Lateral Runout (LRO) - Rear

Check the rotor for lateral runout using the following procedure:

^ Tools Required
- J8001 Dial Indicator Set

1. Remove the tire and the wheel.
2. Tighten the wheel nuts so that the rotor is tight against the axle flange.
3. Clean the rotor surface.





4. Install the J8001 Dial Indicator so that the dial indicator button contacts the rotor surface about 13 mm (0.5 inch) from the outer edge.
5. Push in the rear axle while setting the dial indicator to zero.
6. While maintaining the inward pressure, turn the rotor one complete revolution.
7. Observe the lateral runout on the dial indicator. The total indicator runout (TIR) should not exceed 0.10 mm (0.004 inch).
8. In some cases, excessive lateral runout can be rectified by indexing the rotor. Move the rotor one or two wheel bolt positions from the original position.
9. If the lateral runout still exceeds 0.10 mm (0.004 inch), check the rear axle shaft flange for excessive lateral runout, or looseness.
9.1. Remove the brake rotor.
9.2. Reposition the J8001 Dial Indicator so that the button contacts the surface of the axle shaft flange.
9.3. Push the axle shaft flange inward while turning the axle shaft flange one full revolution.
9.4. Continue pushing in the axle shaft flange while setting the dial indicator to zero.
9.5. While maintaining the inward pressure, rotate the axle shaft flange one complete revolution.
9.6. Note the lateral runout.
9.7. If the axle shaft flange lateral runout exceeds 0.05 mm (0.002 inch), replace the rear axle shaft.
9.8. If the axle shaft flange lateral runout is within specifications, refinish or replace the rotor.