Tools You'll Likely Need:
* Socket set: To remove the caliper.
* Wrench(es): To remove caliper bolts and possibly other brake components.
* C-clamp (optional but helpful): To compress the caliper piston.
* Brake caliper piston compressor tool: Highly recommended to avoid damaging the piston seals.
* New brake pads (if needed): Often, this is done during a pad change.
* Clean rags or shop towels: To keep things clean.
* Penetrating oil (PB Blaster, etc.): To help loosen rusted bolts.
Procedure:
1. Safety First: Engage the parking brake firmly. Chock the rear wheels. Wear safety glasses.
2. Remove the Wheel: Loosen the lug nuts before jacking up the vehicle. Then, safely lift the vehicle and remove the wheel.
3. Remove the Caliper:
* Locate and remove the caliper bolts. These are usually 13mm or 14mm. Penetrating oil may be necessary if they're stuck.
* Carefully remove the caliper. You may need to support it with a wire or bungee cord to avoid stressing the brake hose.
4. Compress the Caliper Piston:
* Crucial Step: Use a brake caliper piston compressor tool to push the piston back into the caliper. Never use a screwdriver or other makeshift tool – you risk damaging the piston seals. Turn the piston slowly and steadily. You may need to remove old brake fluid as it is expelled.
5. Replace Brake Pads (if needed): This is a common time to replace worn brake pads.
6. Install the Retaining Clip: The exact method depends on the specific type of clip and caliper design. However, the general principle is the same. The clip usually goes over a pin or tab securing the brake pad to the caliper. Carefully align the clip and press it into place. It should snap in securely. Sometimes a small amount of persuasion (with a small flathead screwdriver or similar) is required, but be gentle to prevent damage.
7. Reinstall the Caliper: Carefully mount the caliper back onto the caliper bracket, ensuring the pads are properly seated. Tighten the caliper bolts to the manufacturer's specified torque.
8. Reinstall the Wheel: Tighten the lug nuts in a star pattern to ensure even pressure. Lower the vehicle.
9. Test Brakes: Pump the brake pedal several times to build up pressure. Test the brakes carefully in a safe, open area before driving normally. If you feel any sponginess or unusual behavior, have your brakes inspected by a professional.
Important Notes:
* Bleeding the Brakes: If you have to significantly compress the piston or replace brake fluid, you may need to bleed the brakes afterward to remove air bubbles from the brake lines.
* Professional Help: If you're uncomfortable performing this task, take your vehicle to a qualified mechanic. Brake repair is crucial for safety.
* Parts: Make sure you have the correct retaining clip for your specific caliper model.
This is a general guide. Always refer to your vehicle's repair manual for specific instructions and torque specifications. Improper brake repair can be extremely dangerous.
