Rear brake disc

REAR BRAKE DISC

Disc Runout Inspection

1. Raise rear of vehicle.

WARNING: Support on safety stands.

2. Remove road wheel(s).

A Dial indicator
B Wheel nut and plain washer

3. Remove the brake pads.
4. Inspect the disc surface for damage or cracks. Clean the disc thoroughly and remove all rust.
5. Use wheel nuts and suitable plain washers to hold the disc securely against the hub, then mount a dial indicator as shown and measure the runout at 10mm (0.4 in) from the outer edge of the disc.

Brake Disc Runout = 0.10mm (0.004 in)

6. If the disc is beyond the service limit, refinish the rotor.

Max. Refinishing Limit: 8.0mm (0.32 in)

Note: A new disc should be fitted it its runout is greater than 0.10mm (0.004 in)

Disc Thickness and Parallelism Inspection

1. Raise rear of vehicle.

WARNING: Support on safety stands.

2. Remove road wheel(s).

A Micrometer

3. Remove the brake pads.
4. Using a micrometer, measure disc thickness at eight points, approximately 45° apart and 10mm (0.4 in) in from the outer edge of the disc.

Brake Disc Thickness

Standard: 10mm (0.4 in)
Max. Refinishing Limit: 8mm (0.32 in)

Note: Replace the brake disc if the smallest measurement is less than the max. refinishing limit.

Brake Disc Parallelism: 0.015mm (0.0006 in) max.

The difference between any thickness measurements should not be more than specification.

5. If the disc is beyond the service limit for parallelism, refinish the rotor.