Run - out exceeds limit (Brakes) (page 3 of 3)

8. Using a micrometer positioned 10 mm, 0.4 in from the outer edge of the disc, measure the the thickness of the disc at four points.

Data: Disc thickness:
Disc, new = 10 mm, 0.393 in
Disc, service limit = 8 mm, 0.314 in
Disc thickness variation = 0.015 mm, 0.0006 in.

9. Renew brake disc if below service limits or disc thickness variation is outside tolerances.

Note: Brake discs must be renewed in pairs, unless one disc requires changing at 1000 mile (1500 km) service. In this situation renewal of one disc is permissible.

10. Position dial test indicator 6 mm, 0.25 in from disc outer edge.
11. Rotate disc and measure disc run – out.
    Rear disc run – out limit = 0.060 mm , 0.0024 in.
12. If run – out exceeds limit, remove 2 screws retaining disc and remove disc from flange. Rotate disc 180° and refit disc to flange, securing disc with screws. Re – check run – out.
13. Renew disc if run – out exceeds limit even after repeated re – positioning of disc on hub.

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

14. Wipe pads and shims clean, then lightly grease backs of pads.
15. Fit shims to pads and fit pads.
16. Untie housing.
17. Position housing to carrier. Fit bolts and tighten to 32 Nm.
18. Position caliper shield. Fit bolts and tighten to 10 Nm.
19. Fit road wheel and tighten nuts to 100 Nm.
20. Remove stand(s) and lower vehicle.