Lateral Runout Check

Lateral Runout Check:

1. Clean surface of rotor (1).
2. Install wheel nuts to retain rotor (13). Tighten Wheel nuts (13) in a star-pattern to 140 Nm (100 ft. lbs.).
3. Fasten J 8001 to the steering knuckle so that indicator button contacts the rotor surface about 13 mm (0.5 inch) from the rotor edge.
4. Set J 8001 to zero.
5. Turn rotor (1) one complete revolution, and observe Total Indicated Runout (TIR). TIR should not be more than 0.15 mm (0.006 inch). In some cases, excessive lateral runout of the rotor (1) can be improved by indexing the rotor (1) on the hub one or two bolt positions from the original position. Indexing the rotor (1) requires removal and installation of the front brake caliper. Refer to Front Brake Caliper. If lateral runout cannot be corrected by indexing the rotor (1), check the hub and front wheel bearing for excessive lateral runout or looseness. If the hub and bearing lateral runout exceeds 0.040 mm (0.0015 inch) then replace the hub and bearing. If the lateral runout of the hub and bearing is within specifications then refinish or replace the rotor (1) a necessary.

NOTE: Whenever the rotor has been separated from the wheel bearing flange, clean any rust or foreign material from the mating surface of the wheel flange and brake rotor. Failure to do this may result in increased lateral runout of the rotor and brake pulsation. A rotor that does not meet the lateral runout specification should be resurfaced or replaced as necessary.