Engine Coolant

TM 10-3930-633-12

W = Weekly

A = After Operation

D = During Operation

B = Before Operation

Work

Interval and

Time

Item tO be Inspected

Sequence No.

(M H)

Procedure

10 GAGES AND SWITCHES

After start-up, observe all gages including hourmeter, for proper operation and

0.2

indication. See table 2-1 for proper gage readings. Check operation of light switches

and horn.

11 AIR CLEANER

0.1

Check air cleaner restriction indicator for indication of dirty element, requiring

replacement.

ACCELERATOR AND LINKAGE

Check condition of accelerator and linkage, and straighten or replace any bent rods

or links with worn pivot holes. Check for weakened or broken springs, and replace

as required. Adjust linkage in accordance with instructions in Section X.

SEAT AND MOUNTING

Check seat for secure mounting and proper operation of adjust mechanism.

0.1

BATTERY AND CABLES

Check level of water and state of charge of storage battery. See paragraph 3-10

0.2

Do not smoke or allow any open flame in the vicinity while checking or

fillng battery. This battery generates hydrogen, a highly explosive gas.

Check battery cable terminals for tight fit and cleanliness. Refer to paragraph 3-11.

0.1

MUFFLER AND PIPES

Check muffler and pipes for freedom from leaks or loose connections. Also check

0.2

mounting of supports and hangers.

the cap. Sudden removal of the cap may

3-8. Engine Coolant

result in serious burns, or injury from

a. Check the engine coolant level before the

being struck with the cap as it is blown

s t a r t of every shift. If necessary, add water or

from the radiator.

antifreeze as required by the ambient tem-

b. I f f r e e z i n g o r b e l o w f r e e z i n g a m b i e n t

perature. The recommended coolant level is 1 inch

t e m p e r a t u r e s are expected, protect the cooling

from the top of the radiator.

CAUTION

s y s t e m by adding antifreeze compound to the

radiator. Refer to table 3-2 for the required water-

Never add cold coolant to a hot engine.

to-antifreeze ratio required at various tem-

WARNING

peratures.

The cooling system is pressurized. When

removing the radiator cap while the

NOTE

Fasten a tag near the radiator filler cap indicating

engine is hot, turn it slowly to allow the

the type antifreeze, and level of protection.

pressure to escape before fully removing

3-3

Change 1