Front Brake Caliper Replacement (JE5, JL9)

Front Brake Caliper Replacement (JE5, JL9)

Removal Procedure
Warning: Refer to Brake Dust Warning (Brake Dust Warning).

Warning: Refer to Brake Fluid Irritant Warning (Brake Fluid Irritant Warning).


Caution: Refer to Brake Fluid Effects on Paint and Electrical Components Caution (Vehicle Damage Warnings).

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, 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, 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. Install a C-clamp against the outer brake pad and the rear of the brake caliper body.
7. Slowly tighten the C-clamp until the brake caliper pistons are compressed into the brake caliper bores.




8. Using a backup wrench on the brake caliper guide pin, remove the brake caliper guide pin bolts (1).




9. Remove the brake hose fitting bolt (1).
10. Remove the brake hose fitting gaskets (2) and the brake hose (3).
Discard the brake hose fitting gaskets.




11. Remove the brake caliper (1).

Installation Procedure

1. Inspect the brake caliper guide pins, seals and brake pad springs for damage and/or corrosion. Refer to Brake Caliper Inspection (Testing and Inspection).




2. Install the brake caliper (1).

Caution: Refer to Fastener Caution (Fastener Caution).




3. Assemble the brake hose fitting bolt (1) and 2 new brake hose fitting gaskets (2) to the brake hose (3) and tighten the fitting bolt to 50 Nm (37 lb ft).

Note: If reusing the brake caliper guide pin bolts, the threads of the brake caliper guide pin bolts and the threads of the guide pins must be free of residue and debris prior to application of threadlocker in order to ensure proper adhesion and fastener retention.

4. If reusing the caliper pin bolts, prepare the bolts and the guide pins for assembly:

* Thoroughly clean the residue from the guide pin bolt threads by using denatured alcohol or equivalent and allow to dry.
* Thoroughly clean the residue from the guide pin threads by using denatured alcohol or equivalent and allow to dry.

5. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488), or equivalent to 2/3 of the threaded length of the brake caliper guide pin bolts. Ensure there are no gaps in the threadlocker along the length of the filled area of the bolts.
6. Allow the threadlocker to cure approximately 10 minutes before installation.




7. Using a backup wrench on the brake caliper guide pin, install the brake caliper guide pin bolts (1) and tighten to 32 Nm (24 lb ft).
8. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Manual) (Service and Repair)Hydraulic Brake System Bleeding (Pressure) (Service and Repair).
9. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation (Service and Repair).
10. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
11. Slowly release the brake pedal.
12. Wait 15 seconds, then repeat steps 10 and 11 until a firm brake pedal apply is obtained. This will properly seat the brake caliper pistons and brake pads.
13. Fill the brake master cylinder reservoir to the proper level. Refer to Master Cylinder Reservoir Filling (Master Cylinder Reservoir Filling).