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.
- 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:
• | 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 |
- 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:
Specification
Brake disc maximum allowable scoring: 1.50 mm
(0.060 in).
- If the brake disc scoring depth exceeds the specification, or if too much
scoring is present, the brake disc requires refinishing or replacement.