Notice: Whenever the brake rotor has been separated from the wheel bearing flange, clean any rust or foreign material from the mating surface of the rotor and flange with the J 42450 hub cleaning kit. Failure to do this may result in increased lateral runout of the rotor and brake pulsation.

Inspect the lateral runout with the wheels still installed on the vehicle. This gives a much more accurate reading of the total indicated runout (TIR) under real braking conditions.

1. Clean the rotor surface.

Important: If the wheel must be removed, re-install the wheel nuts in order to retain the rotor. Tighten the wheel nuts to the correct tightening specifications following the wheel nut tightening sequence. Refer to Fastener Tightening Specifications in Tires and Wheels.

2. Fasten a dial indicator to the steering knuckle so that the indicator button contacts the rotor surface about 13 mm (0.5 in) from the outer edge.
3. Set the dial indicator to 0.
4. Turn the wheel one complete revolution.
5. Observe the runout indicated on the dial. The total indicated runout (TIR) must not exceed 0.08 mm (0.003 in).
6. Refinish or replace the rotor if the lateral runout exceeds the amount specified in the previous step.

Occasionally excessive lateral runout of the rotor may be improved by indexing the rotor on the hub one or two bolt positions from the original position. If the lateral runout cannot be corrected by indexing the rotor, check the hub and bearing assembly for excessive lateral runout or looseness.