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 155 of 481

e.

Check water pump for any

obvious coolant leakage or damage.

f.

Check pulleys for cracks and

damage.

DRIVER

WARNING

• Extreme care should be taken

when removing surge tank

filler cap if temperature gauge

reads above 175° F (79° C).

Steam or hot coolant under

pressure will cause injury.

• Accidental or intentional intro-

duction of liquid contaminants

into the environment is in vio-

lation of state, federal, and

military regulations. Refer to

Lubrication Order (para. 3-1)

for information concerning

storage, use, and disposal of

these liquids. Failure to do so

may result in injury or death.

NOTE

If surge tank on M939A2

series vehicles is found to be

empty, open drainvalve on

aftercooler and fill surge tank.

Close drainvalve when coolant

is observed flowing from drain,

and continue to fill to approxi-

mately bottom end of fill tube.

e.

Any class III

coolant leak or

damage is evident.

f.

Any pulley is

cracked or dam-

aged.

2-56

Table 2-3. Preventive Maintenance Checks and Services for Models M939/A1/A2 (Contd).

ITEM

NO.

INTERVAL

ITEM TO

CHECK/

SERVICE

NOT FULLY

MISSION

CAPABLE IF:

TM 9-2320-272-10

LOCATION

24

(contd)

After

Cooling

System

(contd)

CREWMEMBER

PROCEDURE