Tools You'll Likely Need:
* Wheel chocks: Essential for safety.
* Jack and jack stands: Never work under a car supported only by a jack.
* Lug wrench: To remove the wheel.
* Socket set and wrenches: Various sizes will be needed.
* Hammer and punch: Possibly for removing components.
* Pry bar: May be helpful for separating parts.
* Penetrating oil (PB Blaster, etc.): To loosen rusted or seized parts.
* Wheel bearing press (highly recommended): This is the ideal tool for safely pressing in and out the bearing. Improvising can damage the hub and bearing.
* New rear wheel bearing: Make sure you get the correct part number for your specific Fiesta model.
* Torque wrench: Crucial for tightening bolts to the correct specifications.
* Clean rags: To keep things clean and prevent damage.
* Safety glasses and gloves: Always protect yourself.
General Steps (Consult your repair manual for specifics):
1. Safety First: Secure the vehicle using wheel chocks and jack stands. Engage the parking brake.
2. Remove the Wheel: Loosen the lug nuts before jacking up the car. Remove the wheel.
3. Remove the Brake Caliper and Rotor: Depending on the Fiesta model, you may need to remove the caliper assembly (often requires unbolting and possibly disconnecting a brake line) and the brake rotor (may require removing a retaining bolt or clip). Support the caliper to prevent stressing the brake line.
4. Remove the Axle Nut and Hub: Remove the large axle nut securing the hub to the axle. This may require significant force and a strong breaker bar. Once the nut is off, you can usually remove the hub assembly. Some models require removing other components first.
5. Remove the Old Bearing: This is the trickiest part. A wheel bearing press is strongly recommended here. Attempting to remove it with a hammer and punch is likely to damage the hub. The press will carefully remove the old bearing without damaging the hub.
6. Install the New Bearing: Again, a wheel bearing press is essential. The new bearing must be pressed in evenly and to the correct depth.
7. Reassembly: Carefully reassemble everything in reverse order, ensuring all components are properly seated and tightened to the correct torque specifications (from your repair manual). Pay attention to the orientation of any seals or shims.
8. Torque Specifications: Use a torque wrench to tighten all bolts and nuts to the manufacturer's specifications. Incorrect torque can lead to premature wear or failure.
9. Test Drive: After reassembly, take a short test drive to check for any unusual noises or vibrations.
Important Considerations:
* ABS Sensors: If your Fiesta has Anti-lock Braking System (ABS), you might encounter an ABS sensor on the hub assembly. Be careful to not damage it during removal and reinstallation.
* Hub Seals: If the hub seal is damaged, replace it as well.
* Grease: Some wheel bearings come pre-packed with grease, others don't. Check your manual.
Disclaimer: This is a simplified overview. Incorrectly performing this repair can lead to serious injury or damage. Refer to a repair manual specific to your 2003 Ford Fiesta for precise instructions and safety precautions. If you are unsure about any step, it's best to take your car to a qualified mechanic.
