Chrysler PT Cruiser Service & Repair Manual page 113

PT
BRAKES - BASE (Continued)
OTHER BRAKE CONDITIONS
CONDITION
BRAKES CHATTER
BRAKES DRAG (FRONT
OR ALL)
BRAKES DRAG (REAR
ONLY)
BRAKES GRAB
EXCESSIVE PEDAL
EFFORT
EXCESSIVE PEDAL
EFFORT (HARD PEDAL -
CAN'T SKID WHEELS)
EXCESSIVE PEDAL
TRAVEL (VEHICLE STOPS
OK)
POSSIBLE CAUSES
1. Rear brake drum out of round or
disc brake rotor has excessive
thickness variation.
1. Contaminated brake fluid.
2. Binding caliper pins or bushings.
3. Misadjusted brake lamp switch.
4. Master cylinder not fully returning.
5. Binding brake pedal.
1. Parking brake cables binding or
froze up.
2. Parking brake cable return spring
not returning shoes.
3. Service brakes not adjusted
properly (rear drum brakes only).
4. Obstruction inside the center
console preventing full return of the
parking brake cables.
1. Contaminated brake shoe linings.
2. Improper power brake booster
assist.
1. Obstruction of brake pedal.
2. Low power brake booster assist.
3. Glazed brake linings.
4. Brake shoe lining transfer to brake
rotor.
1. Power brake booster runout
(vacuum assist).
1. Air in brake lines.
2. Rear drum brake auto-adjuster
malfunctioning.
BRAKES - BASE
CORRECTION
1. Isolate condition as rear or front.
Reface or replace brake drums or
rotors as necessary.
1. Check for swollen seals. Replace all
system components containing rubber.
2. Replace pins and bushings
3. Replace brake lamp switch. (Refer to
8 - ELECTRICAL/LAMPS/LIGHTING -
EXTERIOR/BRAKE LAMP SWITCH -
REMOVAL)
4. Inspect master cylinder and replace
as necessary.
5. Replace brake pedal/bushings.
1. Check cable routing. Replace cables
as necessary.
2. Replace cables as necessary.
3. Adjust rear brake shoes. Refer to
Brake Pads/Shoes - Drum Brake.
4. Remove console and remove
obstruction.
1. Inspect and clean, or replace shoes.
Repair source of contamination.
2. Refer to Power Brake Booster in this
section.
1. Inspect, remove or move obstruction.
2. Refer to Power Brake Booster in this
section.
3. Reface or replace brake rotors as
necessary. Replace brake shoes.
4. Reface or replace brake rotors as
necessary. Replace brake shoes.
1. Check booster vacuum hose and
engine tune for adequate vacuum
supply. Refer to Power Brake Booster.
1. Bleed brakes.
2. Inspect and replace drum brake
components as necessary. Adjust rear
brakes.
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