TM-9-2320-272-24-1

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

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4

JUNE 1998

TM-9-2320-272-24-1 - Page 117 of 1015

TM 9-2320-272-24-1

Table 2-1. Unit Preventive Maintenance Checks and Services (Contd).

ITEM TO

ITEM

INTERVAL

CHECK/

PROCEDURE

NO.

SERVICE

NOT FULLY

MISSION

CAPABLE IF:

16

Semi-

Engine

annual

lubrication

WARNING

system and

Accidental or intentional introduction of liquid

oil lines

contaminants into the environment is in violation of

(Contd)

state, federal, and military regulations. Refer to

Army POL (para. 1-8) for information concerning

storage, use, and disposal of these liquids. Failure to

do so may result in injury or death.

NOTE

• Sample oil every 60 days or 1,000 mi. (1,600 km),

whichever occurs first. Army Reserve units will

sample oil every 120 days or 1,000 mi. (1,600 km).

• When AOAP laboratory support is not available,

change engine oil every 6,000 mi. (9,600 km) or

6 months, whichever occurs first.

• Engine AOAP sampling valve on M939/A1 series

vehicles is located on right side of engine attached

to oil cooler, On M939A2 series vehicles, valve is

located near starter on left side of engine.

[RPL]

e. Collect engine oil sample (para. 3-10) or change oil

(para. 3-5) as required.

EXPECTED TEMPERATURES

LUBRICANTS

ABOVE 15°F

+40°F TO -15°F

+40°F TO -65°F

(ABOVE -9°C)

(+4°C TO -26°C)

(+4°C TO -54°C)

OE/HDO

OE/HDO 30

OE/HDO 10

Lubricating oil, internal

combustion engine

(MIL-L-2104)

OEA

OEA

Lubricating oil, internal

combustion engine (arctic)

(MIL-L-46167)

f. Inspect valve cover(s) and gasket(s) for evidence of

leaks. Notify DS maintenance if leak(s) are detected.

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