Brake Rotor/Disc: Testing and Inspection

Note: Wheel bearing clearance must be OK for this inspection.



Run-out




- Mount brake disk with two bolts.
- Turn back brake linings (brake disk must not scrape).
- Mount a dial gauge on spring strut using a magnetic holder.
- Apply dial-gauge tip on outer edge of brake disk with light preload.
- Turn brake disk slowly and read lateral runout.
Thickness




- Measure thickness deviation at about 8 points on brake surface using a micrometer.
Specifications