Symptom
|
Suspect Area
|
Reference
|
Lower pedal or spongy pedal
|
| 1. |
Brake system (Fluid
leaks) |
| 3. |
Piston seals (Worn or
damaged) |
| 4. |
Rear brake shoe clearance(Out of
adjustment) |
| 5. |
Master cylinder
(Inoperative) | |
repair
air·bleed
replace
adjust
replace
|
Brake drag
|
| 1. |
Brake pedal freeplay
(Minimum) |
| 2. |
Parking brake lever travel (Out of
adjustment) |
| 3. |
Parking brake wire
(Sticking) |
| 4. |
Rear brake shoe clearance(Out of
adjustment) |
| 5. |
Pad or lining (Cracked or
distorted) |
| 8. |
Anchor or Return spring
(Inoperative) |
| 9. |
Booster system (Vacuum
leaks) |
| 10. |
Master cylinder
(Inoperative) | |
adjust
adjust
repair
adjust
replace
replace
replace
replace
repair
replace
|
Brake pull
|
| 5. |
Pad or lining (Cracked or
distorted) | |
replace
replace
replace
replace
replace
|
Hard pedal but brake inefficient
|
| 1. |
Brake system (Fluid
leaks) |
| 4. |
Pad or lining (Cracked or
distorted) |
| 5. |
Rear brake shoe clearance(Out of
adjustment) |
| 7. |
Pad or lining
(Glazed) |
| 9. |
Booster system (Vacuum
leaks) | |
repair
air·bleed
replace
replace
adjust
adjust
replace
replace
repair
|
Noise from brake
|
| 1. |
Pad or lining (Cracked or
distorted) |
| 2. |
Installation bolt
(Loosen) |
| 6. |
Pad or lining
(Glazed) |
| 7. |
Anchor or Return spring
(Faulty) |
| 8. |
Brake pad shim
(Damage) |
| 9. |
Shoe hold-down spring
(Damage) | |
replace
adjust
replace
replace
clean
replace
replace
replace
replace
|
Brake fades
|
|
replace
|
Brake vibration, pulsation
|
| 5. |
master cylinder cap
seal |
|
replace
adjust
replace
replace
replace
replace
|
Brake Chatter
|
Brake chatter is usually caused by loose or worn
components, or glazed or burnt linings. Rotors with hard spots can
also contribute to brake chatter. Additional causes of chatter are
out-of-tolerance rotors, brake lining not securely attached to the
shoes, loose wheel bearings and contaminated brake
lining.
|
|
