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TM 9-2320-285-24-1
2-46.
SERVICE BRAKE SYSTEM TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. FRONT AXLE BRAKES DRAGGING (Cont)
Step 4.
Remove plungers (para 2-50a).
Check plungers for corrosion, inadequate lubrication, or sticking.
Check seals for damage.
a. If plungers are corroded, replace (para 2-50a); if plungers are
inadequately lubricated, lubricate (para 2-50a); if plungers do
not slide freely in respective bores in spider, replace (para
b. If plungers are adequately lubricated and are not corroded or
sticking, and seals are not damaged, go to step 5 below.
Step 5.
Check brake shoe linings for grease or dirt contamination.
a. If brake shoe linings are contaminated, replace brake shoes (para 2-50a).
b. If brake shoe linings are not contaminated, go to step 6 below.
Step 6.
Check front axle brakes air chambers for damage.
a. If front axle brakes air chambers are damaged, replace or repair (para 2-51d(1)).
b. If front axle brakes air chambers are not damaged, go to step 7 below.
Step 7.
Check air brake system lines and fittings for air leaks.
a. If lines are leaking air, repair or replace (para 2-51a).
b. If fittings are leaking air, tighten. If fitting leaks after tightening, replace (para 2-51a).
6. REAR AXLE BRAKES DRAGGING
Step 1.
Check wheel bearing for proper adjustment (raise wheel and use pry bar to check for any noticeable
end play) or damage. Repeat for other wheel.
a. If end play is noticeable, adjust or replace wheel bearing (para 2-44b).
b. If end play is not noticeable, go to step 2 below.
2-524
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