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SYMPTOM
9. One brake drags.
10. Parking brake will
not engage.
16
DRUM BRAKE TROUBLESHOOTING
CAUSE
1. Weak or broken shoe return
spring.
2. Improper brake shoe
adjustment.
3. Defective wheel cylinder.
4. Bent or distorted brake shoe.
1. Defective expander unit.
2. Binding wedge assembly.
3. Parking brake actuator not
working.
BW1601 © 2004 Bendix Commercial Vehicle Systems LLC All rights reserved. 6/2004 Printed in U.S.A.
REMEDY
1. Replace shoe return springs.
2. Adjust brake shoes and repair
automatic adjuster if necessary.
3. Repair or replace wheel cylinder.
4. Replace brake shoes in axle sets.
1. Repair or replace expander unit.
2. Repair or replace wedge.
3. Refer to vehicle service manual.
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