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 368 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:
(3)
Check oil level in transmission. If oil levels are
excessive, drain excess (Volume 3, WP
0362).
b.
Inspect transmission oil lines, hoses, and fittings
for loose connections, cracks, frays, wear, and damage
that could cause leaks. Tighten loose connections, or
notify your supervisor if any oil line, hose, or fitting is
cracked, frayed, worn, or damaged and could cause
leaks.
c.
Inspect transmission oil filter housing for security
of mounting. Ensure spin-on oil filter is tight. if spin-on oil
filter is loose, hand-tighten, then tighten an additional 3/4
turn by hand. If leak continues, replace filter (Volume 3,
WP
0381).
d.
For M939A2 series vehicles, inspect
transmission temperature sending unit for security and
signs of leaks, and wiring for frays, splits, breaks, and
missing insulation. Tighten temperature sending unit if
loose or leaking. Replace if necessary (WP
0341).
Repair or replace wiring that is missing, or shows signs
of frayed, split, or missing insulation. Tighten loose
connections (WP
0341).
e.
Inspect transmission PTO unit (winch models
and dump trucks only).
(1)
Inspect for security of mounting and leaks.
Notify your supervisor if mounting is loose or leakage is
present.
(2)
Inspect oil line and fittings between transmission
and PTO unit for loose connections, cracks, frays, wear,
and damage that could cause leaks. Notify your
supervisor if mounting is loose or leakage is present.
(3)
Inspect hydraulic pump for security of mounting,
leaks, and signs of damage that could cause leaks.
Notify your supervisor if mounting is loose or leakage is
present.
(4)
Inspect hydraulic lines and fittings for loose
connections, cracks, frays, wear, and damage that could
cause leaks. Notify your supervisor if mounting is loose
or leakage is present.
f.
Remove transfer case fill plug and check oil level
in transfer case every 3,000 mi (4,800 km) or 3 months,
whichever occurs first (Volume 5, WP
0820). Fill if
necessary. Level should be within 1/2 in. (12.7 mm) from
fill hole when oil is cold, or to the fill hole when hot.
TM 9-2320-272-23-2
0207
0207-33
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