Front brake disc - check - MGF trophy (Brakes) (page 2 of 2)

4. At 4 points around disc, measure disc thickness using a micrometer; renew disc if less than service limit. Disc thickness, NEW = 24 mm. Service limit = 22 mm.

5. Position a suitable spacer to each wheel stud and secure brake disc using wheel nuts. Tighten wheel nuts in a diagonal sequence to 70 Nm.
6. Set dial test indicator 6 mm from disc outer edge.
7. Zero dial test indicator and rotate brake disc one complete turn to measure disc run-out. Disc run-out limit = 0.05 mm.
8. If run-out exceeds limit, mark disc to drive flange location; remove wheel nuts, spacers and disc retaining screws. Remove disc, rotate 180°refit disc to drive flange. Fit and tighten disc retaining screws to 7 Nm, fit spacers and wheel nuts and tighten wheel nuts in a diagonal sequence to 70 Nm.
9. Renew disc if run-out exceeds limit even after re-positioning of disc on drive flange.

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

10. Untie caliper, position caliper to hub, fit and tighten bolts to 85 Nm.
11. Remove wheel nuts and spacers.
12. Apply foot brake several times to enable brake pads to position correctly.
13. Fit road wheel(s), fit wheel nuts and tighten in a diagonal sequence to 70 Nm.
14. Remove stand(s) and lower vehicle.