Here's a general outline. This is NOT a substitute for a repair manual. Variations exist between models.
Tools You'll Likely Need:
* Jack and jack stands (Safety First! Never work under a car supported only by a jack.)
* Lug wrench
* Wheel chocks
* Socket wrench set (metric) with extensions and ratchets
* C-clamp or brake caliper piston compressor tool
* Brake cleaner
* Penetrating oil (like PB Blaster)
* Wire brush
* New rear brake pads (ensure you get the correct ones for your car!)
* Torque wrench (essential for proper tightening)
* Gloves
* Safety glasses
General Steps (Again, consult your repair manual for specifics):
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks on the front wheels. Raise the rear of the car using the jack and securely support it with jack stands.
2. Remove the Wheel: Remove the lug nuts and carefully take off the wheel.
3. Expose the Caliper: You'll likely see the brake caliper assembly bolted to the backing plate.
4. Remove the Caliper: Locate the caliper mounting bolts. They may be 12mm or 14mm. Use penetrating oil if needed to loosen them. Carefully remove the bolts and gently remove the caliper. You might need to support the caliper with a wire or bungee cord to keep it from hanging by the brake line.
5. Compress the Piston: The brake caliper piston needs to be compressed to make room for the new, thicker pads. Use a C-clamp or a specialized piston compressor tool to push the piston back into the caliper. Be careful not to damage the piston seal. Turn the piston slowly and evenly.
6. Remove Old Brake Pads: The old brake pads should now be easily removable. Inspect the brake rotors for wear and scoring. If they're excessively worn or damaged, they'll need to be replaced or resurfaced.
7. Install New Brake Pads: Carefully install the new brake pads into the caliper bracket. Make sure they slide easily and are properly seated.
8. Reinstall the Caliper: Carefully reinstall the caliper onto the backing plate, making sure the caliper slides freely and the brake pads are properly engaged against the rotor. Tighten the mounting bolts to the specified torque (check your repair manual!).
9. Reinstall the Wheel: Put the wheel back on and tighten the lug nuts snugly. Lower the vehicle. Then, using the lug wrench, tighten the lug nuts to the manufacturer's specified torque (check your repair manual!).
10. Pump the Brakes: Get back in the car, pump the brake pedal several times to ensure the pads are properly seated against the rotors. Check for any leaks.
11. Test Drive: Take a short test drive to confirm that the brakes are working correctly. If you feel anything unusual, such as a pulsing brake pedal or poor braking performance, have the brakes checked by a qualified mechanic immediately.
Important Considerations:
* Bleeding the Brakes: While unlikely to be necessary after a pad replacement, air can sometimes get into the brake lines. If you notice spongy brakes after reassembly, you may need to bleed the brakes. This is a more complex procedure requiring a helper and a brake bleeder kit.
* Rotor Resurfacing or Replacement: Always inspect the brake rotors for excessive wear or damage. If the rotors are badly scored or worn, they should be resurfaced (lathed) by a machine shop or replaced.
* Professional Help: If you're not comfortable with this task, it's best to have a qualified mechanic perform the brake pad replacement. Brake failure can have life-threatening consequences.
This information is for guidance only. Always consult your vehicle's repair manual for specific instructions and safety precautions. Failure to follow proper procedures can lead to brake failure and serious injury.
