TM-9-2320-361-24-1
2-1/2 TON, 6X6, M44A2 SERIES TRUCKS
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2
AUGUST 2006
TM-9-2320-361-24-1 - Page 151 of 1176
TM 9-2320-361-24-1
0008 00
0008 00-23
MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. DIFFERENTIAL NOISY
1. Check transfer case operation and
noise. (Refer to WP 0008 00, table
6, malfunction 4.)
2. Check differential operation.
Remove differential drive
propeller shafts (WP 0139 00).
Raise wheels and manually turn
wheels and observe differential
operation.
If tires still do not rotate, replace
differential assembly (WP 0454 00).
2. DIFFERENTIAL
CLUNKS DURING
TURNS OR INITIAL
TAKEOFF
Check differential internal operation.
Remove differential and disassemble.
Repair or replace as necessary
(WP 0454 00 and WP 0455 00).
3. DIFFERENTIAL LEAKS
OIL
1. Check differential shaft seals
condition. Inspect for presence of
gear oil at gaskets and companion
flange areas.
2. Check axle housing condition.
Inspect axle housing for external
evidence of gear oil.
1. If oil is present, replace seals and
gaskets (WP 0149 00).
2. If seals replacement does not
correct problem and leak
continues, remove differential and
repair (WP 0454 00 and
WP 0455 00).
1. If axle housing has pinhole leaks,
repair or replace axle housing
(WP 0148 00 and WP 0151 00).
2. If axle housing is cracked or
damaged, replace (WP 0148 00
and WP 0151 00).
4. ABNORMAL TIRE
WEAR (FRONT AXLE)
Check steering knuckle sleeve
bushings condition and end play.
1. If steering knuckle sleeve
bushings are defective, replace
(WP 0150 00).
2. If steering knuckle end play is
excessive, adjust (replace with
correct shim) (WP 0150 00).
3. If steering knuckle end play
remains excessive, replace sleeves
or axle housing (WP 0148 00 and
WP 0150 00).
5. ABNORMAL TIRE
WEAR (REAR AXLE)
Check rear end frame and
suspension alignment (WP 0206 00).
If alignment is incorrect, adjust
(WP 0206 00).
Table 7. Differential Troubleshooting Procedures.
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