Commander 4WD V8-4.7L VIN N (2006)
Variations in rotor thickness will cause pedal pulsation, noise and shudder.
Measure rotor thickness at a minimum of six points around the rotor face. Position the micrometer approximately 19 mm (3/4 inch) from the rotor
outer circumference for each measurement.
Thickness should not vary by more than 0.0127 mm (0.0005 inch) from point to point on the rotor. Refinish or replace the rotor if necessary.
REAR ROTOR LATERAL RUNOUT
Check rotor lateral runout whenever diagnosis indicates pedal pulsation and rapid, uneven brake lining wear.
The rotor must be securely clamped to the hub to ensure an accurate runout measurement. Secure the rotor with the wheel nuts and 4 or 5 large
diameter flat washers on each stud.
Use a dial indicator to check lateral runout. Maximum allowable lateral runout is 0.20 mm (0.00079 inch).
