Tools You'll Likely Need:
* Jack and jack stands
* Wheel chocks
* Wrench(es) (sizes will vary, check your car) – likely metric
* Socket set and ratchet
* Lug wrench
* C-clamp (for compressing the caliper piston)
* Brake cleaner
* Gloves
* Container to catch brake fluid
* Possibly a slide hammer (for stubborn caliper pins)
Steps:
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: Use the lug wrench to remove the lug nuts and take off the wheel.
3. Locate and Remove the Caliper: The caliper is the metal assembly that houses the brake pads and piston. You'll likely find bolts securing it to the caliper bracket. These bolts are usually on the back of the caliper. Unscrew these bolts carefully, keeping track of their position and any washers or shims. Once loose, the caliper should swing free, but might be difficult to separate due to the brake hose.
4. Disconnect the Brake Hose: This is crucial. There are two ways to handle the brake hose:
* Method 1 (Recommended): Use a tubing clamp or a small piece of rubber hose to clamp the hose near the connection to the caliper. This prevents brake fluid from escaping. Then, carefully disconnect the hose at the caliper fitting using the appropriate wrench. Have a rag ready to soak up any fluid that might leak.
* Method 2 (Less Preferred): Carefully support the caliper and use a wrench to disconnect the hose, having a container ready to catch spilled brake fluid. This method is riskier for spillage and should be avoided if possible.
5. Remove the Brake Pads: The pads should now be easily accessible. They usually slide out from their retaining clips. Note the orientation of the pads for correct reinstallation.
6. Compress the Caliper Piston: The caliper piston needs to be compressed to make room for the new pads. Use a C-clamp to carefully compress the piston back into the caliper. Go slowly and evenly to avoid damaging the piston or seals. Be aware that brake fluid will be pushed back into the brake lines. Make sure you have the container to catch any fluid spill.
7. Inspect components: Inspect the caliper, caliper bracket, brake pads, and brake lines for any wear and tear, damage, or rust. Replace any worn or damaged components.
8. Reassembly: This is the reverse of the removal process. Install new brake pads, making sure they are correctly seated in their guides and clips. Reconnect the brake hose, making sure it's tight and secure. Attach the caliper to the caliper bracket, and torque the bolts to the manufacturer's specified torque.
9. Bleed the Brakes (Very Important): After reassembly, you *must* bleed the brakes to remove any air that might have entered the system. This usually requires two people. One person pumps the brake pedal while the other opens and closes the bleeder valve on each caliper (follow the bleeding procedure in your repair manual).
10. Reinstall the Wheel: Put the wheel back on, and tighten the lug nuts in a star pattern to avoid warping the rotor. Lower the vehicle.
Important Notes:
* Brake fluid is corrosive: Wear gloves and eye protection. Flush any spills immediately.
* Brake system is under pressure: Be careful when disconnecting brake lines.
* Consult a repair manual: This guide is a general overview. Your car's manual contains specific instructions and torque specifications. Failure to follow these could lead to brake failure.
* If unsure, seek professional help: If you are not comfortable performing this repair, take your vehicle to a qualified mechanic. Brake safety is paramount.
This information is for guidance only. Improper brake repair can lead to serious injury or death. Always prioritize safety and consult professional help when needed.
