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