How to Replace or Service the Bearings in Your SRAM Rival eTap AXS Crankset

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The SRAM Rival eTap AXS Crankset [paid link] is a popular choice for road cyclists due to its precise and reliable performance. However, like all bike components, the crankset bearings will wear over time and require servicing or replacement to maintain optimal function. This guide provides detailed instructions on how to replace or service the bearings in your SRAM Rival eTap AXS Crankset [paid link], ensuring your bike runs smoothly and efficiently.

Tools Required

  • Crankset removal tool
  • 8mm hex wrench
  • Bearing press [paid link] or bearing puller
  • Torque wrench [paid link]
  • Clean rag or cloth
  • Bike grease or anti-seize compound
  • New bearings (compatible with the SRAM Rival eTap AXS crankset [paid link])
  • Isopropyl alcohol (for cleaning)
  • Chainring removal tool (optional)

Understanding the Bearings in the SRAM Rival eTap AXS Crankset

The SRAM Rival eTap AXS [paid link] Crankset features integrated bearings that allow the crank arms to rotate smoothly around the bottom bracket. These bearings are housed within the crankset’s spindle and the bottom bracket cups. Over time, exposure to moisture, dirt, and stress can cause the bearings to wear out, leading to issues like increased resistance, noise, or an unstable ride feel. It’s essential to regularly inspect the bearings and replace them when necessary to maintain peak performance.

Step-by-Step Instructions for Replacing or Servicing Bearings

1. Remove the Crankset from the Bike

To begin the process, you’ll need to remove the crankset from your bike to access the bearings. Follow these steps:

  • Use the crankset removal tool to take off the crank arms.
  • If your bike uses a bolt-on design, use an 8mm hex wrench to loosen the bolts securing the crankset to the spindle.
  • Once the crank arms are removed, use the crankset removal tool to slide the crankset off the spindle. Be sure to keep track of any washers or spacers that may be present.

2. Remove the Old Bearings

With the crankset removed, you now need to access and remove the bearings. Depending on your setup, this may involve removing the bottom bracket cups:

  • Use a bearing press [paid link] or bearing puller to carefully remove the old bearings from the crankset. If the bearings are stuck or particularly tight, applying a gentle amount of heat using a heat gun or hairdryer can help loosen them.
  • Be careful not to damage the crankset or bottom bracket cups while removing the bearings. You may also need to remove the bottom bracket itself if the bearings are located in that area.

3. Clean the Crankset and Spindle

Before installing the new bearings, it’s important to clean the crankset and spindle thoroughly. Use isopropyl alcohol and a clean cloth to wipe away any dirt, grease, or debris that may have accumulated around the bearings.

  • Ensure that the spindle is free of any old grease or contaminants.
  • Clean the inside of the bottom bracket cups as well to ensure that the new bearings will seat properly.

4. Install the New Bearings

Now it’s time to install the new bearings. Follow these steps:

  • Apply a thin layer of bike grease or anti-seize compound to the bearing seats in the crankset and bottom bracket cups. This will help prevent corrosion and make future bearing removal easier.
  • Carefully press the new bearings into place using a bearing press [paid link]. Ensure that the bearings are fully seated in their respective positions without any tilting or misalignment.
  • If you’re installing the bearings in the bottom bracket cups, ensure the cups are tightened according to the manufacturer’s specifications.

5. Reassemble the Crankset

Once the new bearings are installed, it’s time to reassemble the crankset:

  • Slide the crankset back onto the spindle and ensure it fits snugly.
  • Reattach the crank arms to the spindle and tighten the bolts using an 8mm hex wrench. Make sure to torque the bolts to the manufacturer’s recommended torque setting to prevent any issues with the crankset coming loose.

6. Test the Crankset

Before heading out on a ride, it’s important to test the crankset to ensure everything is functioning correctly:

  • Rotate the crankset by hand to check for smoothness. If you notice any grinding, resistance, or unusual noise, double-check the bearing installation to ensure they are properly seated.
  • Spin the crankset under load (e.g., when pedaling) to check for any signs of excessive friction or noise.
  • If everything feels smooth and stable, your bearing replacement or service is complete!

Maintenance Tips for Prolonging Bearing Life

To keep your new bearings in top condition and extend their lifespan, here are some maintenance tips:

  • Regularly clean and lubricate your crankset and bottom bracket area to prevent dirt and grime from damaging the bearings.
  • Inspect the crankset for any play or wobble, which can indicate that the bearings are starting to wear again.
  • If you ride in wet or muddy conditions, consider applying a waterproof grease to the bearings to protect them from moisture.
  • Periodically check the tightness of the crankset bolts and reapply grease to prevent the crank arms from seizing onto the spindle.

Troubleshooting Common Bearing Issues

Even with regular maintenance, you may encounter some bearing-related issues. Here are a few common problems and how to resolve them:

  • Grinding or Resistance: This often indicates that the bearings are worn out or contaminated. If cleaning and lubrication don’t resolve the issue, replacing the bearings is the best solution.
  • Crankset Play or Wobble: If you notice any lateral movement or wobble in the crankset, it could be a sign that the bearings have become loose or are improperly installed. Recheck the bearing seating and tighten the bottom bracket cups and crank arm bolts.
  • Noise or Creaking: A noisy crankset can often be attributed to worn bearings or improper installation. Ensure the bearings are seated correctly and consider replacing them if the noise persists.

By following these steps and properly maintaining the bearings in your SRAM Rival eTap AXS [paid link] Crankset, you can enjoy a smooth and efficient ride for years to come.