Front Brake Disc Runout Check - Vehicles With: High Performance Brakes
Front Brake Disc Runout Check - Vehicles With: High Performance BrakesService Repair No - 70.12.15.01
Special Service Tools
1. Release the brake hose bracket from the wheel knuckle.
^ Remove the bolt.
2. LH side only: Disconnect the brake pad wear indicator sensor.
^ Release the lead from the clips.
3. Remove the brake pads.
^ Remove the 2 retaining pins.
^ Remove the anti-rattle spring.
^ Withdraw the brake pads.
4. CAUTION: Do not allow the brake caliper to hang on the brake hose.
Release the brake caliper and tie aside.
5. Measure the brake disc thickness at 4 points around the brake disc.
^ Renew the brake disc if the thickness is less than the service limit, or if the maximum thickness variation is exceeded. Brake disc thickness, NEW = 30 mm, Service limit = 27 mm.
6. Using the special tool, install a dial indicator gauge to the brake caliper lower mounting.
^ Position the dial indicator gauge plunger 5 mm in from the outer edge of the brake disc.
7. Install the wheel nuts.
^ Install spacer washers under the wheel nuts.
^ Tighten the wheel nuts to 140 Nm (103 ft. lbs.).
8. Rotate the brake disc one revolution to measure the brake disc run-out.
^ Brake disc run-out must not exceed 0.05 mm.
9. If the brake disc run-out is outside the limit. Remove the brake disc.
10. Make sure the brake disc and hub mating surfaces are clean.
11. Install the brake disc.
^ Tighten the Torx screw to 35 Nm (26 ft. lbs.).
12. Install the wheel nuts.
^ Tighten the wheel nuts to 140 Nm (103 ft. lbs.).
^ Install spacer washers under the wheel nuts.
13. Rotate the brake disc one revolution to measure the brake disc run-out.
^ Brake disc run-out must not exceed 0.05 mm.
14. If the brake disc run-out is still outside the limit, install a new brake disc and/or hub.
15. Remove the dial indicator gauge and the special tool.
16. Secure the brake caliper to the wheel knuckle.
^ Tighten the bolts to 275 Nm (203 ft. lbs.).
17. Secure the brake hose retaining bracket to the wheel knuckle. Tighten the bolt to 23 Nm (17 ft. lbs.).
18. WARNING: Do not use compressed air to clean brake components. Dust from friction materials can be harmful if inhaled.
Clean the components.
19. Inspect the caliper piston seals for damage.
20. Position a bleed jar containing a small quantity of approved brake fluid. Connect the bleed tube to the bleed screw and loosen the screw.
21. Press the pistons into the caliper housing.
^ Tighten the bleed screw to 19 Nm (14 ft. lbs.).
22. Repeat the above process for the other 2 pistons.
23. Disconnect the bleed tube and remove the jar.
24. Install the brake pads.
^ Position the anti-rattle spring.
^ Install the pins, making sure the pin collets are fully engaged in the caliper.
25. LH side only: Connect the brake pad wear indicator sensor.
^ Secure the lead in the clips.
26. Install the wheels and tires.
^ Tighten the wheel nuts to 140 Nm (103 ft. lbs.).
27. Depress the brake pedal several times, check the fluid level in the brake fluid reservoir and top-up with brake fluid if necessary.