Here's a general procedure. Specifics might vary slightly depending on the exact brake configuration, so consult a repair manual specific to your vehicle year and model for precise details and torque specifications.
Tools you'll likely need:
* Jack and jack stands
* Lug wrench
* Wheel chocks
* Socket wrench and sockets (various sizes)
* Torque wrench
* C-clamp or caliper compression tool
* Hammer (possibly)
* Penetrating oil (like PB Blaster)
* Wire brush (possibly)
* Clean rags
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Raise the rear of the Expedition securely using a jack and place it on jack stands.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Expose the Caliper and Rotor: You should now see the brake caliper and rotor.
4. Compress the Caliper Piston: This is crucial. The caliper piston needs to be pushed back into the caliper housing to allow the rotor to be removed. Use a C-clamp or a specialized caliper compression tool to carefully compress the piston. Be mindful not to damage the piston seal or boot. You may need to open the bleeder valve (a small screw on the caliper) slightly to allow fluid to escape as you compress the piston. This prevents air from being drawn into the brake lines.
5. Remove the Caliper: Once the piston is compressed enough, you may be able to simply slide the caliper off the rotor. Sometimes the caliper mounting bolts need to be loosened (and possibly removed) to allow it to clear the rotor. Be sure to support the caliper with a wire or bungee cord to avoid it hanging by the brake line.
6. Remove the Rotor: The rotor should now be free to slide off the wheel studs. If it's stuck, you may need to gently tap it with a hammer (use a block of wood to protect the rotor's surface). Apply penetrating oil if necessary. If the rotor is severely rusted, you may need additional tools or methods to remove it.
7. Clean and Inspect: Clean the rotor mounting surface on the wheel hub, removing any rust or debris with a wire brush. Inspect the rotor for excessive wear, cracks, or scoring. If it's damaged, replace it.
8. Reassembly: Reinstall the rotor, caliper, and wheel in reverse order. Ensure the caliper is properly seated and the mounting bolts are torqued to the manufacturer's specifications. Bleed the brakes after reinstalling the caliper to remove any air introduced during the process. This is important for proper braking function.
9. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
10. Torque Specs: Consult your repair manual for proper torque specifications for the lug nuts and caliper mounting bolts. Over-tightening or under-tightening can cause problems.
Important Notes:
* Brake fluid is corrosive and toxic. Use appropriate safety measures when handling it.
* If you're not comfortable performing this repair yourself, take your vehicle to a qualified mechanic. Improper brake repair can be extremely dangerous.
* Always refer to a repair manual specific to your 2000 Ford Expedition 4x4 for detailed instructions and torque specifications. This procedure is a general guide, and variations exist between models and years.
This process is relatively straightforward for most people with basic mechanical skills, but if you're unsure about any step, it's best to seek professional help. Brake system repairs are crucial for safety.
