Lateral Runout Check

NOTE: - Tools Required:
^ J-8001, or equivalent Dial Indicator Set.
^ J-26900-13, or equivalent Magnetic Base.

Measuring Rotor Lateral Runout:

1. Raise and suitably support vehicle.
2. Remove tire/wheel assembly.
3. Remove caliper.
4. Invert and install all wheel nuts to retain rotor.
5. Fasten a special tools to the strut so that the indicator button contacts the brake rotor about 10 mm (0.39 inch) from the rotor edge.
6. Zero the dial indicator set.
7. Move the rotor one complete revolution and observe the total indicated runout.
^ Rotor Lateral Runout (Maximum): 0.15 mm (0.006 inch)

If Lateral Runout Exceeds Specifications - clean wheel hub and rotor mating surfaces and measure again. If lateral runout still exceeds specifications, index 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 play.

NOTE:
^ If hub and bearing assembly are within specifications, check rotor tolerance and surface finish. Rotor Tolerance and Surface Finish

^ A rotor that does not meet the lateral runout specification should be refinished or replaced as necessary. Service and Repair