Measuring Rotor Surface Runout (Front or Rear)

1. Remove the tire, caliper and brake pads. Install the wheel nuts onto the studs to hold the rotor positively in place. Tighten the nuts uniformly.

2. Clean the rotor with MOPAR brake parts cleaner p/n 04897150AA.





3. Using a dial indicator, measure the runout of the rotor approximately 10 mm (0.40 in) from the outer circumference (Figure 7). Rotate rotor while watching dial indicator readings.

4. Rotor runout should not exceed 0.03 mm (0.0012 in). If runout exceeds this measurement, resurface the rotor with the on-car hub mounted brake lathe.