Discover the Secret to a Smooth Ride: How to Change Rear Wheel Bearing Subaru Legacy

Are you hearing a grinding or rumbling noise coming from your Subaru Legacy‘s rear wheels? This could be a sign of a worn-out rear wheel bearing, a crucial component that ensures smooth and safe driving. Replacing a rear wheel bearing can seem daunting, but with the right tools and knowledge, it’s a DIY project within reach. This comprehensive guide will walk you through the process of how to change rear wheel bearing Subaru Legacy, equipping you with the confidence to tackle this maintenance task yourself.

Understanding the Importance of Rear Wheel Bearings

Rear wheel bearings are essential components that support the weight of your vehicle and allow the wheels to rotate smoothly. They consist of a set of balls or rollers that sit within a raceway, allowing for low-friction movement. Over time, these bearings can wear down due to friction, dirt, and water intrusion, leading to a variety of symptoms.

Recognizing the Signs of a Worn Rear Wheel Bearing

If you notice any of the following signs, it’s time to inspect your rear wheel bearings:

• Grinding or rumbling noise: This is the most common symptom of a worn bearing. The noise will often increase in volume as the bearing deteriorates.
• Wobbly wheel: A worn bearing can cause the wheel to wobble or shake, particularly at higher speeds.
• Vibration in the steering wheel: If the vibration is felt primarily in the steering wheel, it could indicate a problem with the rear wheel bearing.
• Uneven tire wear: A worn bearing can cause uneven tire wear, as the wheel may not be rotating properly.

Gathering the Necessary Tools and Materials

Before you begin, make sure you have the following tools and materials:

• Jack and jack stands: For safely lifting the vehicle.
• Lug wrench: To remove the lug nuts.
• Torque wrench: To tighten lug nuts to the correct specifications.
• Hammer: For removing the bearing race.
• Bearing race and seal removal tool: For safely removing the old bearing and seal.
• Bearing race and seal installation tool: For properly installing the new bearing and seal.
• New rear wheel bearing: Ensure you purchase the correct bearing for your Subaru Legacy model year.
• Grease: For lubricating the new bearing.
• Cleaning supplies: To clean the hub and bearing housing.
• Safety glasses: To protect your eyes.
• Gloves: To protect your hands.

Step-by-Step Guide to Replacing the Rear Wheel Bearing

Now that you have all the necessary tools and materials, follow these steps to replace the rear wheel bearing:

1. Park the vehicle on a level surface and engage the parking brake.
2. Loosen the lug nuts on the wheel that needs the bearing replacement.
3. Use the jack to lift the vehicle until the wheel is off the ground.
4. Place jack stands under the vehicle for safety.
5. Remove the lug nuts and the wheel.
6. Remove the brake caliper and rotor. You may need to use a brake caliper piston tool to compress the caliper piston.
7. Remove the cotter pin and castle nut that hold the hub in place.
8. Use the bearing race and seal removal tool to remove the old bearing race and seal.
9. Clean the hub and bearing housing thoroughly with cleaning supplies.
10. Apply grease to the new bearing and install it into the hub using the bearing race and seal installation tool.
11. Install the new seal into the hub.
12. Reinstall the hub, castle nut, and cotter pin. Tighten the castle nut to the manufacturer’s specifications.
13. Reinstall the rotor and brake caliper.
14. Lower the vehicle using the jack.
15. Tighten the lug nuts to the correct torque specification.
16. Test drive the vehicle to ensure the repair was successful.

Troubleshooting Common Issues

While replacing a rear wheel bearing can be relatively straightforward, you may encounter some common issues:

• Difficulty removing the bearing race: If the bearing race is stuck, you may need to use a hammer and a drift punch to tap it out. Be careful not to damage the hub.
• Damaged hub: If the hub is damaged, it will need to be replaced.
• Incorrect bearing selection: Ensure you purchase the correct bearing for your Subaru Legacy model year.

Tips for Success

Here are some tips to make the process smoother:

• Use a torque wrench: This will ensure that the lug nuts are tightened to the correct specifications, preventing damage to the wheel and hub.
• Clean the hub and bearing housing thoroughly: This will help prevent dirt and debris from contaminating the new bearing.
• Use a good quality bearing: A cheap bearing may not last as long as a higher quality bearing.

Moving Beyond the Repair: Essential Maintenance Practices

Replacing the rear wheel bearing is a significant maintenance task. To prolong the lifespan of your Subaru Legacy’s components and ensure a smooth driving experience, consider these essential maintenance practices:

• Regularly inspect your vehicle: Check for any signs of wear or damage, including worn tires, brake pads, and suspension components.
• Maintain proper tire pressure: Underinflated or overinflated tires can put unnecessary stress on your suspension and wheel bearings.
• Avoid driving on rough roads: Rough roads can accelerate wear and tear on your wheel bearings.
• Schedule regular maintenance: Follow your Subaru Legacy’s recommended maintenance schedule to ensure all components are in good working order.

The End of the Road: A Final Reflection

By equipping yourself with the right tools, knowledge, and a bit of patience, you can successfully replace the rear wheel bearing on your Subaru Legacy. This repair not only restores your vehicle’s smooth operation but also provides a sense of accomplishment and cost savings. Remember, preventative maintenance is key to keeping your Subaru Legacy running smoothly for years to come.

Frequently Asked Questions

Q1: How often should I replace my rear wheel bearings?

A1: The lifespan of a rear wheel bearing can vary depending on driving conditions and maintenance practices. However, it’s generally recommended to inspect them every 50,000 miles or as needed.

Q2: Can I drive with a worn rear wheel bearing?

A2: While you may be able to drive with a worn bearing for a short time, it’s not recommended. Driving with a worn bearing can lead to further damage to the hub and other suspension components.

Q3: What happens if I don’t replace a worn rear wheel bearing?

A3: If you don’t replace a worn rear wheel bearing, it can eventually fail completely, causing the wheel to seize and potentially leading to a loss of control of the vehicle.

Q4: Can I replace just one rear wheel bearing?

A4: While it’s possible to replace just one rear wheel bearing, it’s generally recommended to replace both bearings at the same time. This ensures that both bearings are in good condition and helps to prevent future problems.