REAR AXLE BRAKES DRAGGING (Cont) - TM-9-2320-285-24-10548

TM 9-2320-285-24-1

2-46.

SERVICE BRAKE SYSTEM TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

6. REAR AXLE BRAKES DRAGGING (Cont)

Step 2.

Remove rear axle brakes air chambers (para 2-51d(2)).

Remove brake drums (para 2-44b).

Remove brake shoe and lining assemblies (para 2-50b) and check brake

return springs in a spring tester: spring tension shall be 75-90

pounds pull at 9-1/2 inches.

a. If return springs do not have proper tension, replace (para 2-50b).

b. If return springs have proper tension, go to step 3 below.

Step 3.

Check for loose, missing, or damaged brake shoe and lining assemblies mounting hardware.

a. If mounting hardware is loose, missing, or damaged, tighten loose parts and replace missing or

damaged parts (para 2-50b).

b. If mounting hardware is secure and undamaged, go to step 4 below.

Step 4.

Check slack adjuster, camshaft, and associated parts for damage or wear.

a. If parts are defective, replace (para 2-50b).

b. If parts are not defective, go to step 5 below.

Step 5.

Check for grease or dirt contamination on brake shoe and lining assemblies.

a. If brake shoe and lining assemblies are contaminated, replace (para 2-50b).

b. If brake shoe and lining assemblies are not contaminated, go to step 6 below.

Step 6.

Check rear axle brakes air chambers for damage.

a. If rear axle brakes air chambers are damaged, repair (para 2-51d(2)).

b. If rear axle brakes air chambers are not damaged, go to step 7 below.

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