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Rear Disc Brake Pads Replacement > < Rear Brake Caliper Replacement - with Dampener

Astra J

Rear Brake Caliper Hardware Replacement

Removal Procedure

Warning:  Refer to Brake Dust 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, 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 .
5. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .

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6. Remove the upper brake caliper pin bolt (1).
7. Remove the brake caliper vibration dampener (3).

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8. Remove the brake pads (1) from the caliper mounting bracket (2).

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9. Remove the brake pad retainer springs (1) from the caliper bracket (2).

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10. Remove the brake caliper guide pins (3) from the brake caliper mounting bracket (1).
11. Remove the brake caliper pin boots (2) from the brake caliper mounting bracket (1).

Installation Procedure


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1. Apply a thin coat of high temperature silicone lube to the brake caliper guide pin boots. Refer to Adhesives, Fluids, Lubricants, and Sealers for the recommended lubricant.
2. Install the brake caliper pin boots (2) into the brake caliper mounting bracket (1). Do not hammer the caliper pin boots into the bracket. Ensure that the caliper pin boots are fully seated in the bracket.
3. Apply a thin coat of high temperature silicone lube to the brake caliper guide pins.
4. Install the brake caliper guide pins (3) to the brake caliper mounting bracket (1).

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5. Ensure the brake pad hardware mating surfaces are clean.
6. Install the brake pad retainers (1) to the brake caliper bracket and apply a thin coat of high temperature silicone lube to the brake pad retainers.

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Note:  The wear sensor equipped disc brake pad must be mounted inboard of the rotor with the leading edge of the sensor facing the brake rotor during forward wheel rotation, or at the top of the pad when installed in vehicle position.
7. Install the brake pads (1) to the caliper bracket.

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8. Install the brake caliper (2) to the brake caliper bracket.

Caution: Refer to Fastener Caution .
9. Install the lower brake caliper pin bolt (1) and tighten to 28 N·m (20 lb ft) .
10. Install the brake caliper vibration dampener (3) and tighten to 28 N·m (20 lb ft) .

Note:  Position of brake caliper piston cavity MUST aligned horizontally to the embossed marking of brake caliper in order to prevent an appropriate installation.
11. Check position of piston cavity after assembling caliper.
12. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
13. Lower the vehicle.
14. With the engine OFF, gradually apply the brake pedal approximately 2/3 of its travel distance.
15. Slowly release the brake pedal.
16. Wait 15 seconds, then gradually apply the brake pedal approximately 2/3 of its travel distance again until a firm brake pedal apply is obtained. This will properly seat the brake caliper pistons and brake pads.
17. Fill the master cylinder auxiliary reservoir to the proper level. Refer to Master Cylinder Reservoir Filling .

Rear Disc Brake Pads Replacement > < Rear Brake Caliper Replacement - with Dampener