TM 10-3930-641-20
TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
TRANSFER CASES AND DRIVE LINE COMPONENTS
1. FINAL DRIVE IS LOCKED
Inspect oil levels.
Add oil. (See LO 10-3930-641-12.)
Replace breather if plugged. (See page 2-392.)
2. FRONT OR REAR DIFFERENTIALS IN OPERATIVE
Inspect oil levels.
Add oil. (See LO 10-3930-641-12.)
Replace breather if plugged. (See page 2-392.)
3. NOISY TRANSFER GEARS
Step 1. Check transmission oil.
Add oil. (See LO 10-3930-641-12.)
Step 2. Inspect main drive shaft universal points.
Tighten capscrews. (See page 2-377.)
4. SYSTEM LOSES OIL
Step 1. Check drain plug.
Tighten/replace.
Step 2. Inspect all lines and fittings.
Tighten/replace.
