TM 9-2350-272-24-1
Table 2-1. Unit Preventive Maintenance Checks and Services (Contd).
ITEM TO
NOT FULLY
ITEM INTERVAL
CHECK/
MISSION
PROCEDURE
NO.
SERVlCE
CAPABLE IF:
22
Semi-
Front
g. Remove differential fill plug (1) and check oil level
annual
springs,
in differential (4) every 3,000 mi. (4,800 km) or 3 months,
whichever occurs first. Fill if necessary. Level should be
shaft,
within 1/2 in. (12.7 mm) from hole of fill plug (1) when oil
universal
is cold, and to the hole of fill plug when hot.
and slip
joints,
and axle
(Contd)
EXPECTED TEMPERATURES
ABOVE 15F
+40F TO -15F
+40F TO -65F
(ABOVE -9C)
(+4C TO -26C)
(+4C TO -54C)
GO-80/90
Oil, lubricating, multipurpose,
GO-80/90
(MIL-L-2105): GO-80/90
GO-75
Oil, lubricating, multipurpose,
(MIL-L-2105): GO-75
h. Inspect differential drainplug (3) and fill plug (1) for
tightness and signs of leakage. Tighten drainplug (3)
35-60 lb-ft (47-81 Nm) and fill plug (1) 80-135 lb-ft
(108-183 Nm).
i. Inspect differential seals (2) for leaks.
Underside a. Inspect underside of engine for fuel, water, and
23 Semi-
annual
of engine oil leaks.
and trans- b. Inspect oil pan and drainplug for leaks. If oil pan is
m i s s i o n loose or if leaks are present, tighten oil pan screws
35-40 lb-ft (47-54 Nm). If drainplug is loose or if leaks are
present, tighten drainplug 100 lb-ft (136 Nm) (M939/A1
vehicles), 60 lb-ft (80 Nm) (M939A2 vehicles). Notify your
supervisor if leaks still occur.
c. Inspect transmission body for cracks or loose bolts that
could cause leaks.
d. Inspect transmission shift linkage for bends, cracks,
and wear that could cause failure.
e. Tighten transmission oil pan mounting bolts 5 lb-ft
(7 Nm). Tighten oil pan drainplug 15-20 lb-ft (20-27 Nm).
2-26
