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

  TM-9-2320-361-34 - Page 34 of 764

TM9-2320-3S61-34
Table 2-1. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR lNSPECTlON
CORRECTIVE ACTION
27.
VIBRATION DURING CLUTCH ENGAGEMENT
CAUTION
Vibration during clutch engagement indicates a warped and/or
burned pressure plate and flywheel. When this condition is evident,
immediate vehicle clutch inspection is required. Prolonged vehicle
operation may result in permanent damage of flywheel and
unnecessary damage to transmission.
Check clutch assembly. Remove transmission (para. 8-2). Remove and inspect pressure plate, flywheel,
and clutch disc (paras. 3-5 and 4-1).
If pressure plate and clutch disc are defective, replace (para. 4-1).
Check flywheel condition (para. 3-5). If flywheel is burned or damaged, replace and
repair (para 3-5).
Check clutch pressure plate levers (TM 9-2815-210-34-2-2) and adjust if necessary.
Check pilot bushing condition (para. 4-1). If pilot bushing is damaged or defective,
replace (para. 4-1).
END OF TESTING!
28.
CLUTCH PEDAL WILL NOT TRAVEL OR DEPRESS
Check clutch release bearing and yoke condition. Remove transmission (para. 8-2) and inspect
housing pivot. Remove release bearing and inspect bearing (para. 8-4) and yoke (para. 8-2).
a. If transmission housing pivot is damaged, replace and repair (para. 8-2).
b. If release bearing is defective, replace (para. 8-4).
c. If transmission yoke is defective, replace (para. 8-2).
END OF TESTING!
TRANSMISSION
29. TRANSMISSION NOISY
Step 1. Check clutch condition (malfunction 26).
Step 2. Remove transmission for inspection (para. 8-2).
If transmission is defective or damaged, replace and repair (para. 8-2).
Step 3. Check transfer case condition (malfunction 35, step 2 and malfunction 36).
END OF TESTING!
30. TRANSMISSION LEAKS OIL
Check and verify approximate location of oil leak(s).
c.
d.
e.
f.
If transmission top cover gasket is leaking, replace gasket (para. 8-3).
If transmission PTO gasket is leaking, replace gasket in vehicle (TM 9-2520-246-34-1).
If transmission countershaft rear bearing cover gasket is leaking, replace in vehicle
(TM9-2520-246-34-1).
If transmission rear companion flange oil seal is leaking, replace seal in vehicle
(TM9-2520-246-34-1).
If transmission bearing cap gasket is leaking, replace gasket in vehicle
(TM9-2520-246-34-1).
If transmission leak(s) continues, replace (para. 8-2) and repair (TM 9-2520-246-34-1)
transmission.
END OF TESTING!
2-19


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