Rear Brake Caliper Replacement (JH9)
Rear Brake Caliper Replacement (JH9)
Removal Procedure
Warning:
Refer to Brake Dust Warning Brake Dust Warning.
Warning:
Refer to Brake Fluid Irritant Warning Brake Fluid Irritant Warning.
1. Inspect the fluid level in the brake master cylinder reservoir.
2. If the brake fluid level is midway between the maximum-full point and the minimum allowable level then no brake fluid needs to be removed from the reservoir before proceeding.
3. If the brake fluid level is higher than midway between the maximum-full point and the minimum allowable level then remove brake fluid to the midway point before proceeding.
4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle Service and Repair.
5. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation Service and Repair.
6. Position a large C-clamp against the outboard disc brake pad backing plate and over the rear of the brake caliper body.
7. Using the C-clamp, slowly and evenly bottom the brake caliper pistons into the brake caliper bores.
8. Remove the brake hose fitting bolt (1).
Note:
Do not reuse the brake hose fitting gaskets.
9. Remove and discard the brake hose fitting gaskets (2) from the brake hose (3).
Cap the brake hose fitting to prevent brake fluid loss and contamination.
10. Remove the brake caliper bracket bolts (1).
11. Remove the brake caliper and bracket assembly.
12. Remove the outer brake pad (1).
13. Remove the inner brake pad (2).
14. Remove the brake pad springs (1).
Note:
Do not remove the brake caliper guide pins unless replacement is required.
15. Slide the brake caliper (1) off of the brake caliper guide pins and the caliper bracket.
16. Inspect the brake caliper mounting and hardware for damage and wear. Refer to Rear Disc Brake Mounting and Hardware Inspection (With Single Rear Wheel) Rear Disc Brake Mounting and Hardware Inspection (With Single Rear Wheel)Rear Disc Brake Mounting and Hardware Inspection (With Dual Rear Wheel) Rear Disc Brake Mounting and Hardware Inspection (With Dual Rear Wheel).
17. Remove the brake caliper guide pin seals (1) and the brake caliper guide pin caps (2).
Installation Procedure
1. Apply a light coat of high temperature silicone brake lubricant to the brake caliper guide pin bores.
2. Install the brake caliper guide pin seals (1)
Ensure the brake caliper guide pin seals are fully seated in the groove of the brake caliper housing.
3. Install the brake caliper guide pin caps (2).
Ensure the brake caliper guide pin caps are fully seated in the groove of the brake caliper housing.
Note:
Do not remove the brake caliper guide pins unless replacement is required.
4. Slide the brake caliper (1) on to the brake caliper guide pins and the caliper bracket.
Ensure the brake caliper guide pin seals are fully seated in the groove of the brake caliper bracket.
5. Install the brake pad springs (1).
6. Prepare the brake caliper bracket bolts and the rear axle threaded holes for assembly.
* Clean the brake caliper bracket bolts of any threadlocking residue
* Clean the rear axle threaded holes of any threadlocking residue with denatured alcohol and allow to dry
7. Apply threadlocker GM P/N 89021297 (Canadian P/N 10953488) to 2/3 of the threaded length of the brake caliper bracket bolt.
8. Allow the threadlocker to cure approximately 10 minutes before assembly.
9. Position the brake caliper and bracket assembly (1) to the rear axle.
Caution:
Refer to Fastener Caution Fastener Caution.
10. Install the brake caliper bracket bolts (1) and tighten to 300 Nm (221 lb ft).
11. Assemble the brake hose fitting bolt (1) and 2 new brake hose fitting gaskets (2) to the brake hose (3).
12. Tighten the brake hose fitting bolt to 40 Nm (30 lb ft).
13. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Pressure) Hydraulic Brake System Bleeding (Pressure)Hydraulic Brake System Bleeding (Manual) Hydraulic Brake System Bleeding (Manual).
14. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation Service and Repair.