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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Brake
Roughness or Chatter; Pedal Pumping
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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Excessive
Pedal Effort
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.
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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.
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Brake
Rattle
1. Excessive clearance
between shoe and caliper or between shoe and splash shield.
2. Shoe
hold-down clips missing or improperly positioned.
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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.
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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.
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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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Information courtesy
of http://www.eotb.ca/
