Front brake disc - check (Brakes)

FRONT BRAKE DISC - CHECK

Service repair no - 70.10.14

1. Raise front of vehicle.

WARNING: Support on safety stands.

2. Remove road wheel(s).

3. Remove lower guide pin bolt from caliper housing, pivot housing upwards and secure.

4. Remove 2 brake pads, shims and retainers from caliper carrier.
5. Inspect disc surface for damage or cracks. Clean disc thoroughly and remove all rust.

Disc thickness and parallelism

6. Using a micrometer positioned 10 mm from outer edge of disc, measure thickness of disc at four points. Disc thickness Solid disc: New = 12.9 - 13.1 mm Service limit = 11.0 mm Ventilated disc: New = 20.9 - 21.1 mm Service limit = 19.0 mm Maximum thickness variation = 0.015 mm.
7. Renew disc if below service limit.

CAUTION: Brake discs must be renewed in pairs unless one disc requires changing before 1000 miles (1500 km) from new.

NOTE: Brake discs can be refaced using an on car disc lathe providing the disc thickness is sufficiently great to be 1 mm over service limit after machining.