TM 9-2330-359-14&P
Table 4-2. Organizational Troubleshooting (Con’t).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 5. Perform air leakage test (para 4-37).
Tighten any loose fittings or repair or replace fittings as required (para 4-35 or 4-36).
7. BRAKES GRAB.
WARNING
Wear safety goggles to prevent eye injury when opening air reservoir draincock. Step
away from airstream to prevent injuries.
Step 1.
Check for moisture in air reservoir.
Drain air reservoir.
Step 2.
Check for proper service brake adjustment.
Adjust service brakes (para 4-31).
Step 3.
Check for presence of grease on brakeshoe linings and brakedrum.
Replace brakeshoes and defective oil seals (paras 4-31 and 4-44).
Clean brakedrum (para 4-44).
Step 4.
Check for loose or worn wheel bearings.
Adjust or replace wheel bearings (para 4-44).
Step 5.
Check for cracked, scored, or deformed brakedrum.
Replace brakedrum (para 4-44).
Step 6.
Check for worn or loose brakeshoe linings.
Replace brakeshoes (para 4-31).
8. BRAKES DRAG (ONE OR MORE BRAKEDRUMS RUNNING HOT).
Step 1. Check for proper service brake adjustment.
Adjust service brakes (para 4-31).
Step 2. Check for weak or broken brakeshoe return spring.
Replace return spring (para 4-31).
Step 3. Check for out-of-round brakedrum.
Replace brakedrum (para 4-44).
TIRES
9. ABNORMAL TIRE WEAR.
Step 1. Check for proper wheel bearing adjustment.
Adjust wheel bearings (para 4-44).
4-10
