TM-9-2320-272-23-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-2 - Page 361 of 1417
Table
1.
Field Preventive Maintenance Checks and Services - Continued.
ITEM
NO.
INTERVAL
ITEM TO BE
CHECKED OR
SERVICED
PROCEDURE
EQUIPMENT
NOT READY/
AVAILABLE IF:
1
2
4
3
I00008DAA
Figure 8.
Differential.
i.
Inspect differential seals (Figure 8, Item 2) for
leaks.
23
Semiannual
Underside of
Engine and
Transmission
a.
Inspect underside of engine for fuel, water, and
oil leaks.
b.
Inspect oil pan and drain plug for leaks. if oil pan
is loose or if leaks are present, tighten oil pan screws
35
to
40 lb-ft
(47 to 54 N·m). If drain plug is loose or if
leaks are present, tighten drain plug 100 lb-ft (136 N·m)
(M939/A1 vehicles), 60 lb-ft (80 N·m) (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 N·m). Tighten oil pan drain plug 15 to 20 lb-ft
(20
to
27
N·m).
24
Semiannual
Cooling System
a.
Inspect coolant lines, hoses, and fittings for loose
connections, cracks, frays, wear, and damage that could
cause leaks. Tighten loose connections. Replace any oil
line, hose, or fitting that is cracked, frayed, worn, or
damaged and could cause leaks.
TM 9-2320-272-23-2
0207
0207-26
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