I will outline the procedure for disc brakes, as they are more common. Do NOT attempt this if you have drum brakes without finding a specific guide for your vehicle's drum brake system.
Tools You'll Need:
* Jack and jack stands (SAFETY FIRST: Never work under a vehicle supported only by a jack.)
* Lug wrench
* Wheel chocks
* Socket wrench and sockets (likely 13mm, 15mm, and 18mm, but check your specific vehicle's specifications)
* C-clamp or caliper compression tool
* Brake cleaner
* Anti-seize lubricant (optional, but recommended)
* New rear brake pads
* Penetrating oil (like PB Blaster)
* Gloves
* Safety glasses
Procedure (Disc Brakes):
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Use jack stands to securely lift the rear of the vehicle.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Expose the Caliper: You should now see the brake caliper, which is clamped around the rotor.
4. Compress the Caliper Piston: This is crucial. Use a C-clamp or caliper compression tool to slowly push the caliper piston back into its bore. You may need to turn the piston as you compress it. This creates space for the new, thicker brake pads. Be careful not to damage the piston or its boot. Penetrating oil can help if the piston is stiff.
5. Remove the Brake Pads: Usually, there are retaining clips or pins holding the brake pads in place. These might require a small screwdriver or socket to remove. Once removed, the old brake pads should slide out.
6. Clean the Caliper and Mounting Brackets: Use brake cleaner to thoroughly clean the caliper, caliper bracket, and sliding pins (if applicable).
7. Install the New Brake Pads: Insert the new brake pads into their respective slots. Make sure they slide in easily and are properly seated. Reinstall any retaining clips or pins.
8. Reinstall the Caliper: Carefully mount the caliper back onto the brake bracket. If your caliper uses sliding pins, lubricate them with anti-seize lubricant.
9. Reinstall the Wheel and Lug Nuts: Put the wheel back on and tighten the lug nuts to specification (check your owner's manual).
10. Lower the Vehicle: Carefully lower the vehicle using the jack stands. Once on the ground, fully tighten the lug nuts.
11. Pump the Brakes: Get back in your vehicle and gently pump the brake pedal several times to engage the new pads.
12. Test Drive: Take a short test drive to ensure the brakes are working correctly.
Important Considerations:
* Rotor Inspection: Inspect the brake rotors for wear and tear. If they're excessively worn or damaged, they need to be replaced as well.
* Brake Fluid: You should not need to bleed your brakes after replacing the pads, but it's a good idea to check your brake fluid level and top it off if necessary.
* Professional Help: If you're uncomfortable performing this repair yourself, take your vehicle to a qualified mechanic. Brake systems are critical for safety.
This is a general guide. Always refer to your vehicle's repair manual for specific instructions and torque specifications. Incorrect installation can lead to brake failure and serious injury. If you are not mechanically inclined, it is best to seek professional help.
