CHAPTER 4 ORGANIZATIONAL MAINTENANCE INSTRUCTIONS

TM 10-3930-633-12

CHAPTER 4

ORGANIZATIONAL

MAINTENANCE

INSTRUCTIONS

Section I. SERVICE UPON RECEIPT OF MATERIEL

located in the engine compartment, on the right

4-1. Inspecting and Servicing the Equipment

side, just forward of the firewall.

When a new or reconditioned vehicle is first

e. Master Cylinder Brake Fluid Level. Remove

received by the using organization, it is necessary

master cylinder filler cap and check fluid level,

to determine that the vehicle is in satisfactory

which should be maintained at about inch

condition and will operate properly when first

below the top of the reservoir.

placed into service. For this reason, follow closely

f. Battery Water Level and State of Charge.

the service procedures outlined in the following

Remove filler caps on the battery and check water

paragraphs.

level, which must cover plates at least inch.

4-2. Preliminary Inspection

Check state of charge with a hydrometer. (See

Visually inspect the vehicle upon receipt for

paragraph 3-9.)

obvious damage, such as broken, cracked, dented

or missing parts. Carefully check pintle hook in

Do not smoke, weld, or employ any open

particular, for secure mounting, and proper

flame near the battery, as an explosive

Report a n y damage, errors or

operation.

gas is produced by the battery during its

discrepancies on the appropriate forms.

operation.

4-3. Preliminary Checks and Services

g. Switches,

Gages,

a n d Lights. C h e c k

operation of neutral start switch by placing

a. Engine Coolant Level. Remove radiator cap.

direction selector in forward or reverse position

Check to see that coolant level reaches the full

and turning ignition switch to START position.

mark, or approximately 1 inch below the top of

Starter must not engage until direction selector is

the filler neck.

returned to NEUTRAL position.

CAUTION

(1) Start engine and check hourmeter,

If ambient temperature drops below

temperature gages, oil pressure gage, ammeter,

32 F, also check level of antifreeze

and fuel level gage for proper operation.

protection by testing coolant with a

(2) Turn light switch ON and check to see

hydrometer.

that headlight and taillight are both operable.

b. Fuel Level. Remove fuel filler cap and

Check operation of horn by depressing center

strainer, or check instrument panel gage reading

button in steering wheel.

with ignition switch ON.

NOTE

4-4. Operational Check

If vehicle has been shipped with a preservative in

Refer to operating instructions in Chapter 2 and

the fuel tank, a prominent tag will be attached to

check operation of engine, transmission, and

the machine indicating this fact. Drain the fuel

brakes. Check that parking brake will prevent

tank of preservative by removing drain plug

directly underneath the tank.

truck motion with transmission in gear and

c. Engine Oil Level. Open the engine hood and

engine at full power.

remove the dipstick oil gage which is located just

4-5. Lubrication

forward of the distributor on the left side of the

Check machine record or service tags for in-

engine. Check oil level on dipstick to ensure that

dication o f last periodic maintenance per-

it reaches the FULL mark.

formance. If necessary, service the vehicle in

d. Transmission Fluid Level. Transmission

accordance with the Lubrication Order LO 10-

fluid level should be checked with the trans-

3930-633-12, using proper weight of lubricant for

mission warm, in neutral range, and the engine

the prevailing climatic conditions.

running. The transmission dipstick gage is

4-1