For 1990-2009 cars only
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
- Remove the wheels. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
- Clean the friction surfaces of the brake disc with denatured alcohol, or an equivalent approved brake cleaner.
- Inspect the friction surfaces of the brake disc for the following Braking Surface Conditions:
- If the friction surfaces of the brake disc exhibit one or more of the Braking Surface Conditions, the brake disc requires refinishing or replacement.
- Using a micrometer calibrated in thousandths-of-a-millimeter, or ten-thousandths-of-an-inch, measure and record the scoring depth of any grooves present on the brake disc friction surfaces.
- Compare the groove scoring depth recorded to the following specification:
- If the brake disc scoring depth exceeds the specification, or if too much scoring is present, the brake disc requires refinishing or replacement.
Caution: Refer to Safety Glasses Caution in the Preface section.
Caution: Refer to Vehicle Lifting Caution in the Preface section.
Caution: Refer to Brake Dust Caution in the Preface section.
| • | Heavy rust and/or pitting |
| • | Light surface rust can be removed with an abrasive disc. Heavy surface rust and/or pitting must be removed by refinishing the brake disc. |
| • | Cracks and/or heat spots |
| • | Too much blueing, discoloration |
Specification
Brake disc maximum allowable scoring: 1.50 mm
(0.060 in).
