At a Glance
- Position a jack under the designated lift point near the wheel and raise the vehicle until there is approximately 6 inches of clearance between the ground and the tire.
- Thread the hub nut onto the spindle and tighten it to the specified torque using a torque wrench.
- In some cases, it may be possible to replace only the bearing, but it’s generally recommended to replace the entire hub assembly as it provides a more comprehensive solution.
A faulty wheel bearing hub assembly can lead to a bumpy and noisy ride, compromised handling, and even safety hazards. Replacing it is a crucial maintenance task that requires some mechanical know-how and the right tools. This comprehensive guide will provide you with step-by-step instructions on how to replace a wheel bearing hub assembly, empowering you to tackle this task with confidence.
Tools and Materials Required
- Jack and jack stands
- Lug wrench
- Socket wrench set
- Torque wrench
- Hammer or mallet
- Pry bar
- New wheel bearing hub assembly
- Anti-seize lubricant
- Brake cleaner
- Safety glasses
- Gloves
Safety Precautions
Before you begin, ensure your vehicle is parked on a level surface and the parking brake is engaged. Place chocks behind the wheels opposite the one you’re working on. Wear safety glasses and gloves throughout the process.
Step 1: Loosen Lug Nuts
Using a lug wrench, loosen the lug nuts on the wheel with the faulty bearing, but do not remove them completely.
Step 2: Jack Up Vehicle
Position a jack under the designated lift point near the wheel and raise the vehicle until there is approximately 6 inches of clearance between the ground and the tire. Secure the vehicle with jack stands.
Step 3: Remove Wheel
Completely remove the lug nuts and take off the wheel.
Step 4: Disconnect Brake Caliper
Locate the brake caliper and remove the bolts holding it in place. Disconnect the brake caliper from the rotor and secure it out of the way using a bungee cord or wire.
Step 5: Remove Brake Rotor
Use a hammer or mallet to tap the brake rotor gently until it comes loose. If it’s stuck, you can spray some brake cleaner around the hub to help free it.
Step 6: Remove Hub Nut
Locate the hub nut in the center of the wheel bearing hub assembly. Use a socket wrench to remove it, but be aware that it may be very tight.
Step 7: Extract Hub Assembly
Using a pry bar, carefully pry the hub assembly out of the knuckle. It may require some force, so be patient.
Step 8: Clean Mounting Surface
Clean the mounting surface on the knuckle where the new hub assembly will be installed. Remove any rust or debris using a wire brush or brake cleaner.
Step 9: Apply Anti-Seize
Apply a thin layer of anti-seize lubricant to the mounting surface of the new hub assembly. This will prevent the hub from seizing in the future.
Step 10: Install New Hub Assembly
Insert the new hub assembly into the knuckle and carefully tap it in using a hammer or mallet. Ensure it is fully seated.
Step 11: Install Hub Nut
Thread the hub nut onto the spindle and tighten it to the specified torque using a torque wrench. Refer to your vehicle’s service manual for the correct torque value.
Step 12: Install Brake Rotor
Place the brake rotor back onto the hub and tighten the bolts to the specified torque.
Step 13: Reconnect Brake Caliper
Reattach the brake caliper to the rotor and tighten the bolts to the specified torque.
Step 14: Install Wheel
Put the wheel back on and tighten the lug nuts by hand.
Step 15: Lower Vehicle
Lower the vehicle by removing the jack stands.
Step 16: Torque Lug Nuts
Using a torque wrench, tighten the lug nuts to the specified torque, following a star pattern to ensure even tightening.
Final Inspection
Double-check all the bolts and nuts to ensure they are tightened to the correct torque. Inspect the brake system to ensure everything is properly connected and functioning.
Top Questions Asked
Q: How often should I replace my wheel bearing hub assembly?
A: The frequency of replacement varies depending on driving conditions and vehicle usage. Generally, it’s recommended to replace them every 60,000 to 100,000 miles.
Q: Can I replace the wheel bearing only without replacing the hub assembly?
A: In some cases, it may be possible to replace only the bearing, but it’s generally recommended to replace the entire hub assembly as it provides a more comprehensive solution.
Q: What are the signs of a faulty wheel bearing hub assembly?
A: Symptoms include grinding noises, vibration, uneven tire wear, and difficulty turning.