Tools You'll Need:
* Jack and jack stands: Safely support the vehicle. Never work under a vehicle supported only by a jack.
* Wheel chocks: For added safety.
* Lug wrench: To remove the wheel.
* Wheel removal tool (if necessary): Some wheels may require this.
* Caliper piston compression tool: To retract the caliper piston.
* Sockets and wrenches: The sizes will vary depending on your vehicle's year. You'll likely need sockets for the caliper bolts, and possibly the rotor retaining screw (if applicable).
* Hammer (rubber mallet preferred): To help remove the rotor.
* Penetrating oil (like PB Blaster): To loosen any stubborn bolts.
* Gloves and safety glasses: For protection.
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks on the wheels that remain on the ground. Raise the vehicle using a jack and securely support it with jack stands.
2. Remove the Wheel: Remove the lug nuts and carefully remove the wheel.
3. Remove the Caliper:
* Option 1 (Floating Caliper): Most likely scenario. Use a socket wrench to remove the caliper mounting bolts. Carefully hang the caliper using a wire or bungee cord to keep it out of the way without straining the brake line. Do not let the caliper hang by the brake line.
* Option 2 (Fixed Caliper): Less common, but possible. Consult your repair manual for the specific procedure. Often involves removing the entire caliper assembly.
4. Compress the Caliper Piston: Use the caliper piston compression tool to push the piston back into the caliper. This creates space for the rotor to clear. This step is crucial; otherwise, you may damage the caliper or rotor.
5. Remove the Rotor: There are typically two ways the rotor attaches:
* Rotor Retaining Screw: Some rotors have a single screw on the back. Unscrew this to release the rotor.
* Friction Fit: Most rotors are friction fit onto the hub. If there's no screw, gently tap the rotor with a hammer (rubber mallet is preferable) to break the friction fit and carefully remove it. Sometimes, you might need to use a puller if the rotor is stuck. Work around the rotor applying even pressure.
6. Clean the Hub: Clean the wheel hub where the rotor sits to remove any rust or debris.
7. Installation (Reverse Procedure): Install the new rotor, ensuring it's properly seated. Reassemble the caliper and re-attach the wheel, tightening the lug nuts to the manufacturer's specified torque. Bleed the brakes after replacing a rotor.
Important Considerations:
* Brake Fluid: Be mindful of brake fluid. It's corrosive. If it spills, clean it up immediately.
* Torque Specifications: Always tighten bolts and lug nuts to the manufacturer's specified torque. Over-tightening can damage components, while under-tightening can lead to loosening and failure.
* Brake Bleeding: After working on the brake system, it's essential to bleed the brakes to remove any air that may have entered the system.
This detailed explanation will guide you; however, I highly recommend consulting your vehicle's repair manual for precise steps, torque specifications, and diagrams. If you're not comfortable performing this repair yourself, take your vehicle to a qualified mechanic. Brake work is critical to vehicle safety.
