Assemble outboard pistons FRONT BRAKE DISCS

Assemble outboard pistons FRONT BRAKE DISCS

13. Coat new fluid seal with brake fluid. Ease seal Service repair no - 70.10.10. into groove in bore using only fingers, ensuring it is properly seated. Fluid seal and groove are not Remove same in section, so when seal is seated it feels raised to touch at edge furthest away from mouth of bore.
14. Coat appropriate piston with brake fluid. Insert it squarely into bore by hand only. Do not tilt piston during insertion, leave approximately 8mm projecting from bore.
15. Coat new wiper seal with brake fluid and fit to new seal retainer. Slide assembly, seal first, over protruding piston and into bore recess. Use piston clamp to press home seal retainer and piston.

Mounting inboard pistons

16. Clamp outboard pistons and carry out same procedure for removing and fitting outboard pistons and seals, instructions 8 to 15.

Fit calipers and pads

17. Fit caliper, tighten bolts evenly to 82 Nm, 60 lbf/ft. Refit
18. Connect brake flexible hoses to caliper. Tighten to 15 Nm, 11 lbf/ft.
19. Remove hose clamps.
20. Insert pads. Fit pins and springs, secure using new split [cotter] pin.
21. Bleed brake system. See Brake System Bleed
22. Press brake pedal firmly several times to locate friction pads.
23. Fit road wheels, remove axle stands. Finally tighten road wheel nuts to 130 Nm, 96 lbf/ft.
24. Road test vehicle. Note that new friction pads Disc reclamation require ’bedding-in’, this may take several hundred miles before brakes are at maximum efficiency.
1. Remove hub assembly. See FRONT AXLE AND FINAL DRIVE, Repair, Front hub assembly
2. Remove 5 hub to disc bolts.
3. Tap disc to separate from hub.

4. Locate disc to hub.
5. Apply Loctite 270 to disc bolts and tighten to 73 Nm, 54 lbf/ft.
6. Check total disc runout with a dial indicator, this must not exceed 0,15 mm, 0.006 in. If necessary reposition disc.
7. Fit hub assembly See FRONT AXLE AND FINAL DRIVE, Repair, Front hub assembly
8. Check disc thickness. This dimension may be machined to minimum thickness of 22 mm, 0.875 in - ventilated discs. Machine equal amount off each face.

• NOTE: The disc MUST BE renewed if the
• minimum running thickness stamped on
• the disc is recorded.