Here's a general outline. Specific details may vary slightly depending on whether you have 4x2 or 4x4, and the exact brake system configuration. Always consult your vehicle's repair manual for the most accurate information and diagrams.
Tools You'll Need:
* Jack and jack stands: Crucial for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: To secure the vehicle.
* Lug wrench: To remove the wheels.
* Socket wrench set: Various sizes, including metric and possibly SAE.
* Torque wrench: Essential for properly tightening bolts to prevent damage.
* C-clamp or brake caliper compressor tool: To compress the caliper piston.
* Hammer (rubber mallet preferred): To help seat components.
* Wrench or socket for caliper mounting bolts:
* Brake cleaner: To clean the mating surfaces.
* New brake rotors: Make sure you get the correct ones for your vehicle.
* Penetrating oil (like PB Blaster): May help loosen rusted bolts.
* Gloves and safety glasses: Protect yourself.
Procedure (per wheel):
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks on the wheels opposite the one you're working on.
2. Raise and Secure: Jack up the vehicle and securely place it on jack stands.
3. Remove the Wheel: Unscrew and remove the lug nuts. Remove the wheel.
4. Remove the Caliper: Locate the caliper mounting bolts. Use the appropriate wrench to remove them. In some cases, you may need to slightly compress the brake caliper piston to give enough slack to remove the caliper. You can use a C-clamp or a purpose-built caliper compressor tool for this. *Carefully support the caliper, don't let it hang by the brake line.* You might want to tie it up out of the way using some wire.
5. Remove the Brake Pads (if necessary): Depending on the condition of your pads, you might want to replace them while you're at it. If so, remove the brake pads from the caliper.
6. Remove the Rotor: Some rotors are held on by a single large central bolt and a hat, while others might just slide off. Your repair manual will show this for your Expedition. If it's a slide-off rotor, it will likely come off easily. If there is a center bolt, remove it. Sometimes there is corrosion, requiring penetrating oil and a bit of persuasion. Gently tap around the edges to loosen if needed.
7. Clean the Hub: Thoroughly clean the wheel hub and the mating surface of the rotor using brake cleaner. Ensure it's free of rust, dirt, and debris.
8. Install the New Rotor: Slide the new rotor onto the wheel studs. Ensure it seats properly.
9. Reinstall the Caliper: If you removed the pads, put them back in. Put the caliper back in place and reinstall the caliper mounting bolts. Torque them to the manufacturer's specifications (found in your repair manual).
10. Reinstall the Wheel: Put the wheel back on and tighten the lug nuts.
11. Lower the Vehicle: Carefully lower the vehicle to the ground. Tighten the lug nuts firmly.
12. Final Tightening: After lowering the vehicle, use the torque wrench to tighten the lug nuts to the manufacturer's specifications.
13. Repeat for Other Wheels: Repeat the process for the other wheels as needed.
14. Pump the Brakes: Once you've completed the job, pump the brakes several times to restore normal brake function.
Important Considerations:
* Consult your repair manual: This guide provides a general overview. Your specific vehicle may have slight variations.
* Safety: Working on brakes is serious business. If you're not comfortable, get a professional to do it.
* Torque specifications: Use a torque wrench and follow the manufacturer's specifications to prevent damage to your components. Incorrect torque can lead to brake failure.
* Brake fluid: If you're replacing brake pads, you may need to bleed the brakes afterwards to remove any air that may have entered the system.
This detailed description should help, but again, refer to your vehicle's repair manual for the most accurate and safest procedure. Don't hesitate to seek professional help if needed.
