The Enduro S Hydra [paid link] wheels from Industry Nine are renowned for their durability and smooth performance, especially in aggressive riding conditions. Over time, the wheel bearings may wear out due to the stresses of riding, dirt, and water exposure. When this happens, replacing the bearings ensures your wheels continue to roll smoothly and efficiently. This guide provides a detailed, step-by-step process for replacing the bearings in your Enduro S Hydra [paid link] wheels.

Tools Required

• 10mm hex wrench
• Bearing puller or press tool
• 10mm socket and ratchet
• Small hammer
• Grease (preferably a waterproof, high-performance grease)
• Clean cloths
• Bearing replacement kit (ensure you purchase the correct size for your model)

Preparing the Enduro S Hydra Wheel for Bearing Replacement

Before you begin the bearing replacement, it’s essential to prepare your workspace and wheel properly.

1. Remove the Wheel from the Bike: Detach the wheel from your bike by releasing the axle. Ensure that the bike is securely supported, either using a work stand or a stable surface.
2. Clean the Wheel Hub: Use a clean cloth to wipe off any dirt, grime, or debris from the hub area. This will prevent contamination when you’re working on the bearings and ensure a cleaner job.
3. Remove the Axle: The Enduro S Hydra features an easily removable axle system. Use a 10mm hex wrench to unscrew and remove the axle, which will give you access to the wheel’s internals, including the bearings.

Removing the Old Bearings

The Enduro S Hydra wheels use sealed cartridge bearings. These bearings are often housed within the hub and held in place by retaining clips or press-fit components. Removing and replacing them requires precision to avoid damaging the hub or axle.

1. Inspect the Hub: Before removing the bearings, inspect the hub to identify the location of the bearing seals. The hub should have two or more bearings depending on your wheel’s setup, typically one near the freehub and one near the non-driveside of the wheel.
2. Use the Bearing Puller: Position the bearing puller tool around the bearing’s edge. Slowly apply pressure to extract the bearing from the hub. If you don’t have a bearing puller, a small hammer can be used with a punch tool to carefully tap the bearing out. Be sure to apply force in a straight line to avoid damaging the bearing seat.
3. Remove Both Bearings: If necessary, repeat this process for the second bearing. It is important to remove both bearings at the same time to ensure proper alignment when installing the new ones.

Cleaning and Inspecting the Hub

Once the old bearings are removed, clean the bearing cavities inside the hub thoroughly. Any debris left behind can interfere with the performance of the new bearings.

1. Clean the Bearing Cavity: Use a clean cloth or a brush to remove any remaining grease or grime from the bearing cavity. This ensures that the new bearings sit properly and that contaminants don’t compromise their longevity.
2. Inspect the Hub for Damage: Check for any damage inside the hub shell or bearing seat areas. If the seat is damaged, it may be necessary to replace the hub or have it professionally repaired, as a damaged bearing seat can affect the wheel’s overall performance.

Installing the New Bearings

Now that the old bearings have been removed and the hub is clean, it’s time to install the new bearings. It’s crucial to choose the correct size bearings for your model, which should be specified in the wheel’s technical documentation or available from Industry Nine directly.

1. Apply Grease to the New Bearings: Before installing the new bearings, apply a light coating of high-quality, waterproof grease. This helps prevent water ingress and ensures smoother rotation.
2. Press the Bearings into the Hub: Carefully align the new bearings with the bearing seats inside the hub. Use a bearing press [paid link] tool or the 10mm socket with a ratchet to evenly press the bearings into place. Be sure to apply uniform pressure to avoid tilting or damaging the bearings.
3. Check for Proper Fit: Once installed, check that the bearings sit flush and are properly secured within the hub. Rotate the bearings manually to ensure they spin freely without any resistance.

Reassembling the Wheel

With the new bearings in place, it’s time to reassemble the wheel.

1. Reinstall the Axle: Place the axle back into the hub, ensuring it slides through the new bearings smoothly. Tighten the axle with the 10mm hex wrench until it’s securely fastened.
2. Recheck Bearing Performance: Rotate the wheel by hand to ensure the bearings spin freely without any noticeable resistance or noise. Any roughness in rotation may indicate that the bearings were not installed correctly or are damaged.
3. Reinstall the Wheel on the Bike: Once everything is reassembled, reinstall the wheel on your bike and tighten the quick release or thru-axle. Ensure the wheel is properly centered and aligned.

Testing the Wheel

After you’ve completed the bearing replacement, perform a thorough test ride to ensure everything is functioning correctly.

1. Spin the Wheel: Before riding, give the wheel a few spins to check for smoothness. The wheel should rotate freely without any roughness or grinding sounds.
2. Check for Freehub Engagement: If your wheel has a freehub, check the engagement by spinning the pedals and listening for the distinct sound of the freehub clicking. Ensure that it’s engaging properly and smoothly.
3. Inspect for Any Issues: During the test ride, listen for any unusual noises, which could indicate that the bearings are not properly seated or that another issue has arisen during the installation process.

Troubleshooting Common Set-up Issues

Even with careful installation, you might encounter some issues after replacing the bearings. Here are a few common problems and how to address them:

1. Wheel Not Spinning Smoothly: If the wheel doesn’t spin smoothly after installation, double-check that the bearings were installed correctly and that they are the correct size. Also, ensure that the axle is properly torqued and that no dirt or debris has been left behind.
2. Grinding Noises: A grinding noise may indicate that the bearings are damaged or improperly installed. Check for proper lubrication and make sure the bearings are seated evenly within the hub.
3. Axle Misalignment: If the axle is misaligned during installation, it can cause the bearings to wear unevenly. Ensure the axle is inserted correctly and torqued to the manufacturer’s recommended settings.

Conclusion

Replacing the bearings in your Enduro S Hydra wheels can be a straightforward process with the right tools and attention to detail. Regular maintenance of the bearings will help extend the lifespan of your wheels and maintain optimal performance. By following this guide, you’ll ensure that your wheels continue to deliver the smooth, reliable ride you expect from Industry Nine products.