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TM 5-4210-220-12
Table 4-2 UNIT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8j
BRAKES GRAB OR PULL TO ONE SIDE
Step 1
Check brake linings
Replace if coated with oil or grease, (see para. 4-30 or 4-32)
Step 2
Check brake adjustment
Adjust, (see para. 4-30 or 4-32)
Step 3
Check brake chamber diaphragms for leaks
Replace chamber, (see para. 4-30 or 4-32)
8k
BRAKES SLOW TO OPERATE OR ARE ERRATIC
Step 1
Check air lines for leaks
Repair, (see para. 4-9)
Step 2
Check quick release, relay and spring brake valves for leaks
Repair, (see para. 4-22)
Step 3
Check foot treadle valve for leaks
Repair, (see para. 4-22)
Step 4
Check brake linings are clean
Replace shoes if coated with oil or grease, (see para. 4-30 or 4-32).
Step 5
Check brake adjustment
Adjust brakes, (see para. 4-30 or 4-32)
8m
PARKING BRAKE WILL NOT RELEASE
Step 1
Check for leaks in secondary or emergency release circuits
Replace hoses/fittings
Step 2
Check release valve for leaks
Repair brake release valve, (see para. 4-22)
Step 3
Check parking brake chambers for leaks
Replace brake chambers, (see para. 4-30)
4-40
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