TM-9-2320-272-10

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; OPERATOR'S MANUAL

SEPTEMBER 2004

CHANGE 2

TM-9-2320-272-10 - Page 376 of 481

TM 9-2320-272-10

Change 2

3-27

3-8. ENGINE SERVICE (Contd)

NOTE

• Power steering reservoir

oil level is checked with

engine stopped.

• With engine cold, use

COLD FULL mark on

dipstick. If engine is at

normal operating temper-

ature, 175°-200°F (79°-

93°C), use HOT FULL

mark on dipstick.

(1)

The power steering reservoir

(7) is located on left side of engine near

the radiator. Remove oil filler cap (6) and

wipe off dipstick (5). Reinstall and

remove dipstick (5) to check reservoir (7)

oil level.

(2)

If oil level is low, add oil

(para. 2-10). Replace oil filler cap (6),

tighten securely, and wipe up any oil

spilled.

e. Fuel Filter/Water Separator.

(1) Service Operation.

(a)

The fuel filter/water

separator (9) is located under left-front

fender on M939/A1 series vehicles, and

attached to left side of engine on M939A2

series vehicles, and requires daily

maintenance.

(b)

On M939/A1 series vehicles,

open inlet drainvalve (8) located near top

of fuel filter/water separator (9).

(c)

On M939A2 series vehicles,

open drainvalve (10) at bottom of fuel

filter/water separator (9) and drain off 1

pt. (0.47 L) of liquid into a container.

(d)

If larger amounts of water

and impurities are detected, drain until

fuel is clear.

Notify unit maintenance.

(e)

After service has been

completed, close drainvalves (8) or (10),

and prime fuel system.