DIY Maintenance: Lubricating RED eTap AXS D2 (12-speed) Rear Derailleur Pulleys

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The SRAM RED eTap AXS D2 12-speed rear derailleur is a high-performance component known for its smooth shifting and precise operation. However, like all drivetrain parts, it requires regular maintenance to ensure longevity and optimal performance. One of the key maintenance tasks is lubricating the derailleur pulleys. This procedure helps reduce friction, prevent wear, and maintain smooth shifting, making it essential for every rider. In this guide, we’ll walk you through the process of lubricating the pulleys on your RED eTap AXS D2 rear derailleur.

Tools Required

  • Chain lube or specialized pulley lubricant
  • Clean rag
  • Small brush (optional, for cleaning)
  • Torque wrench (for reassembling the derailleur)
  • 2.5mm Allen wrench (if needed for pulley removal)
  • Cleaning solution (isopropyl alcohol or degreaser)

Step 1: Prepare the Bike and Work Area

Before you begin lubricating the pulleys, ensure the bike is securely placed in a workstand. This allows easy access to the rear derailleur and ensures your safety during the process.

  1. Shift the bike into the smallest cog to relieve tension from the rear derailleur.
  2. Ensure the area around the derailleur is clean and dry to avoid any contaminants interfering with the lubrication process.

Step 2: Remove the Rear Derailleur (If Necessary)

In most cases, you can lubricate the pulleys without removing the derailleur. However, if the pulleys are heavily worn or need a thorough cleaning, removing the derailleur may be necessary.

  1. Use a 2.5mm Allen wrench to remove any bolts securing the derailleur to the hanger (if required).
  2. Gently remove the derailleur from the bike and place it on a clean, stable surface.

Step 3: Remove the Pulleys

The next step involves removing the pulleys from the derailleur body to access the bearings and ensure proper lubrication.

  1. Using the appropriate tool, typically a 2.5mm Allen wrench, remove the bolts securing the pulleys.
  2. Carefully remove the pulleys from the derailleur body, noting their orientation for reinstallation.

Step 4: Clean the Pulleys and Bearings

Before applying new lubricant, it’s essential to clean any old grease, dirt, or debris from the pulleys and their bearings.

  1. Use a clean rag and cleaning solution (such as isopropyl alcohol or degreaser) to wipe down the pulleys and remove old lubricant and dirt.
  2. For more thorough cleaning, use a small brush to scrub any hard-to-reach areas.
  3. Inspect the bearings for wear. If you notice any unusual resistance or roughness, the bearings may need replacement.

Step 5: Lubricate the Pulleys

With the pulleys cleaned, it’s time to apply new lubricant to reduce friction and ensure smooth operation.

  1. Apply a small amount of chain lube or specialized pulley lubricant to each of the pulleys’ bearing areas. Be cautious not to over-lubricate, as excess lubricant can attract dirt and cause additional wear.
  2. Rotate the pulleys by hand to distribute the lubricant evenly over the bearings and moving parts.
  3. Wipe off any excess lubricant from the outside surfaces to prevent buildup.

Step 6: Reassemble the Rear Derailleur

After applying the lubricant, it’s time to reassemble the rear derailleur.

  1. Reinstall the pulleys into their original position on the derailleur body.
  2. Tighten the pulley bolts securely, but avoid overtightening. Use a torque wrench if necessary to ensure proper torque settings.
  3. If you removed the derailleur earlier, reinstall it onto the bike and secure it with the necessary bolts.

Step 7: Test the Rear Derailleur

Once the pulleys are lubricated and the derailleur is reassembled, it’s time to test the shifting performance.

  1. Shift through the gears to ensure the rear derailleur is operating smoothly and quietly.
  2. Pay attention to any irregular sounds, jerky movements, or sluggish shifting, as these could indicate the need for further adjustment or additional maintenance.
  3. If everything functions as expected, your maintenance is complete.

Step 8: Regular Maintenance and Checkups

To ensure that the lubricated pulleys continue to perform well, it’s important to perform regular maintenance checks.

  1. Clean and re-lubricate the pulleys every 200-300 miles, or more often if riding in harsh conditions.
  2. Regularly inspect the condition of the pulleys and bearings for wear. If you notice any play or roughness, it may be time to replace the pulleys or their bearings.
  3. Keep your drivetrain clean by wiping down the rear derailleur and pulleys after rides, especially after wet or muddy conditions.

By following these steps, you can ensure that your SRAM RED eTap AXS D2 12-speed rear derailleur pulleys stay in excellent condition, contributing to the overall performance and longevity of your drivetrain. Regular lubrication and maintenance of these small components will help you avoid costly repairs and enjoy smooth shifting during every ride.