TM-9-2320-386-24-1-1

2-1/2-TON, 6X6, M44A3 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; EXTENDED SERVICE PROGRAM (ESP); UNIT, DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL; VOLUME 1 OF 2

MAY 2001
TM-9-2320-386-24-1-1

  TM-9-2320-386-24-1-1 - Page 60 of 1078

TM 9-2320-386-24-1-1
0010 00
0010 00-12
Unit Mechanical Troubleshooting (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
34. DIFFERENTIAL VIBRATES
Step 1. Check conditions of tires and rims. Repair or replace defective components (WP 0174 00).
Step 2. Complete troubleshooting malfunction 32, steps 1 and 2.
Step 3. If internal problems in differential exist, notify direct support maintenance.
END OF TESTING!
35. DIFFERENTIAL LEAKS OIL AT BRAKEDRUM
Check condition of axle seals. Inspect drum for presence of gear oil.
If gear oil is present in or around drums, replace axle seals (WP 0152 00).
END OF TESTING!
36. DIFFERENTIAL LEAKS OIL AT COMPANION FLANGE
Step 1. Check through-shaft for free play.
Place end of prybar between differential housing and companion flange. Apply pressure to
prybar.
Step 2. If companion flange moves, notify direct support maintenance.
END OF TESTING!
WHEELS AND TIRES
NOTE
A broken radial belt will cause symptoms as outlined in malfunctions 37,
38, 40, and 42.
37. UNEVEN TIRE WEAR
Step 1. Check for loose or missing wheel stud nuts and wheel studs.
a. Tighten wheel stud nut on hollow stud 275-300 lb-ft (373-407 N
•
m) and wheel stud nuts
390-420 lb-ft (529-569 N
•
m).
b. Replace missing wheel stud nuts and/or wheel studs (WP 0173 00 or WP 0172 00).
Step 2. Check for improper toe-in adjustment if wear is on front tires.
Adjust toe-in (WP 0179 00).
Step 3. Check wheel bearings for proper adjustment and damage. Raises wheel off ground.
Use prybar to lift up on bottom of tire. Excessive play indicates improperly adjusted or
damaged bearings.
a. Adjust wheel bearings (TM 9-2320-361-20).
b. Replace damaged bearings (TM 9-2320-361-20).
c. Check tires are inflated properly (TM 9-2320-386-10).
END OF TESTING!
38. WHEEL SHIMMY OR WOBBLE
Step 1. Inspect wheels for bends and damage.
Replace bent or damaged wheels (WP 0174 00).


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