Tools You'll Need:
* Jack and jack stands
* Lug wrench
* Wheel chocks
* Socket wrench set (metric)
* Brake caliper piston compression tool (essential)
* C-clamp (sometimes used as an alternative to a specialized compression tool, but less ideal)
* Pliers
* Wire brush (for cleaning caliper surfaces)
* Brake cleaner
* New rear brake pads
* Grease (high-temp brake grease)
* Ratchet and extensions
* Torque wrench (critical for proper tightening)
Steps:
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Raise the rear of the vehicle using the jack and securely support it with jack stands. Remove the relevant wheel.
2. Inspect the Brakes: Before removing anything, visually inspect the brake pads, rotors, and calipers for wear and tear, damage, or corrosion. Note the condition for later assessment.
3. Remove the Caliper: Locate the caliper bolts (usually two) securing the caliper to the caliper bracket. Use the appropriate socket and carefully remove these bolts. Support the caliper with one hand as it gets heavy. You may need to gently twist or rock it to free it from the brake pads.
4. Compress the Caliper Piston: This is a crucial step. The new brake pads will be thicker than the old ones, so you need to compress the caliper piston to create space. Use the caliper piston compression tool – it's designed to avoid damaging the piston seal. Slowly and steadily compress the piston until there's enough room for the new pads. Never use brute force; if it’s difficult, you might be using the wrong tool or technique. Some people use a C-clamp, but it's riskier.
5. Remove the Old Brake Pads: The old brake pads should now slide out from the caliper bracket. If they're stuck, gently pry them out.
6. Clean: Use a wire brush to clean any corrosion or debris from the caliper bracket and caliper piston surfaces. Clean the caliper and bracket with brake cleaner.
7. Install New Brake Pads: Carefully install the new brake pads into the caliper bracket, making sure they're seated correctly.
8. Reinstall the Caliper: Reattach the caliper to the caliper bracket using the bolts. Tighten them to the manufacturer's specified torque (check your repair manual).
9. Reinstall the Wheel: Put the wheel back on and tighten the lug nuts. Lower the vehicle.
10. Torque Lug Nuts: Use a torque wrench to tighten the lug nuts to the manufacturer's specifications.
11. Pump the Brakes: Before driving, pump the brake pedal several times to ensure the brakes engage properly. Test the brakes carefully in a safe, open area.
12. Check for Leaks: After driving, check for any brake fluid leaks around the caliper.
Important Considerations:
* Rotors: Inspect the brake rotors for wear. If they're excessively worn or scored, they'll need to be replaced or resurfaced. This is usually done at a professional shop as it requires specialized equipment.
* Brake Fluid: If you notice low brake fluid levels, check for leaks and top up the fluid if necessary. Never run low on brake fluid.
* Professional Help: If you're uncomfortable with any of these steps, it's best to take your vehicle to a qualified mechanic. Brake repairs are crucial for safety.
This is a general guide. Always consult your vehicle's repair manual for specific instructions and torque specifications. Failure to follow proper procedures can lead to brake failure and serious injury.
