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Rotor Thickness Variation

GC0082141Courtesy of CHRYSLER GROUP, LLC

Thickness variation in a rotor's braking surface can result in pedal pulsation, chatter and surge. This can also be caused by excessive runout in the rotor or the hub.

Rotor thickness variation measurements should be made in conjunction with measuring runout. Measure thickness of the brake rotor (2) at 12 equal points around the rotor braking surface with a micrometer (1) at a radius approximately 25 mm (1 inch) from edge of rotor.

  1. If excessive rotor thickness variation is found, reface or replace brake rotor. Refer to STANDARD PROCEDURE  .
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