HYDRAULIC AND PARK BRAKE SYSTEMS
Brake System Troubleshooting
Page 6-6 2001 Pioneer 1200 Gasoline Vehicle Maintenance and Service Manual
6
Vehicle pulls to one side,
Continued
Water on the brake shoe linings
Apply the brakes several times to dry the
brake shoe linings.
Sticking wheel cylinder piston
Replace the wheel cylinder. See Wheel
Cylinder Replacement on page 6-19.
Faulty suspension parts
See Section Section 7 – Steering and
Front Suspension or Section 9 – Rear
Suspension.
Pulsating brake pedal
Warped brake drums
Replace the brake drums. See Brake
Drum Removal on page 6-7.
Bent axle
Replace the axle. See Section 16 – Unit-
ized Transaxle with Differential Lock.
Worn or damaged front wheel bearings
Replace bearings. See Section 7 – Steer-
ing and Front Suspension.
Noise and chatter –
Squealing, clicking or scraping sound
upon brake application
Bent, damaged or incorrect brake shoes
Replace the brake shoes. See Brake
Shoe Removal on page 6-9.
Worn out brake shoes
Replace the brake shoes. See Brake
Shoe Removal on page 6-9.
Foreign material embedded in brake shoe
linings
Replace the brake shoes. See Brake
Shoe Removal on page 6-9.
Broken brake shoe return springs or hold
down springs
Replace damaged parts.
Rough, grooved or dry brake shoe ledges
or backing plate bosses
Lubricate the bosses of the brake cluster
backing plate, and/or replace the brake
shoes. See Brake Cluster Assembly
Inspection and Cleaning on page 6-10
and/or Brake Shoe Removal on page 6-9.
Brake drums are cracked or scored
Replace the brake drums. See Brake
Drum Removal on page 6-7.
Decreasing brake pedal travel
Weak or broken brake shoe return springs
Replace return springs.
Sticking wheel cylinder piston
Replace the wheel cylinder. See Wheel
Cylinder Replacement on page 6-19.
Overly adjusted brake adjusters
Adjust brake adjusters. See Brake Shoe
Adjuster Replacement on page 6-21.
Improperly adjusted park brake
Adjust park brake. See Park Brake
Adjustment on page 6-34.
All brakes drag
Binding brake pedal
Lubricate and adjust. See Section 5 of
this Maintenance and Service Manual.
Soft or swollen rubber parts caused by
incorrect or contaminated brake fluid
Replace master cylinder. See Master Cyl-
inder Removal on page 6-28.
Rear brakes drag
Binding park brake cables
Adjust or replace cables and adjust.
Improper brake adjustment
Adjust shoes and repair the brake shoe
adjusters if necessary. See Brake Clus-
ter Assembly Inspection and Cleaning
on page 6-10.
One brake drags
Weak or broken brake shoe return springs
Replace the return springs.
Sticking wheel cylinder pistons
Replace the wheel cylinder. See Wheel
Cylinder Replacement on page 6-19.
Loose or worn front wheel bearings
Adjust or replace front wheel bearings.
See Section 7 – Steering and Front
Suspension.
Troubleshooting Guide continued on next page...
SYMPTOM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION