Disc Brake System: Testing and Inspection

Vibrations During Braking







Fault symptoms
Vibrations occur in the front of the vehicle in conjunction with braking.

Conditions
Car driven forwards and brake pedal depressed.

Diagnostic help
Vibration can have the following causes
- Excessive wheel hub run-out
- Excessive variation in the brake disc thickness.

Measure according to: Control measurement of the axial run-out and thickness variation of the disc.