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TRUCK SERVICE MANUAL
TM 5-4210-230-14&P-1
PROBLEM
POSSIBLE CAUSE
REMEDY
Fading Pedal (pedal falling away
under steady foot pressure).
Brake
drums
cracked
or
thin
(expanding when hot causing too much
clearance. Replace brake drums.
Poor quality brake fluid (low boiling
point).
Replace with approved brake fluid.
Hose
or
line
connections
loose,
ruptured or damaged causing leakage.
Tighten or replace.
Primary
cups
of
master
cylinder
pistons worn or damaged; master
cylinder bore corroded or worn.
Repair or replace master cylinder.
Wheel cylinder cups worn or damaged;
bores worn or corroded.
Repair or replace wheel cylinder.
Noise
and
Chatter
(squealing,
clicking
or
scraping
noise
upon
application of brakes)
Brake
shoes
twisted,
distorted,
incorrect or broken; cracked welds.
Replace brake shoes.
Linings worn out, glazed, incorrect,
loose or soiled w/grease or brake fluid;
foreign matter imbedded in linings;
incorrect grind or lining position.
Replace with new lined brake shoes.
Brake
shoe
rerurn
springs
weak;
anchor pins or backing plate loose or
defective; hold-down parts defective.
Tighten or replace parts and lubricate all
points of wear.
Shoe ledges rough or grooved.
Smooth ledges and lubricate.
Brake drums thin, cracked, loose or
scored.
Refinish or replace.
Power cylinder control valve defective
causing excessive noise.
Repair or replace valve.
Power cylinder check valve broken or
leaking.
Replace valve.
CTS-2055S Chapter IV Page 5
PRINTED IN UNITED STATES OF AMERICA
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