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H E C K |  |
B R A K E S |
Excessive
Pedal Travel
1. Shoe and lining knock back
after violent cornering or rough road travel.
2. Piston and shoe and lining
assembly not properly seated or positioned.
3. Air leak or insufficient fluid
in system or caliper.
4. Loose wheel bearing adjustment.
5. Damaged or
worn caliper piston seal.
6. Improper booster push rod adjustment.
7.
Shoe out of flat more than .005".
8. Rear brake automatic adjusters in-operative.
9. Improperly ground rear brake shoe and lining assemblies.
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1. Excessive lateral run-out
of rotor.
2. Rotor excessively out of parallel.
3. Wheel bearings incorrectly
adjusted.
4. Rear drums out of round.
5. Brake pad reversed.
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1. Frozen or seized pistons.
2. Brake fluid, oil or grease on linings.
3. Shoe and lining worn below specifications.
4. Proportioning valve malfunction.
5. Booster inoperative.
6. Leaking
booster vacuum check valve.
7. Restricted, dented, kinked or collapsed brake
lines or hoses.
8. Partial system failure.
9. Fading due to incorrect
brake lining.
Back to top Pull,
Uneven or Grabbing Brakes
1. Frozen or seized pistons.
2. Brake fluid, oil or grease on linings.
3. Caliper out of alignment with
rotor.
4. Loose caliper attachment.
5. Un-equalized front tyre pressure.
6. Unmatched tires on same axle.
7. Incorrect front end alignment.
8.
Loose front end parts.
9. Lining protruding beyond end of shoe.
10. Restricted
brake tubes or hoses.
11. Malfunctioning caliper assembly.
12. Inoperative
combination valve.
13. Power brake unit malfunctioning.
Back to top Brake
Rattle
1. Excessive clearance
between shoe and caliper or between shoe and splash shield.
2. Shoe
hold-down clips missing or improperly positioned.
Back to top Heavy
Brake Drag
1. Frozen or seized pistons.
2. Operator riding brake pedal.
3. Incomplete brake pedal return due to linkage
interference.
4. Faulty booster check valve holding pressure in hydraulic
system.
5. Residual pressure in front brake hydraulic system.
6. Stuck
master cylinder piston.
7. Restricted brake lines or hoses.
8. Incorrect
parking brake adjustment.
9. Check valve in lines to front wheels.
Back to top Caliper
Brake Fluid Leak
1. Damaged or worn caliper
piston seal.
2. Scores in cylinder bore.
3. Corrosion build-up in cylinder
bore or on piston surface.
4. Metal clip in seal groove.
Back to top No
Braking Effect When Pedal is Depressed
1. Piston and shoe and lining
assembly not properly seated or positioned.
2. Air leak or insufficient fluid
in system or caliper.
3. Damaged or worn caliper piston seal.
4. Bleeder
screw open.
5. Air in hydraulic system or improper bleeding.
6. Hydraulic
leaks.
7. Master cylinder primary cup worn or damaged.
8. Master cylinder
bore corroded, worn or scored.
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