Select Language

Brake pads trouble tracers

Pad Contamination

trouble-tracers-pads-padcontamination
APPEARANCE

Friction material is contaminated with either oil, grease or brake fuid

CAUSE

Spillage during maintenance, or fuid that has leaked from the caliper

EFFECT
  • The vehicle pulls to one side during braking
  • Reduction in braking performance
REMEDY
  • Identify and repair cause of contamination
  • Replace the brake pad set

Glazing

trouble-tracers-pads-glazing
APPEARANCE

The brake pad friction material is glazed

CAUSE
  • The brake pad friction material is glazed
  • Overly harsh braking during the bedding-in period
EFFECT

Temporary reductions in brake performance

REMEDY
  • If light glazing is evident, no action is required
  • If heavy glazing is evident, replace brake pad set
  • Check the disc condition

Uneven Wear - Wear Lip

trouble-tracers-pads-uneven-wear
APPEARANCE

Uneven wear on the pad surface

CAUSE

An irregularly worn brake disc or "wear lip" on the disc will cause this pattern of wear on the brake pad

EFFECT
  • Squeal and Judder
  • Premature pad wear
REMEDY

Replace brake discs and pads

Black Plate Damage

trouble-tracers-pads-blackplate
APPEARANCE

Damaged back plate

CAUSE

Incorrect assembly, or excessive force used during fitting

EFFECT
  • Braking efficiency
  • Irregular pad wear
  • Noise & judder
REMEDY

Replace the brake pad set

Uneven Wear Within a Set

trouble-tracers-pads-uneven-wear-withinset
APPEARANCE

One or more brake pads within an axle set is excessively worn

CAUSE

The caliper guide pins or piston is sticking

EFFECT
  • The brake pulls to one side
  • Uneven & overly rapid pad wear
REMEDY
  • Maintain all caliper slides and pistons
  • Replace pads and check replace discs if necessary

 

Rusty Pads

trouble-tracers-pads-rustypads
APPEARANCE

Rust between the friction material and back plate

CAUSE

A brake pad sticking in the caliper bracket when braking flexes the back plate, cracking the friction material. Corrosion worsens this, separating the friction material and back plate

EFFECT
  • Noise and soft pedal feel
  • Once material has separated, brakes will not work
REMEDY
  • Replace brake pad set
  • Clean and maintain caliper to ensure the pad fits freely into the caliper during installation

 

Tapered Pads

trouble-tracers-pads-taperedpads
APPEARANCE

Uneven wear or tapered pads

CAUSE
  • The caliper is distorted and the caliper slides are sticking
  • Excessive caliper clearance
EFFECT
  • Premature pad wear and noise while braking
  • Uneven braking pressure
REMEDY

Replace pad set and maintain & service caliper
Note: Some vehicles use pads that are tapered by design. Refer to vehicle application to determine if they are outside normal degree of taper

Incorrect Pad Fitting

trouble-tracers-pads-incorrectpadfitting
APPEARANCE

Damaged pads

CAUSE
  • These "handed" pads are not identical to each other within the set, and need to be fitted to either the inner or outer side of the caliper
  • When fitted incorrectly, the pads will be damaged
EFFECT
  • Damaged pads
  • Reduced brake performance
REMEDY

Replace pad set to manufacturers instructions as per the inserted diagram

Uneven Wear - Disc Scoring

trouble-tracers-pads-uneven-wear-discscoring
aPPearance

Uneven wear pattern on the pad

cause
  • Incomplete contact between brake pad and disc
  • Disc scoring due to dust or excessive wear
  • New pads fitted to a worn disc may also cause this
effect
  • Squeal and judder
  • Braking efficiency
remedy

Replace both brake pads and brake discs

 

denaturinG

trouble-tracers-pads-denaturing
aPPearance

Partially charred or burnt friction material (will show whitish outer edges)

cause

Prolonged excessive pad temperature due to intensive use or dragging of the brake pad on the disc

effect
  • Reduction in initial brake efficiency
  • Excessive material deterioration and abnormal wear
  • Material becomes brittle, chips and cracks
remedy
  • Investigate cause for overheating of brake pad
  • If damage is not excessive, pads will be effective under normal use
  • If the damage is extensive replace brake pad set

 

Cracked Pads

trouble-tracers-pads-crackedpads
aPPearance

Small cracks in the centre of the pad

cause

The cracks indicate that the caliper is sticking. The piston bends the back plate causing the back plate to flex, cracking the friction material

effect
  • Noise while braking
  • Uneven pad wear
  • Vehicle pulling to one side during braking
  • Overheating on 1 side of the vehicle
remedy
  • Maintain and service the caliper
  • Replace the brake pad set

 

Edge Crumbling

trouble-tracers-pads-edgecrumbling
aPPearance

Uneven wear pattern on the pad

cause

Brake pad is sticking within the caliper causing the brake pad to stay in contact with the disc with associated excessive pad temperature

effect

Pad surface may glaze reducing brake performance

remedy
  • Investigate cause of caliper sticking
  • Maintain the caliper
  • Replace the brake pad set

 

worn out pads

trouble-tracers-pads-wornoutpads
aPPearance

The friction material is completely worn out

cause

There has been no regular check of pad wear or proper brake maintenance

effect
  • The vehicle pulls to one side during braking
  • Damage to the disc
  • High squeal and other brake noise
remedy
  • Check the disc for damage
  • Replace pad set and the disc if it has suffered damage

 

 

Metal Pick Up

trouble-tracers-pads-crackedpads

 

aPPearance

Metal pick-up (or ingrained metal) on the friction surface

cause

During normal braking small particles of the disc surface break off. Typically these are burnt off by the intense heat as dust. During extremely wet conditions these are quenched, cooled fast to solid material, and adhere to the brake pad surface

effect

This generally has no detrimental effect on braking performance, however in extreme cases, it can cause disc damage or brake squeal

remedy

In extreme cases, replace discs and pads

 

Pad Contamination

trouble-tracers-pads-padcontamination
APPEARANCE

Friction material is contaminated with either oil, grease or brake fuid

CAUSE

Spillage during maintenance, or fuid that has leaked from the caliper

EFFECT
  • The vehicle pulls to one side during braking
  • Reduction in braking performance
REMEDY
  • Identify and repair cause of contamination
  • Replace the brake pad set

Glazing

trouble-tracers-pads-glazing
APPEARANCE

The brake pad friction material is glazed

CAUSE
  • The brake pad friction material is glazed
  • Overly harsh braking during the bedding-in period
EFFECT

Temporary reductions in brake performance

REMEDY
  • If light glazing is evident, no action is required
  • If heavy glazing is evident, replace brake pad set
  • Check the disc condition

Uneven Wear - Wear Lip

trouble-tracers-pads-uneven-wear
APPEARANCE

Uneven wear on the pad surface

CAUSE

An irregularly worn brake disc or "wear lip" on the disc will cause this pattern of wear on the brake pad

EFFECT
  • Squeal and Judder
  • Premature pad wear
REMEDY

Replace brake discs and pads

Black Plate Damage

trouble-tracers-pads-blackplate
APPEARANCE

Damaged back plate

CAUSE

Incorrect assembly, or excessive force used during fitting

EFFECT
  • Braking efficiency
  • Irregular pad wear
  • Noise & judder
REMEDY

Replace the brake pad set

Uneven Wear Within a Set

trouble-tracers-pads-uneven-wear-withinset
APPEARANCE

One or more brake pads within an axle set is excessively worn

CAUSE

The caliper guide pins or piston is sticking

EFFECT
  • The brake pulls to one side
  • Uneven & overly rapid pad wear
REMEDY
  • Maintain all caliper slides and pistons
  • Replace pads and check replace discs if necessary

 

Rusty Pads

trouble-tracers-pads-rustypads
APPEARANCE

Rust between the friction material and back plate

CAUSE

A brake pad sticking in the caliper bracket when braking flexes the back plate, cracking the friction material. Corrosion worsens this, separating the friction material and back plate

EFFECT
  • Noise and soft pedal feel
  • Once material has separated, brakes will not work
REMEDY
  • Replace brake pad set
  • Clean and maintain caliper to ensure the pad fits freely into the caliper during installation

 

Tapered Pads

trouble-tracers-pads-taperedpads
APPEARANCE

Uneven wear or tapered pads

CAUSE
  • The caliper is distorted and the caliper slides are sticking
  • Excessive caliper clearance
EFFECT
  • Premature pad wear and noise while braking
  • Uneven braking pressure
REMEDY

Replace pad set and maintain & service caliper
Note: Some vehicles use pads that are tapered by design. Refer to vehicle application to determine if they are outside normal degree of taper

Incorrect Pad Fitting

trouble-tracers-pads-incorrectpadfitting
APPEARANCE

Damaged pads

CAUSE
  • These "handed" pads are not identical to each other within the set, and need to be fitted to either the inner or outer side of the caliper
  • When fitted incorrectly, the pads will be damaged
EFFECT
  • Damaged pads
  • Reduced brake performance
REMEDY

Replace pad set to manufacturers instructions as per the inserted diagram

Uneven Wear - Disc Scoring

trouble-tracers-pads-uneven-wear-discscoring
aPPearance

Uneven wear pattern on the pad

cause
  • Incomplete contact between brake pad and disc
  • Disc scoring due to dust or excessive wear
  • New pads fitted to a worn disc may also cause this
effect
  • Squeal and judder
  • Braking efficiency
remedy

Replace both brake pads and brake discs

 

denaturinG

trouble-tracers-pads-denaturing
aPPearance

Partially charred or burnt friction material (will show whitish outer edges)

cause

Prolonged excessive pad temperature due to intensive use or dragging of the brake pad on the disc

effect
  • Reduction in initial brake efficiency
  • Excessive material deterioration and abnormal wear
  • Material becomes brittle, chips and cracks
remedy
  • Investigate cause for overheating of brake pad
  • If damage is not excessive, pads will be effective under normal use
  • If the damage is extensive replace brake pad set

 

Cracked Pads

trouble-tracers-pads-crackedpads
aPPearance

Small cracks in the centre of the pad

cause

The cracks indicate that the caliper is sticking. The piston bends the back plate causing the back plate to flex, cracking the friction material

effect
  • Noise while braking
  • Uneven pad wear
  • Vehicle pulling to one side during braking
  • Overheating on 1 side of the vehicle
remedy
  • Maintain and service the caliper
  • Replace the brake pad set

 

Edge Crumbling

trouble-tracers-pads-edgecrumbling
aPPearance

Uneven wear pattern on the pad

cause

Brake pad is sticking within the caliper causing the brake pad to stay in contact with the disc with associated excessive pad temperature

effect

Pad surface may glaze reducing brake performance

remedy
  • Investigate cause of caliper sticking
  • Maintain the caliper
  • Replace the brake pad set

 

worn out pads

trouble-tracers-pads-wornoutpads
aPPearance

The friction material is completely worn out

cause

There has been no regular check of pad wear or proper brake maintenance

effect
  • The vehicle pulls to one side during braking
  • Damage to the disc
  • High squeal and other brake noise
remedy
  • Check the disc for damage
  • Replace pad set and the disc if it has suffered damage

 

 

Metal Pick Up

trouble-tracers-pads-crackedpads

 

aPPearance

Metal pick-up (or ingrained metal) on the friction surface

cause

During normal braking small particles of the disc surface break off. Typically these are burnt off by the intense heat as dust. During extremely wet conditions these are quenched, cooled fast to solid material, and adhere to the brake pad surface

effect

This generally has no detrimental effect on braking performance, however in extreme cases, it can cause disc damage or brake squeal

remedy

In extreme cases, replace discs and pads

 

Back to All Symptoms