vehicle run-in test
......... 38-40 99-103X. First echelon preventive
mainte-nanceservice ............... 41-45 103-114XI. Second echelon
preventivemaintenance ................ 46 114-137XII. Power plant
trouble shooting anddiagnosis ................... 47-59
137-150XIII. Power train and miscellaneoustrouble shooting and
diagnosis . 60-74 150-161XIV. Engine description, data,
mainte-nance,and adjustment onvehicle ..................... 75-82
161-177XV. Engine removal and installation . 83-85 178-186XVI.
Ignition system ............... 86-90 186-196XVII. Fuel and air
intake system ...... 91-101 196-215Generated on 2013-07-24 08:02
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5. TM 9-801CONTENTSSECTION Paragraphs PagesXVIII. Exhaust system
102-105 215-219XIX. Cooling system 106-112 220-230XX. Starting
system 113-115 230-233XXI. Generating system 116-118 233-238XXII.
Battery and lighting system. . . . 119-125 238-249XXIII. Wiring,
harnesses, and circuits.. . 126-128 249-260XXIV. Radio noise
suppression system. . 129-134 260-272XXV. Instruments, gages, and
switches. 135-148 272-283XXVI. Clutch and controls 149-152
284-288XXVII. Transmission 153-155 288-292XXVIII. Power take-off
and controls 156-158 292-301XXIX. Transfer case and control 159-162
301-309XXX. Front axle 163-169 309-320XXXI. Rear axles 170-174
321-325XXXII. Propeller shafts, universal joints,and pillow block
175-177 325-329XXXIII. Service brake system 178-191 329-361XXXIV.
Hand brake system 192-196 361-366XXXV. Wheels, tires, and hubs
197-202 366-386XXXVI. Steering system 203-207 386-392XXXVII. Front
and rear spring suspension. 208-213 392-403XXXVIII. Frame 214-219
404-412XXXIX. Cab and associated parts 220-224 412-418XL. Sheet
metal 225-228 419-424XLI. Cargo and dump bodies 229-232
424-431XLII. Gasoline and water tank bodies. . 233-234
431-440XLIII. Winch and controls 235-242 440-448XLIV. Power hoist
and controls 243-249 448-463APPENDIXXLV. Shipment and temporary
storage.250-252 463-469XLVI. References 253-255 469-471Index
472-480.4.Generated on 2013-07-24 08:03 GMT /
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6. TM 9-8011-2PART ONEGENERALSection IINTRODUCTION1. SCOPE.a. These
instructions are published for the information andguidance of the
personnel to whom this equipment is assigned. Theycontain
information on the operation and maintenance of the Truck,2 Vi-Ton,
6x6, CMC CCKW-352 "and 353, as well as descriptions ofthe major
units and their functions in relation to the other com-ponentsof
this vehicle.b. This manual has the following arrangement:(1) Part
One, General, contains description and data. It liststhe tools,
spare parts, and equipment carried on the vehicle. It alsolists
organizational special tools for this vehicle.(2) Part Two,
Operating Instructions, contains instructions forthe operation of
the vehicle with description and location of thecontrols and
instruments.(3) Part Three, Maintenance Instructions, contains
informa-tionneeded for the performance of the scheduled lubrication
andpreventive maintenance services, and instructions for
maintenanceoperations which are the responsibility of the using
organizations(first and second echelons). Stock numbers in this
part were ob-tainedfrom the Organizational Spare Parts and
Equipment List ofSNL G-5Q8, 29 December 1943.(4) The Appendix
contains instructions for shipment and tem-porarystorage, and a
list of references including standard nomen-claturelists, technical
manuals, and other publications applicableto the vehicle.2.
RECORDS.a. Forms and records applicable for use in performing
pre-scribedoperations are listed below with brief explanations of
each.(1) STANDARD FORM No. 26, DRIVER'S REPORTACCIDENT,MOTOR
TRANSPORTATION. One copy of this form will be kept withthe vehicle
at all times. In case of an accident resulting in injury orproperty
damage, it will be filled out by the driver on the spot or
aspromptly as practical thereafter.(2) WAR DEPARTMENT FORM No. 48,
DRIVER'S TRIP TICKETGenerated on 2013-07-24 08:03 GMT /
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MAINTENANCE SERVICE RECORD. This form, prop-erlyexecuted, will be
furnished to the driver when his vehicle isdispatched on
non-tactical missions. The driver and the official userof the
vehicle will complete in detail appropriate parts of this
form.These forms need not be issued for vehicles in convoy or on
tacticalmissions. The reverse side of this form contains the
driver's dailyand weekly preventive maintenance service reminder
schedule.(3) W.D., A.G.O. FORM No. 478, MWO AND MAJOR UNIT
AS-SEMBLYREPLACEMENT RECORD. This form will be used by all
per-sonnelcompleting a modification or major unit assembly (engine,
7. TM 9-8012-3TRUCK, 2V2-TON, 6x6transmission, transfer case, and
tracks) replacement to recordclearly the description of work
completed, date, vehicle hours,and/or mileage, and MWO number or
nomenclature of unit as-sembly.Personnel performing the operation
will initial in the columnprovided. Minor repairs, parts, and
accessory replacements will notbe recorded.(4) W.D., A.G.O. FORM
No. 6, DUTY ROSTER. This form, slightlymodified, will be used for
scheduling and maintaining a record of ve-hiclemaintenance
operations. It may be used for lubrication records.(5) W.D., A.G.O.
FORM No. 461, PREVENTIVE MAINTENANCESERVICE AND TECHNICAL
INSPECTION WORK SHEET FOR WHEELEDAND HALF-TRACK VEHICLES. This form
will be used for all 1,000-mile (monthly) and 6,000-mile
(semi-annual) maintenance servicesand all technical inspections
performed on wheeled or half-trackvehicles.(6) W.D., O.O. FORM No.
7353, SPOT-CHECK INSPECTION RE-PORTFOR ALL MOTOR VEHICLES. This
form may be used by allcommanding officers or their staff
representatives in making spot-checkinspection on all vehicles.(7)
W.D., A.G.O. FORM No. 468, UNSATISFACTORY EQUIPMENTRECORD. This
form will be used for reporting manufacturing, design,or
operational defects in material with a view to improving
andcorrecting such defects, and for use in recommending
modificationsof material. This form will not be used for reporting
failures, isolatedmaterial defects, or malfunctions of material
resulting from fairwear and tear or accidental damage, nor for the
replacement, repair,or the issue of parts and equipment. It does
not replace currentlyauthorized operational or performance
records.(8) W.D., O.O. FORM No. 7370, EXCHANGE PART OR
UNITIDENTIFICATION TAG. This tag, properly executed, may be
usedwhen exchanging unserviceable items for like serviceable
assemblies,parts, vehicles, and tools.Section IIDESCRIPTION AND
TABULATED DATA3. DESCRIPTION.a. General. Vehicles described in this
manual are designatedGenerated on 2013-07-24 08:03 GMT /
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TRUCK, IVi-ton, 6x6, CMC CCKW-352 and 353. The vehiclesare equipped
with one driving front axle and two driving rear axles,.and six
driving wheels. Conventionally mounted open type cab isused on all
vehicles with either cargo, cargo-dump, gasoline tank, orwater tank
body. In addition to special purpose use, depending upontype of
body, vehicles may also be used for towing tractors, guns, andother
wheeled equipment.b. General Characteristics.(1) POWER PLANT.
Six-cylinder, in-line, valve-in-head engine 8. TM 9-8013DESCRIPTION
AND TABULATED DATALEFT FRONT VIEWRIGHT REAR VIEWSTRAIGHT FRONT
VIEWDA PD 332854Figure 1 CCKVV-352 (Short Wheelbase) with Carga
Bodyand WinchLess Tarpaulin7Generated on 2013-07-24 08:04 GMT /
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9. TM 9-8013TRUCK, 2V2-TON, 6x6LEFT REAR VIEWLEFT FRONT
VIEWSTRAIGHT FRONT VIEWRA PD 332891Figure 2CCKW-353 (Long
Wheelbase) with Cargo Bodyand WinchTarpaulin Installed8Generated on
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10. TM 9-8013DESCRIPTION AND TABULATED DATAis three-point mounted
at front end of chassis frame. Conventionalaccessories such as
generator, cranking motor, distributor, oil filter,carbureter, air
cleaner, clutch, etc., are attached to engine proper.Transmission,
mounted to rear end of engine, has five speeds forwardand one
reverse, with direct drive in fourth speed and over-drive infifth.
Clutch is single dry-plate type attached directly to flywheel.(2)
AXLES, SUSPENSION, AND STEERING. Three driving axlesare
full-floating and may be either split or banjo type. Front axle
in-corporatesspecial universal joints at the steering knuckles
whichpermit steering of vehicle in conventional automotive manner.
Sus-pensionof axles from chassis frame is with semi-elliptic
springs, withtorque rod connections used at rear axles. Each front
spring is at-tachedto conventional two-channel type frame by a
shackle at frontend, and a bracket at rear end. Each rear spring is
supported at thecenter on cross shaft bearings. Ends of rear
springs are fitted intoguides at wheel ends of rear axles.(3)
BRAKES. Service brakes are vacuum operated hydraulictype, operating
two mechanical brake shoes at each wheel. Hydraulicmaster cylinder,
operated by foot brake pedal, actuates Hydrovacpower cylinder,
which in turn transmits hydraulic pressure to wheelcylinders to
apply brakes. Band type hand brake assembly is mount-edon output
shaft at rear of transfer case. Conventional latch typehand brake
lever operates brake through rods and linkage for emer-gencystops,
or to hold vehicle while parking.(4) POWER DRIVE UNITS. Two-speed
transfer case permits driveby rear axles, or front and rear axles,
depending upon position ofmanual shift levers. Axles are driven
through conventional typepropeller shafts from transfer case. Power
take-off for winch andhoist operation (when used) is mounted on
left side of transmission,and drives these auxiliary units through
universal joint type driveshafts.(5) WINCH. The winch, when
supplied, is mounted at front endof vehicle, and is driven through
drive shaft by transmission powertake-off.(6) CAB. The two-man cab
consists of a metal open top en-closurearound driver's compartment.
Cab is equipped with wind-shield,Generated on 2013-07-24 08:05 GMT
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side curtains, and provision for gunmount ring.(7) BODY TYPES.(a)
Cargo (figs. 1 and 2). Wood type cargo body, equipped withtroop
seats, cargo racks, bows, and top tarpaulin, may be mountedon
either long wheelbase (CCKW-353) or short wheelbase (CCKW-352)
chassis.(b) Cargo Dump (fig. 3). Metal type cargo dump body,
equippedwith troop seats, cargo racks, bows, and top tarpaulin, is
mountedonly on long wheelbase (CCKW-353) chassis with winch.
Hydraulichoist, mounted on subframe, raises body to dumping
position.(c) Gasoline Tank Body (fig. 4). Metal gasoline tank body,
con-sistingof two 375 gallon tanks, is mounted only on long
wheelbase(CCKW-353) chassis. Tank is equipped with dump valves and
11. TM 9-8013TRUCK, 2V2-TON, 6x6, IRA PD 64759Figure 3CCKW353 (Long
Wheelbase) with CargoDump BodyLess Tarpaulinsimilar equipment.
Chassis upon which gasoline tanks are mountedare not equipped with
winches or pintle hooks.(d) Water Tank Body (fig. 5). Metal water
tank body of 700gallon capacity is mounted only on long wheelbase
(CCKW-353)chassis. Tank body is equipped with auxiliary gasoline
engine andpump unit, control valves, portable heating unit, and
heating con-nectionsto chassis exhaust pipe system. Chassis upon
which watertank bodies are mounted are not equipped with winches or
pintlehooks.(e) Special Purpose Bodies. Either long wheelbase or
shortwheelbase chassis (CCKW-353 or 352) with or without winch,
maybe used with special purpose bodies such as van, water
purification,10Generated on 2013-07-24 08:05 GMT /
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12. TM 9-8013DESCRIPTION AND TABULATED DATALEFT VIEWRIGHT REAR
VIEWSTRAIGHT REAR VIEWRA PD 332881Figure 4CCKW-353 (Long Wheelbase)
with Gasoline TankBodyLess Camouflage Equipment11Generated on
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13. TM 9-8013f.TRUCK, 21/2-TON, 6x6LEFT FRONT VIEWRIGHT REAR
VIEWSTRAIGHT REAR VIEWRA PD 332868Figure 5CCKW-353 (Long Wheelbase)
with Water TankBodyLess Camouflage Equipment12*Generated on
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14. TM 9-8013-4DESCRIPTION AND TABULATED DATAEARLY MODEL-. f
GENERAL. MOTOfU 1U^/NOMENCLATURE -TRUCK 2 TON 6X0 [^ SUPPLY SERVICE
MAINTAINING VEHICLEORDNANCE DEPARTMENTMAKE AND MODEL -
GMC-CCKW-333MFG'S. SERIAL NO. -VEHICLE WT. UNLOADEDMAX. PAY
LOADMAX. GROSS WT.CONCERNEDPRESCRIBED BY SERVICEOCTANE RATING OF
GASOLINE - T0 MINS.A.E. GRADE OF OIL BELOW 32* r - OE 103.AE. GRADE
OF OIL ABOVE 32*F-OE30GMC TRUCK A COACH DIVISIONGENERAL MOTORS
CORPORATIONPONTIAC. MICHIGAN'RING MOUNTt)RIMC MOUNTwOVERALL
LENGTHOVERALL WIDTHOVERALL HEIGHTLOWEST OPERABLE HEIGHTSHIPPING
CUBICSHApING TONNAGE'LATE MODELFigure 6Vehicle Nomenclature
PlatesRA PD 332860oil service, shop, topophoto, and air compressor.
These bodies are notdescribed in this manual.4. DIFFERENCES AMONG
MODELS.a. Model Designation. Model designation symbols,
togetherGenerated on 2013-07-24 08:06 GMT /
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and numbers, are stamped on nomenclature plate(fig. 6). These
identification letters and numbers are all that arenecessary to
identify the vehicle as to wheelbase, type of axle, bodytype, and
whether or not it is equipped with a winch. The numeralsappearing
after the model designation and the equipment suffix rep-resentthe
chassis serial number. The nomenclature plate used onlate vehicles
contains information pertinent to shipping (fig. 6). Thefollowing
table itemizes and explains the vehicle identification
sym-bols.VEHICLE IDENTIFICATIONSymbolsGMC
ModelSuffixWheelboserypeTypCCKW-352Al145-inchsplitcargoCCKW-352Bl145-inchsplitcargoCCKW-352A2145-inchbanjocargo
15. TM 9-8014TRUCK, 21/2-TON, 6x6VEHICLE IDENTIFICATION
fCont.)SymbolsEquipmentSuffixChassisWheelbaseCMC
Made/CCKW-353A2164-inchCCKW-353Bl164-inchCCKW-353B2164-inchCCKW-353Dl164-inchCCKW-353D2164-inchCCKW-353Al164-inchCCKW-353G2164-inchCCKW-353HI164-inchCCKW-353H2164-inchExplanation
of SymbolsAxle BadyType Type Winchbanjo cargo nonesplit cargo
yesbanjo cargo yessplit gas tank nonebanjo gas tank nonesplit water
tank nonebanjo water tank nonesplit dump yesbanjo dump yesBANJO
TYPE AXLESPLIT TYPE AXLERA PD 64499Figure 7Axle Hausing
Identificationb. Axle Housing Types. Vehicles may be equipped with
eithersplit type (indicated by suffix numeral 1) or banjo type
(indicatedby suffix numeral 2). These axle housing types can be
identified asillustrated in figure 7.c. Spare Tire and Vehicle Gas
Tank Location.(1) SHORT WHEELBASE (CCKW-352). Spare tire and
wheelcarrier, and gasoline tank on short wheelbase chassis
(CCKW-352)are mounted across chassis frame at rear of cab.(2) LONG
WHEELBASE (CCKW-353). On long wheelbasechassis with cargo or cargo
dump body only, spare wheel and tireare mounted under body on frame
left side rail. The gasoline tank ismounted on frame right side
rail immediately forward of forwardrear wheel. On long wheelbase
chassis with gas or water tank body,the spare wheel and tire are
mounted on frame back of cab, whilevehicle fuel tank location
remains the same as on conventional longwheelbase
chassis.14*Generated on 2013-07-24 08:06 GMT /
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16. TM 9-8014DESCRIPTION AND TABULATED DATAENGINE SERIAL NUMBERON
RIGHT SIDE OF BLOCK*ENGINE SERIAL NUMBERON LEFT SIDE OF
BLOCKPUBLICATIONS APPLYING TO THIS VEHICLEOPERATORS MANUAL TM
9-801MAINTENANCE MANUAL TM 9-1801PARTS LIST SNL-G-508PUBLICATIONS
PLATERA PD 332890Figure 8Engine Serial Number and Publication
Platesd. Engine Serial Number and Plate (fig. 8). This plate
in-cludesengine serial number, cylinder bore, piston stroke, and
numberof cylinders. Plate is attached to left side of engine
crankcase. Engineserial number is also stamped on right side of
engine crankcase neardistributor.e. Publication Plate (fig. 8).
This plate includes TM numbersof technical manuals and parts list
to use with vehicle. Plate is lo-catedon dash panel above package
compartment.f. Water Tank and Gasoline Tank Body Camouflage (fig.
9).Some vehicles, equipped with water tank or gasoline tank
bodies,are provided with bows and tarpaulins to serve as
camouflage. Withtarpaulin installed, vehicles have the appearance
of cargo bodies.15*Generated on 2013-07-24 08:07 GMT /
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17. TM 9-8014TRUCK, 2'/2-TON, 6x6WATER TANK WITH TARP BOWSWATER
TANK WITH TARP INSTALLEDGAS TANK WITH TARP BOWSRA PD 332944Figure
9Tarpaulin Camouflage Equipment farWater or Gasoline Tank Body5.
TABULATED DATA.a. Engine Specifications (All Vehicles).Type
Valve-in-headNumber of cylinders 6 in-lineHorsepower (S.A.E.)
34.35Displacement (Cu in.) 269.5Bore (in.) 325/32Stroke (in.)
4Engine governed speed (rpm) 2,75016Generated on 2013-07-24 08:07
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18. TM 9-8015DESCRIPTION AND TABULATED DATAS t|. 10 o .0O CMn (.1.
CM S)0 . 0r-l IO'. ^S o. o cJio . CMCO CM CO - CO f CM O "^ '00ys
vi o vIr- 3' O"iIO . O O O r ~IO 00 uJ h *OO^ . t^* IO CO COO -t"
^i*: *: v? 'lOTT t-T vTvi CO CMoa- ^H pi" ? O OO O O O O O 1010 10
o O O O r^Tf O Ol IO O IO 01