Lumina V6-3.8L VIN K (1998)
Brake Rotor/Disc: Testing and Inspection
Brake Rotor Thickness Variation Check
Measure the rotor thickness at four or more points around the circumference of the rotor in order to inspect the thickness variation. Use a micrometer
calibrated in ten-thousandths of an inch. Inspect each measurement at the same distance from the edge of the rotor.
A rotor that varies in thickness by more than 0.013 mm (0.0005 inch) may cause pedal pulsation or front end vibration during brake applications.
Refinish or replace a rotor that does not meet the above specifications.
