Removal Procedure
- Inspect the fluid level in the brake master cylinder reservoir.
- 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.
- 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.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
- Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
- Compress the brake caliper pistons.
- Clean all dirt and foreign material from the brake hose end.
- Remove the brake hose to caliper bolt from the brake caliper.
- Remove and discard the 2 copper brake hose gaskets. These gaskets may be stuck to the brake caliper housing or the brake hose end.
- Remove the caliper guide pin bolts.
- Remove the brake caliper from the vehicle.
- Inspect the caliper assembly. Refer to Brake Caliper Inspection .
| • | Install a large C-clamp over the top of the caliper housing and against the back of the outboard pad. |
| • | Slowly tighten the C-clamp until the pistons are pushed completely into the caliper bores. |
| • | Remove the C-clamp from the caliper. |
Important: Install a rubber cap or plug to the exposed brake pipe fitting end to prevent brake fluid loss and contamination.
Installation Procedure
- If you are installing new brake pads use a C-clamp in order to compress the pistons to the bottom of the caliper bores. Use the old brake pad, a metal plate or a wooden block across the face of the pistons in order to protect the pistons and the caliper boots.
- Ensure that the caliper boots are below the level of the face of both pistons.
- Install the brake caliper to the brake caliper mounting bracket.
- Perform the following procedure before installing the caliper guide pin bolts.
- Install the brake caliper mounting bolts.
- Tighten the brake caliper guide pin bolts.
- Remove the rubber cap or plug from the exposed brake hose fitting end.
- Assemble the 2 new copper brake hose gaskets and the brake hose to caliper bolt to the brake hose.
- Connect the brake hose at the caliper by installing the brake hose to caliper bolt.
- Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding in Hydraulic Brakes.
- Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
- Lower the vehicle.
Important: Use denatured alcohol to clean the outside surface of caliper boots before installing new brake pads.
Important: Use a small flat-bladed tool and lift the inner edge of the caliper boots next to both pistons to release any trapped air.
| 4.1. | Remove all traces of the original adhesive patch. |
| 4.2. | Clean the threads of the bolt with brake parts cleaner or the equivalent and allow to dry. |
| 4.3. | Apply Threadlocker GM P/N 12345493 (Canadian P/N 10953488) to the threads of the bolt. |
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the brake caliper guide pin bolts to 42 N·m (31 lb ft)
.
Important: Install 2 new copper brake hose gaskets.
Tighten
Tighten the brake hose to caliper bolt to 40 N·m (30 lb ft).
