TM-9-2320-361-20

2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; UNIT MAINTENANCE

OCTOBER 1991
TM-9-2320-361-20

  TM-9-2320-361-20 - Page 122 of 1207

TM 9-2320-361-20
Table 2-2. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
29. TRANSFER CASE DIFFICULT TO SHIFT
Step 1.
Step 2.
Step 3.
Check transfer case fluid level (LO 9-2320-209-12-1).
Fill or drain to proper level (LO 9-2320-209-12-1).
Inspect shift linkage for bends, breaks, or missing parts.
Replace any broken, bent, or missing parts (para. 6-2 or 6-3).
If internal problems in transfer case exist, notify your supervisor.
END OF TESTING!
30. TRANSFER CASE GRINDS OR POPS OUT OF GEAR DURING NORMAL VEHICLE OPERATION
Step 1. Check condition and adjustment of external transfer case linkages. If linkages are
damaged, repair, replace, or adjust (para. 6-2 or 6-3).
Step 2. If internal problems in transfer case exist, notify your supervisor.
END OF TESTING!
31. TRANSFER CASE NOISY
Step 1. Check transfer case fluid level (LO 9-2320-209-12-1).
If low, fill to proper level (LO 9-2320-209-12-1).
Step 2. 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 drainplug, notify your supervisor.
END OF TESTING!
PROPELLER SHAFTS
32. PROPELLER SHAFT VIBRATION
Step 1.
Step 2.
Step 3.
Inspect propeller shaft for foreign material or damage.
Clean foreign material from propeller shaft, or replace if damaged (para. 7-2).
Inspect propeller shaft for loose screws.
If any screws are loose, tighten.
Check universal joints for play or looseness.
If rust is visible around U-joint, disassemble and inspect.
Replace U-joint, disassemble and inspect. Replace U-joint if damaged (para. 7-4).
END OF TESTING!
DIFFERENTIALS
33. DIFFERENTIAL NOISY
Step 1.
Step 2.
Step 3.
Check to see if front wheel drive is engaged.
Disengage front wheel drive when traveling on hard flat surfaces.
Check lubrication level in axle housing differential (LO 9-2320-209-12-1). If low, fill to
proper oil level (LO 9-2320-209-12-1).
Check for loose inner wheel adapter nuts or loose lugnuts.
a. If inner wheel adapter nuts are loose, tighten 400-425 lb-ft (542-576 N·m).
b. If lugnuts are loose, tighten 325-355 lb-ft (441-481 N·m).
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