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TRUCK SERVICE MANUAL
TM 5-4210-230-14&P-1
PROBLEM
POSSIBLE CAUSE
REMEDY
Dragging
Brakes
(slow
or
incomplete release of brakes, either
one wheel or all wheels) (Continued)
Shoe return springs weak or incorrect.
Normally encountered with one wheel
drag.
Replace with new springs.
Shoe ledges grooved or rusted.
Smooth ledges and lubricate.
Loose backing plate.
Tighten.
Parking brake improperly adjusted.
Adjust parking brake cables.
Parking brake cables sticking, dirty or
corroded.
Free up and lubricate.
Wheel bearings loose or worn.
Adjust or replace.
Fluid sluggish.
Flush and refill with approved fluid.
Brake lines, hoses or connections kinked,
clogged, dented or collapsed.
Repair or replace.
Master
cylinder
compensating
ports
blocked by swollen cups or binding pedal
or linkage.
Replace cups and/or check pedal and
linkage alignment.
Faulty residual check valve(s) in master
cylinder or power cylinder.
Replace valve(s).
Wheel cylinder cups swollen.
Flush hydraulic system with alcohol to
remove contaminated fluid and replace all
cups and seals.
Wheel cylinder bore rough or corroded.
Repair or replace wheel cylinders.
Brake pedal linkage binding or misaligned.
Free up linkage, align and lubricate
Control valve or power cylinder defective.
Replace defective part or power unit.
Master cylinder bore rough or corroded.
Repair or replace master cylinder.
Brake pedal bent.
Straighten or replace.
Stop light switch incorrectly positioned.
Adjust position of stop light switch.
Broken
master
cylinder
piston
return
spring.
Replace spring.
CTS-2055S Chapter IV Page 2
PRINTED IN UNITED STATES OF AMERICA
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