TM 9-2320-289-34
Table 2-1. Mechanical Troubleshooting (Con’t)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
BRAKE SYSTEM
10, FRONT BRAKES DRAG
Step 1.
Remove front wheels and check operation of caliper piston.
If caliper piston operation is frozen or sluggish, disassemble caliper
assembly. (See paragraph 7-4) Check for improper lubrication or dirt in
caliper piston or caliper bore. Replace any damaged components.
11, BRAKES PULL WHEN APPLIED
Step 1.
Remove front and rear wheels. Inspect rotors and drums for heat spotting and
scoring.
Machine to specifications if heat spotted or scored. (See paragraph 7-2)
Step 2.
Check rear backing plate shoe guides for insufficient lubrication.
Apply grease (Item 37, Appendix B) to shoe guides if insufficiently lubricated.
Step 3.
Check operation of caliper piston.
If caliper piston operation is frozen or sluggish, disassemble caliper
assembly. (See paragraph 7-4) Check for improper lubrication or dirt in
caliper piston or caliper bore. Replace any damaged components.
Step 4.
Check components of suspension system for looseness or damage.
Tighten any loose components. Replace any damaged components.
12. BRAKES SQUEAK
Step 1.
Inspect rotors and drums for heat spotting and scoring.
Machine to specifications if heat spotted or scored. (See paragraph 7-2)
13. PEDAL EFFORT EXCESSIVE
Step 1.
Remove front wheels and check operation of caliper piston.
If caliper piston operation is frozen or sluggish, disassemble caliper
assembly. (See paragraph 7-4) Check for improper lubrication or dirt in
caliper piston or caliper bore. Replace any damaged components.
Step 2.
Repair power booster. (See paragraph 7-3)
Step 3.
Repair power steering pump. (See paragraph 8-5)
Step 4.
Replace combination valve. (See TM 9-2320-289-20)
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