Troubleshooting: Brake Pads

DELAMINATION

Symptom

Insufficient braking, squeal, brake shudder

Condition

Delamination

Cause

Excessive heat, adhesive failure, incorrect fitment, damaged during fitment

Solution

Replace pads

 

GLAZED

Symptom

Squeal, reduced stopping power

Condition

Glazed Pads

Cause

Excessive heat during bedding, brake fluid /grease smear during fitment or from hydraulic system.

Solution

Replace pads and disc if necessary

 

 

GREEN FADE

Symptom

Insufficient braking /fade when new pads were fitted

Condition

Some portion of pad surface did not make contact with disc during braking

Cause

Pads not run in /not bedded in sufficiently

Solution

Bed Pads in

 

 

WORN PADS

Symptom

Grinding noise, brake shudder, poor braking

Condition

Worn Pads

Cause

Pads not replaced in time

Solution

Replace brake pads and replace or machine discs

 

 

BRAKE FLUID CONTAMINATION

Symptom

Insufficient braking

Condition

Brake fluid contamination /material degradation

Cause

Leaking calipers or brake hose, contamination during fitment

Solution

Replace brake pads and repair leak

 

 

OVERHEATING

Symptom

Squeal, Grinding noise

Condition

Overheating

Cause

Disc below minimum specification, sticky calipers, product used outside design parameters e.g. overloading, racing

Solution

Replace brake pads and discs

 

 

FOREIGN OBJECT IN FRICTION MATERIAL

Symptom

Squeal, grinding

Condition

Foreign object in friction material, groove in disc

Cause

Embedded particle in material (manufacturing defect)

Solution

Remove object or replace pads, machine or replace disc if necessary

 

 

BEND BACKING PLATE

Symptom

Pads not fitting

Condition

Bent backing plate, delamination

Cause

Pads not fitted correctly, wrong part number

Solution

Replace pads, clean caliper and fit correctly

 

 

FITTED BACK TO FRONT

Symptom

Grinding

Condition

Pad fitted back to front, disc worn

Cause

Pads not fitted correctly

Solution

Replace pads, fit correctly, replace or machine discs if necessary

 

 

ANGLED WEAR

Symptom

None

Condition

Angled wear

Cause

Caliper slide pins or sticky caliper piston, worn wheel bearings

Solution

Check wheel bearings, Repair or replace caliper and replace brake pads

 

 

UNEVEN WEAR

Symptom

Wheel rim gets very hot

Condition

Uneven wear

Cause

Seized caliper piston or seized slide pins

Solution

Repair caliper and replace pads

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