Summary
- A hammer and punch can be used in conjunction with other tools to help loosen the outer race, but be careful not to damage the hub.
- If you’re using a bearing race puller, position the arms of the puller around the outer race and tighten the central bolt.
- If the outer race is stubborn, you can use a hammer and punch to tap on the edge of the race.
Replacing a wheel bearing is a common automotive maintenance task that can save you money compared to professional service. However, one of the trickiest parts of the process is removing the outer race of the bearing. This guide will walk you through the steps, providing tips and tricks for a successful removal, even if you’re a novice mechanic.
Why Remove the Outer Race?
Before diving into the removal process, let’s understand why it’s necessary. The outer race of a wheel bearing is a critical component that sits within the hub assembly. When a bearing fails, often the outer race becomes damaged or seized, requiring removal for replacement.
Essential Tools for the Job
Before you start, gather the necessary tools. This will ensure a smooth and efficient removal process:
- Hydraulic Press: A hydraulic press is the most effective tool for removing the outer race. It provides the controlled force needed to safely remove the race without damaging the hub.
- Bearing Race Puller: A bearing race puller is another option, although it might require more effort and can be less effective on stubborn races.
- Hammer and Punch: A hammer and punch can be used in conjunction with other tools to help loosen the outer race, but be careful not to damage the hub.
- Socket Set: You’ll need sockets to remove the wheel hub and other components.
- Torque Wrench: A torque wrench is essential for tightening bolts to the correct specification.
- Safety Glasses and Gloves: Always wear safety glasses and gloves to protect your eyes and hands.
Preparing for the Removal
1. Secure the Vehicle: Park your vehicle on a level surface and engage the parking brake. Chock the rear wheels to prevent the vehicle from rolling.
2. Jack Up the Vehicle: Use a jack to lift the vehicle and support it securely with jack stands.
3. Remove the Wheel: Remove the lug nuts and take off the wheel.
4. Remove the Brake Caliper and Rotor: Carefully remove the brake caliper and rotor to gain access to the hub assembly.
The Removal Process
1. Locate the Outer Race: The outer race is typically located on the inside of the hub, where the bearing sits.
2. Use the Hydraulic Press: With the hub secured in the press, position the press’s ram against the outer race. Apply pressure slowly and steadily until the race starts to move. Once the race is free, remove it carefully.
3. Use a Bearing Race Puller: If you’re using a bearing race puller, position the arms of the puller around the outer race and tighten the central bolt. Apply force gradually until the race is removed.
4. Use a Hammer and Punch: If the outer race is stubborn, you can use a hammer and punch to tap on the edge of the race. However, be extremely careful not to damage the hub.
Dealing with Stubborn Races
If the outer race is particularly stubborn, you can try several techniques to loosen it:
- Heat: Apply heat to the hub using a heat gun or torch. This can help expand the metal and loosen the race. Be careful not to overheat the hub.
- Penetrating Fluid: Apply penetrating fluid (like WD-40) to the race and let it sit for a few minutes. This can help loosen any rust or corrosion.
- Impact Driver: In some cases, an impact driver can be used to loosen the race. However, use caution as this method can be damaging if not done carefully.
Installing the New Outer Race
Once the old race is removed, you can install the new one. Here’s how:
1. Clean the Hub: Thoroughly clean the hub and ensure there are no debris or burrs.
2. Lubricate the New Race: Apply a thin layer of grease to the new outer race.
3. Install the New Race: Use the hydraulic press or bearing race puller (in reverse) to press the new race into the hub. Be sure to apply pressure evenly to avoid damaging the race or hub.
Final Steps and Safety Precautions
1. Reassemble the Hub: Reinstall the rotor, brake caliper, and wheel. Ensure that all bolts are tightened to the correct specifications using a torque wrench.
2. Test Drive: Take the vehicle for a test drive and listen for any unusual noises. If you hear any grinding or rattling, stop immediately and re-inspect your work.
Wrap Up: A Job Well Done
Congratulations! You’ve successfully removed the wheel bearing outer race and replaced it with a new one. By following these steps and using the right tools, you can save money and gain a valuable skill in automotive maintenance.
Frequently Asked Questions
Q: Can I remove the outer race without a hydraulic press?
A: While it is possible to remove the outer race without a hydraulic press, it is highly recommended to use one. A press provides the controlled force necessary to avoid damaging the hub.
Q: How do I know if my wheel bearing needs replacing?
A: Common signs of a failing wheel bearing include:
- Grinding or roaring noise: This noise usually gets louder when turning or at higher speeds.
- Vibration or shaking: You may feel the vibration in the steering wheel or the entire vehicle.
- Play in the wheel: If you can move the wheel back and forth, it’s a sign of a worn-out bearing.
Q: Can I reuse the old outer race?
A: It is not recommended to reuse the old outer race. If the race is damaged or worn, it will likely fail prematurely and could damage other components.
Q: Is it safe to drive with a damaged wheel bearing?
A: Driving with a damaged wheel bearing is extremely dangerous. It can lead to loss of control, wheel separation, and potentially serious accidents. If you suspect a problem with your wheel bearing, get it inspected and repaired immediately.