TM-9-2320-361-34
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
MAY 1992
TM-9-2320-361-34 - Page 36 of 764
TM9-2320-361-34
Table 2-1. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
35.
36.
37.
38.
39.
TRANSFER
Step 1
Step
2.
TRANSFER
g.
h.
i.
j.
k.
l.
If countershaft rear bearing cover gasket is leaking, remove transfer case and replace
gasket (para. 9-2 and TM 9-2520-246-34-1).
If rear output shaft oil seal is leaking, remove transfer case (para. 9-2) and replace seal
(TM 9-2520-246-34-1).
If rear output shaft bearing retainer gasket is leaking, remove transfer case (para. 9-2)
and replace gasket (TM 9-2520-246-34-1).
If top cover gasket is leaking, replace (TM 9-2520-246-34-1).
If PTO is leaking oil, repair (malfunction 47).
If transfer case oil leak(s) continues, remove transfer case (para. 9-2) and disassemble
(TM 9-2520-246-34-1). Check transfer housing halves for defects. Replace defective
components (TM 9-2520-246-34-1).
.
END OF TESTING!
CASE NOISY
Drain transfer case fluid (LO 9-2320-209-12-1) and check for signs of broken gears, metal
shavings, and contamination.
If broken gears, metal shavings, or contamination are found in transfer case or on
magnetic drain plug, repair or replace transfer case (para 9-2).
Check transfer case operation in high and low range and in neutral.
If transfer case is defective, repair or replace (para. 9-2).
END OF TESTING!
CASE GRINDS OR POPS OUT OF GEAR DURING NORMAL VEHICLE OPERATION
Replace and repair transfer case (para. 9-2).
END OF TESTING!
DIFFERENTIAL
DIFFERENTIAL NOISY
Step 1. Check transfer case operation and noise (malfunction 35).
Step 2. Check differential operation. Remove differential drive propeller shaft(s) (TM 9-2320-
361-20). Raise wheels (TM 9-2320-361-20) and manually turn wheels and observe
differential operation.
If tires still will not rotate, remove differential assembly and replace and repair (para. 10-3 or
10-4).
END OF TESTING!
DIFFERENTIAL CLUNKS DURING TURNS OR INITIAL TAKEOFF
Check differential internal operation. Remove differential and disassemble (para. 10-3 or 10-4).
Replace and repair defective components (para. 10-3 or 10-4).
END OF TESTING!
DIFFERENTIAL LEAKS OIL
Step 1. Check differential shafts seals condition. Inspect for presence of gear oil at gaskets and
companion flange areas.
a. If oil is present, replace seals and gaskets (para. 10-5).
b. If repeated seal replacements does not correct problem and leak continues, remove
differential (para. 10-3) and repair (para. 10-4).
2-21
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