|
| |
TRUCK SERVICE MANUAL
TM 5-4210-230-14&P-1
PROBLEM
POSSIBLE CAUSE
REMEDY
Grabbing or Pulling (severe reaction to
pedal pressure and out-of-line stops)
Tires not properly inflated.
Inflate tires to correct pressure.
Spring U-bolts loose.
Tighten U-bolts to correct specs.
Shoes improperly adjusted.
Adjust brake shoes.
Brake shoes distorted or incorrect.
Replace with new correct shoes.
Linings incorrect, loose on shoes or
soiled w/grease or brake fluid.
Install new correct linings.
Brake
shoe
anchors
not
properly
adjusted (causes incorrect lining to drum
contact).
Adjust brake shoe anchor.
Loose brake backing plate.
Tighten backing plate mounting bolts and
readjust brakes.
Brake shoe return springs weak, broken
or incorrectly installed.
Replace or install correctly.
Automatic adjuster parts, if equipped,
corroded, distorted or broken.
Free up and lubricate or replace.
Wheel bearings loose.
Adjust wheel bearings.
Brake drum too thin (expand when hot).
Replace drum.
Brake drum scored hard, spotted or out-
of-round.
Refinish or replace drum.
Lines, hoses or connections kinked,
clogged, collapsed or dented.
Repair or replace.
Master cylinder bore rough or corroded.
Repair or replace master cylinder
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 cylinder.
Wheel cylinders mismatched.
Replace with correct cylinders.
Pedal linkage binding.
Free up and lubricate.
Power cylinder control valve defective.
Replace control valve.
Power cylinder diaphragm plate binding
and suddenly releasing.
Clean, repair and lubricate.
Power cylinder control valve rod binding
at pedal.
Free up and lubricate.
CTS-2055S Chapter IV Page 4
PRINTED IN UNITED STATES OF AMERICA
|
