The Campagnolo Ekar WRL rear derailleur [paid link] is an advanced component designed for precision shifting and durability. Over time, the pulleys within the derailleur can accumulate dirt, grime, and wear out due to constant movement. Regular lubrication of these pulleys ensures smooth performance and extends the life of the derailleur. In this guide, we’ll cover the necessary steps to properly lubricate the pulleys of the Ekar WRL rear derailleur, ensuring optimal performance and preventing premature wear.

Tools Required

• Torque wrench (for precise adjustments)
• 5mm and 2.5mm Allen wrenches [paid link]
• Chain lubricant (preferably dry lube for minimal buildup)
• Degreaser (to clean pulleys)
• Rag or cleaning towel
• Small brush (optional, for cleaning hard-to-reach areas)
• Gloves (for protection and cleanliness)

Preparing the Rear Derailleur

Before beginning the lubrication process, it is essential to prepare the derailleur properly.

Step 1: Remove the Rear Wheel

To access the derailleur and pulleys more easily, remove the rear wheel from the bike. This will give you unobstructed access to the derailleur and prevent any interference from the chain.

Step 2: Inspect the Derailleur

Before lubricating the pulleys, thoroughly inspect the rear derailleur. Look for any obvious signs of wear, damage, or dirt buildup. If the derailleur is excessively dirty, it is best to clean it before applying any lubricant. Use a degreaser and a rag to clean off the old lubricant and dirt.

Step 3: Remove the Derailleur from the Bike (Optional)

While it is not necessary to remove the derailleur from the bike to lubricate the pulleys, doing so may give you better access. If you decide to remove it, use a 5mm Allen wrench to detach it from the derailleur hanger.

Lubricating the Pulleys

Once the derailleur is cleaned and prepared, you can begin the lubrication process.

Step 4: Access the Pulleys

The Ekar WRL derailleur has two pulleys—the upper and lower pulleys—that guide the chain. To access them, you may need to remove the rear derailleur from its cage or simply adjust the derailleur to a position where the pulleys are more accessible.

• Use the 2.5mm Allen wrench to remove the fasteners securing the pulley cage if necessary.
• Alternatively, you can shift the derailleur to the smallest cog to create more slack in the chain, which will give you a better view of the pulleys.

Step 5: Clean the Pulleys

Before applying any lubricant, it’s important to clean the pulleys thoroughly. Use a rag or small brush to remove any dirt or debris from the pulleys. If the pulleys are very dirty, apply degreaser and scrub them gently to remove stubborn grime. Ensure that the pulleys are completely dry before moving to the next step.

Step 6: Apply Lubricant to the Pulleys

Apply a small amount of chain lubricant to the moving parts of both pulleys. Focus on the bearings and the teeth that make contact with the chain. It’s crucial not to over-lubricate, as excess lubricant can attract dirt and cause more buildup over time.

• For the best results, use a dry lubricant designed for bike chains, as it will not attract as much dust and grime compared to wet lubricants.
• Ensure that the lubricant is evenly distributed, and wipe off any excess.

Step 7: Rotate the Pulleys

After applying the lubricant, rotate the pulleys by hand to ensure the lubricant is absorbed into the bearing system and that the pulleys are moving smoothly. If you notice any resistance or stiffness, you may need to reapply lubricant or check for damage in the pulley system.

Reassembling and Testing

Step 8: Reassemble the Derailleur

Once the pulleys are lubricated and moving smoothly, reassemble the derailleur if you had removed it for better access. Tighten the fasteners to the recommended torque specification using a torque wrench. This will ensure the derailleur is securely reattached to the bike.

Step 9: Test the Shifting Performance

With the derailleur reassembled and properly lubricated, reinstall the rear wheel. Shift through the gears to ensure the derailleur is functioning correctly. Pay close attention to the performance of the pulleys during shifting. If you notice any unusual sounds or shifting issues, double-check the lubrication and pulley condition.

Troubleshooting Common Issues

1. Pulleys Sticking or Not Rotating Smoothly

If the pulleys do not rotate smoothly after lubrication, they may be clogged with old grease or dirt. In this case, it’s best to remove the pulleys and clean them thoroughly. Re-lubricate them with a minimal amount of lubricant.

2. Excessive Chain Noise

If you notice an increase in chain noise after lubricating the pulleys, it could be due to an excessive amount of lubricant. Wipe off any excess lubricant, ensuring that only a thin layer remains on the pulleys and the chain’s contact points.

3. Difficulty Shifting

If shifting performance has decreased after lubricating the pulleys, check that the derailleur hanger is properly aligned and that the chain is clean. Lubricate the chain itself, if necessary, to ensure smooth engagement with the pulleys.

Maintenance Tips for Extended Lifespan

• Regular Cleaning: Clean the pulleys every few weeks or after riding in harsh conditions (rain, mud, or dust). This prevents buildup that can affect performance.
• Lubrication Frequency: Lubricate the pulleys every 200-300 miles or more often if you frequently ride in wet conditions.
• Pully Inspection: Regularly inspect the pulleys for wear. Replace them if they show signs of damage or excessive wear to ensure smooth shifting and drivetrain efficiency.

Conclusion

Proper lubrication of the pulleys on your Campagnolo Ekar WRL rear derailleur is essential for maintaining smooth shifting and extending the component’s lifespan. By following these simple steps, you can ensure that your rear derailleur operates at its best, providing reliable performance over time. Regular maintenance will also help prevent costly repairs and replacements, keeping your bike in top condition for all your rides.