Tools and Materials Needed:
- Jack and jack stands
- Lug wrench
- Socket set (metric)
- Flat-blade screwdriver
- Pry bar
- Replacement wheel bearing assembly
- Grease
Safety Precautions:
- Always engage the parking brake and chock the wheels that are not being worked on.
- Use proper eye protection and gloves when handling tools.
Step-by-Step Guide:
1. Raise the Vehicle:
- Use a jack to safely lift the vehicle off the ground.
- Place jack stands under the car to support it securely.
2. Remove the Wheel:
- Use the lug wrench to loosen and remove the lug nuts.
- Remove the wheel and set it aside.
3. Remove the Brake Caliper:
- Locate the brake caliper on the wheel hub.
- Remove the bolts holding the caliper in place and set the caliper aside, taking care not to damage the brake line.
4. Remove the Brake Disc (Rotor):
- Remove the bolts holding the brake disc to the wheel hub.
- Gently pry the brake disc off if necessary.
5. Accessing the Wheel Bearing:
- Check for a protective cap on the wheel hub. Pry it off if present.
- Locate the retaining nut or bolt holding the wheel bearing assembly in place.
6. Removing the Wheel Bearing Assembly:
- Remove the retaining nut or bolt using a socket wrench.
- Use a pry bar to carefully pry the wheel bearing assembly from the hub.
- Clean the hub surface to remove any dirt or debris.
7. Prepare the Replacement Bearing:
- Apply a generous amount of grease to the new wheel bearing assembly.
- Ensure the grease covers all the moving parts.
8. Install the Replacement Bearing:
- Carefully align and insert the new wheel bearing assembly into the hub.
- Thread on the retaining nut or bolt and tighten it to the recommended torque specifications (check your vehicle's service manual).
9. Reassemble the Brake Components:
- Reattach the brake disc and secure it with the bolts.
- Reinstall the brake caliper and secure it with the bolts.
10. Reattach the Wheel:
- Place the wheel back onto the hub and tighten the lug nuts by hand.
- Lower the vehicle using the jack, but leave it slightly elevated.
- Use the lug wrench to tighten the lug nuts in a star pattern in stages until snug.
11. Lower the Vehicle:
- Carefully lower the vehicle until it's fully supported on the ground.
- Tighten the lug nuts to their final specified torque using a torque wrench.
NOTE:
- If the wheel bearing is heavily worn or damaged, you may need to replace the hub assembly as well.
- Wheel bearings are sensitive components and improper installation can affect vehicle safety. If unsure about any of the steps, consult a professional mechanic.
Additional Tips:
- Before removing any nuts or bolts, mark their original position to ensure proper reinstallation.
- Be mindful of any electrical components or wiring when working around the wheel hub.
