This process is a general guide. Consult a repair manual specific to your 1998 Cadillac Catera for precise details and torque specifications. Pictures and diagrams in a repair manual are invaluable.
Tools you'll likely need:
* Jack and jack stands
* Wheel chocks
* Lug wrench
* Socket wrench and sockets (various sizes, probably including 13mm, 15mm, possibly others)
* C-clamp or caliper piston compressor tool
* Penetrating oil (like PB Blaster)
* Wire brush or brake cleaner
* Ratchet and extensions
Procedure:
1. Safety First: Park the car on a level surface, engage the parking brake, and chock the front wheels. Raise the rear of the car using the jack and securely support it with jack stands. Remove the wheel.
2. Expose the Caliper: You should now see the rear brake caliper. There may be a dust shield or cover; remove it if present (sometimes just by carefully prying).
3. Locate the Caliper Bolts: The caliper is typically held on by two bolts. Locate these bolts and spray them with penetrating oil to help loosen them. Allow some time for the oil to penetrate.
4. Remove the Caliper: Using the appropriate socket, carefully remove the caliper bolts. The caliper should now swing freely. Be careful not to let the caliper hang by the brake line. You may need to support it with a bungee cord or wire to prevent stressing the brake line.
5. Remove the Brake Pads: The brake pads are held in place by friction and possibly a retaining clip or pin. They should slide out relatively easily. If stuck, gently pry them apart from the caliper.
6. Compress the Caliper Piston: Before installing the new pads, you *must* compress the caliper piston. This is crucial to allow the new pads to fit properly. A C-clamp is a common tool, but specialized caliper piston compression tools are available and make the job easier and safer. Important: Compress the piston slowly and evenly to avoid damaging the seals.
7. Clean the Caliper and Slides: Use a wire brush to clean any rust or debris from the caliper mounting points and the caliper slides. Brake cleaner is useful for removing brake dust and grease.
8. Install New Brake Pads: Install the new brake pads into the caliper. Ensure they slide in smoothly.
9. Reinstall the Caliper: Carefully reposition the caliper over the brake rotor and re-install the caliper bolts, tightening them to the manufacturer's specified torque.
10. Reinstall the Wheel and Lower the Vehicle: Reinstall the wheel and lower the vehicle.
11. Pump the Brakes: Before driving, pump the brake pedal several times to ensure the pads make contact with the rotor.
12. Test Drive: Test drive the vehicle carefully, checking for any unusual brake behavior.
Important Considerations:
* Brake Fluid: If you are having difficulty compressing the caliper piston, you may need to bleed the brake system. This is a more involved process that may require special tools.
* Rotor Condition: While you have the wheel off, inspect the brake rotor for wear and scoring. If the rotor is excessively worn or damaged, it may need to be replaced or turned (machined).
* Repair Manual: Again, consulting a repair manual specific to your 1998 Cadillac Catera is highly recommended. This guide is a generalization; details may vary.
If you are uncomfortable performing this repair yourself, take your vehicle to a qualified mechanic. Brake work is crucial for safety. Improperly installed brakes can lead to dangerous situations.
