Operation CHARM: Car repair manuals for everyone.

Brake Rotor/Disc: Testing and Inspection

ON-CAR SERVICE

1. Install disc rotor by tightening the five wheel nuts.





2. Set a dial gauge on the disc rotor. Turn disc rotor to check runout.

NOTE: Make sure that dial gauge is set 5 mm (0.20 inch) inward of rotor outer perimeter.

Disc rotor runout limit: 0.075 mm (0.0030 inch)








3. Measure disc rotor thickness.

NOTE: Make sure that micrometer is set 5 mm (0.20 inch) inward of rotor outer perimeter.