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 96 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:
11 Semi-
Batteries
h. Lubricate hinges on battery box cover and map
annual (Contd)
compartment every 1,000 mi. (1,600 km) or monthly,
whichever occurs first.
LUBRICANTS
OE/HDO
Lubricating oil, internal
combustion engine
(MIL-L-2104)
OEA
Lubricating oil, internal
combustion engine (arctic)
(MIL-L-46167)
EXPECTED TEMPERATURES
ABOVE 15°F
+40
o
F TO - 15°F
+40
o
F TO -65
o
F
(ABOVE -9
o
C)
(+4
o
C TO -26
o
C)
(+4
o
C TO -54
o
C)
OE/HDO 30
OE/HDO 10
OEA
i. Inspect battery box cover and map compartment cover
and seals on both for condition and security of installation.
Replace seal(s) on battery box cover and/or map
compartment cover if damaged (para. 3-123).
12 Semi-
Cab com-
annual
ponents
WARNING
If transmission oil temperature is above 220°F (104
o
C),
allow transmission oil to cool before removing dipstick.
CAUTION
l
Do not remove transmission dipstick before
cleaning dirt away from access plate, filler tube,
and dipstick. Dirt may enter and damage
transmission.
l
Do not overfill transmission. Internal
transmission component damage will result.
l
Change transmission oil when contamination by
fuel, water, and other foreign materials is evident.
Failure to do so may result in failure of internal
transmission components.
l
Shut off engine if transmission oil temperature
exceeds 300°F (149°C). Continuing to operate
transmission under these conditions may result in
failure of internal transmission components.
NOTE
Steps a. through c. apply to M939/A1 series vehicles
only. Transmission dipstick and temperature sending
unit cannot be accessed through cab floor on M939A2
series vehicles.
2-8
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