This is a general guide; always consult your vehicle's repair manual for specific torque specifications and procedures.
Tools You'll Need:
* Jack and jack stands (essential for safety!)
* Lug wrench
* Wheel chocks
* Socket wrench set (metric)
* Wrenches (metric)
* Brake caliper compression tool (essential to retract the piston)
* C-clamp (can sometimes substitute for caliper compression tool)
* Pliers
* Wire brush
* Brake cleaner
* New brake pads
* New brake hardware (clips and pins, if needed)
* Grease (for caliper pins)
* Safety glasses
* Gloves
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Raise the rear of the car using the jack and securely place it on jack stands. Never work under a car supported only by a jack.
2. Remove the Wheel: Remove the lug nuts and carefully take off the wheel.
3. Inspect the Brake System: Examine the brake pads, rotors, and calipers for wear and tear. Take note of the condition of the caliper slides and boots.
4. Remove the Brake Caliper: There are usually two bolts holding the caliper to the caliper bracket. Unscrew these bolts and carefully remove the caliper. Support the caliper with a wire or bungee cord to prevent it from hanging by the brake hose. This prevents stressing the brake line.
5. Compress the Caliper Piston: Using the caliper compression tool, carefully compress the piston back into the caliper. This creates space for the new, thicker brake pads. Be careful not to damage the piston seal. If you're using a C-clamp, be very gentle and use a block of wood to distribute pressure evenly.
6. Remove the Old Brake Pads: The old pads should now slide out. Remove any old hardware (clips, pins) and inspect them. Replace if needed.
7. Clean the Caliper and Bracket: Use a wire brush to clean the caliper bracket and the caliper slides. Clean everything thoroughly with brake cleaner.
8. Install the New Brake Pads: Install the new brake pads into the caliper bracket.
9. Grease Caliper Pins/Slides: If your caliper uses sliding pins, lubricate them with high-temperature brake grease.
10. Reinstall the Caliper: Reinstall the caliper onto the bracket, ensuring the pads are correctly seated. Tighten the caliper bolts to the manufacturer's specified torque.
11. Reinstall the Wheel: Replace the wheel and tighten the lug nuts. Lower the vehicle.
12. Pump the Brakes: Get back in the car and firmly pump the brake pedal several times to ensure the brakes are working correctly.
13. Test Drive: Take a short test drive to ensure the brakes are functioning properly. Listen for any unusual noises.
Important Considerations:
* Drum Brakes: If your Buick Park Avenue has rear drum brakes (less likely on a '98 model), the procedure is significantly different and more involved. You'll need to remove the drum, replace the shoes, and adjust the brakes.
* Rotor Resurfacing/Replacement: If your rotors are worn or scored, you may need to have them resurfaced or replaced.
* Brake Fluid: While this procedure doesn't typically involve brake fluid changes, it's a good idea to check your brake fluid level regularly.
Again, if you are unsure about any of these steps, please seek professional help. Improperly installed brakes can be incredibly dangerous. Consult your owner's manual or a reputable repair manual for detailed instructions specific to your vehicle.
