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 126 of 1015

TM 9-2320-272-24-1

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

NOT FULLY

PROCEDURE

MISSION

CAPABLE IF:

36

Semi-

Rear

annual

wheels

p.

Remove, clean, and lubricate axle breathers every

1,000 mi. (1,600 km) or monthly, whichever occurs first.

and hubs,

and

suspension

(Contd)

LUBRICANTS

OE/HDO

Lubricating oil, internal

EXPECTED TEMPERATURES

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 30

OE/HDO 10

combustion engine (MIL-L-2104)

OEA

Lubricating oil, internal

combustion engine (arctic)

(MIL-L-46167)

OEA

[RPL]

q.

Remove fill plug (3) on forward-rear and rear-rear

differential (1) and check oil level in differential (1) every

3,000 mi. (4,800 km) or 3 months, whichever occurs first. If

necessary, fill differential (1). Level in differential (1)

should be within 1/2 in. (12.7 mm) from hole of fill plug (3)

when oil is cold, and to hole of fill plug (3) when hot.

LUBRICANTS

Oil, lubricating, multipurpose

(MIL-L-2105) GO-80/90

EXPECTED TEMPERATURES

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)

GO-80/90

GO-80/90

Oil, lubricating, multipurpose

(MIL-L-2105) GO-75

GO-75

r.

Inspect differential drainplug (2) and fill plug (3)

for tightness and signs of leakage. Tighten drainplug (2)

35-60 lb-ft (47-81 N•m) and fill plug (3) 80-135 lb-ft

(108-183 N•m).

s.

Inspect differential seals for leaks.

[RPL]

t.

On M939A2 series vehicles, replace filter and install

wheel valves (para. 3-458).

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