TM 9-2320-272-24-1
Table 2-2. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
44. DlFFERENTlAL VlBRATES
Step 1. Check condition of tires and rims. Repair or replace defective components (para. 3-219 or 3-220).
Step 2. Perform malfunction 43, steps 1 and 2.
Step 3. If internal problems in differential exist, notify DS maintenance.
END OF TESTING!
45. DIFFERENTIAL LEAKS OIL
Step 1. Check condition of axle seals. Inspect brakedrum for presence of gear oil.
If gear oil is present in or around brakedrums, replace axle seals (para. 3-160).
Step 2. Check through-shaft for free play.
Place end of prybar between differential housing and companion flange. Apply pressure to
prybar.
Step 3. If companion flange moves, notify DS maintenance.
END OF TESTING!
WHEELS AND TIRES
NOTE
A broken or separated radial belt will cause symptoms as outlined
in malfunctions 46, 47, 49, and 51.
46. UNEVEN TIRE WEAR
Step 1. Check for loose or missing wheel stud nuts and wheel studs.
a. Tighten loose wheel stud nuts 400-425 lb-ft (542-576 Nm).
b. Replace missing wheel stud nuts and/or wheel studs (para. 3-218, 3-219, or 3-222).
Step 2. Check for improper wheel alignment adjustment if wear is on front tires.
Adjust alignment if necessary (para. 3-152).
Step 3. Check wheel bearings for proper adjustment and damage. Raise wheels off ground. Use
prybar to lift up on bottom of tire. Excessive play indicates improperly adjusted or damaged
bearings.
a. Adjust wheel bearings (para. 3-225).
b. Replace damaged bearings (para. 3-223, 3-224, 3-460, or 3-461).
c. Check that tires are properly inflated (TM 9-2320-272-10).
END OF TESTING!
47. WHEEL SHlMMY OR WOBBLE
Step 1. Inspect wheels for bends and damage.
Replace bent or damaged wheels (para. 3-218 or 3-219).
Step 2. Check wheel bearings for proper adjustment and damage. Raise wheels off ground. Use prybar
to lift up on bottom of tire. Excessive play indicates improper adjustment or damaged bearings,
a. Adjust wheel bearings (para. 3-225).
b. Replace damaged bearings (para. 3-223, 3-224, 3-460, or 3-461).
c. Check that tires are properly inflated (TM 9-2320-272-10).
END OF TESTING!
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