G 1500 1/2 Ton Van V8-5.7L VIN R (1997)
Brake Rotor/Disc: Testing and Inspection
Thickness Variation Check
Check thickness variation by measuring the rotor thickness at four or more points, around the circumference of the rotor. Use a micrometer calibrated in
ten thousands of an inch. Make all measurements at the same distance in from the edge of the rotor. A rotor that varies in thickness by more than 0.013
mm (0.0005 inch) can cause pedal pulsation and/or front end vibration during brake applications. A rotor that does not meet these specifications should
be refinished or replaced.
