Performing regular maintenance on your rear shock is crucial for maintaining optimal performance and prolonging the lifespan of your RockShox Super Deluxe Coil Select [paid link]. Over time, shock oil breaks down and becomes contaminated, which can lead to reduced damping performance and a decrease in comfort and control. This step-by-step guide will walk you through the process of changing the oil on your Super Deluxe Coil Select [paid link], ensuring your shock continues to perform at its best.
Tools Required
Before starting the oil change, gather the following tools:
- 5mm Allen wrench [paid link]
- 8mm Allen wrench [paid link]
- Torque wrench [paid link]
- Shock pump
- Clean rags or towels
- RockShox-specific suspension fluid (5wt or recommended by manufacturer)
- 10mm spanner wrench
- Needle nose pliers
- Small container or tray for oil drainage
- Latex gloves (optional but recommended for cleanliness)
- 32mm socket or spanner wrench (for coil spring removal)
- Oil syringe or funnel
- Plastic brushes for cleaning
Preparing the Shock
1. Remove the Shock from the Bike
To begin, remove the rear shock from the bike. This typically involves unscrewing the bolts at both the upper and lower shock mounting points. Use the appropriate-sized Allen wrenches [paid link] to carefully detach the shock, making sure to support the shock as you remove it to avoid any damage.
2. Remove the Coil Spring
Next, you will need to remove the coil spring. Use a 32mm socket or spanner wrench to unscrew the preload collar. After this, slide the coil off the shock body carefully, ensuring the spring is free from any debris or dirt.
3. Clean the Shock
Before performing any disassembly, clean the shock with a clean rag to remove any dirt or grime. This is essential to prevent contaminants from entering the internal components during the oil change.
Draining the Old Oil
4. Remove the Air Can and Damper Assembly
Using a 5mm Allen wrench, unscrew the bolts securing the air can to the damper assembly. Once the bolts are removed, carefully separate the air can from the shock body. Hold the shock over a container or tray to catch any old oil that drains out. Tilt the shock to allow the oil to fully drain from both the air and damper chambers.
5. Inspect the Damper Piston
Once the oil has drained, inspect the damper piston for any signs of wear or damage. If there is significant debris or damage, it may be necessary to replace the piston or other internal components.
Cleaning and Reassembly
6. Clean the Internal Components
Using clean suspension fluid or a plastic brush, gently clean the internal components of the shock. Pay special attention to the piston rod, seals, and bushings to ensure that all contaminants are removed. Do not use any harsh chemicals that could damage the shock’s seals or internal parts.
7. Apply Fresh Oil
Once everything is clean, fill the damper assembly with fresh oil. RockShox recommends using 5wt suspension fluid, though you should always refer to the specific guidelines for your model. Use an oil syringe or funnel to carefully pour the oil into the damper chamber. Fill the chamber up to the recommended oil height specified in the RockShox service manual.
8. Reassemble the Shock
After filling the damper with fresh oil, carefully reassemble the shock by first attaching the air can to the damper. Tighten the bolts securely but be careful not to over-tighten, as this can damage the seals. Use a torque wrench [paid link] to ensure that the fasteners are tightened to the manufacturer’s recommended torque values.
Reinstalling the Coil Spring and Mounting the Shock
9. Reinstall the Coil Spring
Once the shock is reassembled, carefully slide the coil spring back onto the shock body. Tighten the preload collar using the 32mm socket or spanner wrench. Ensure the spring is properly seated and the preload collar is securely tightened.
10. Reinstall the Shock onto the Bike
Now that the shock is fully reassembled, it is time to reinstall it on the bike. Align the shock with the mounting points and carefully tighten the bolts at both the top and bottom of the shock using the appropriate-sized Allen wrenches [paid link]. Make sure the shock is properly positioned, and torque the bolts to the recommended specifications.
Final Adjustments and Testing
11. Set the Correct Sag and Adjust Pressure
Once the shock is mounted, use a shock pump to adjust the air pressure in the shock to the desired level. This is critical to achieve the correct sag for your rider weight. RockShox recommends a sag of around 30% of the shock’s travel, but this can vary depending on your riding style and preferences.
12. Test the Shock
After completing the oil change and pressure adjustments, it’s important to test the shock before hitting the trail. Push down on the rear end of the bike to compress the shock and check for smooth operation. Listen for any unusual sounds, such as squeaks or grinding, which may indicate that further servicing is required.
13. Check for Leaks
Inspect the shock for any signs of oil leakage. If you notice any leaks around the seals or air can, you may need to replace the seals and repeat the oil change process.
Troubleshooting Common Issues
14. Air Pressure Loss
If you experience air pressure loss, the shock may have a damaged seal or valve. Inspect the seals and replace them if necessary. Ensure the valve is tight and properly installed.
15. Excessive Bounce or Harsh Ride
If the shock feels too bouncy or too harsh after the oil change, the oil height may not be correct, or the oil may have been contaminated. Double-check the oil level and ensure it matches the recommended specifications. Additionally, verify that the coil spring preload is set correctly for your rider weight.
16. Unresponsive Damping
If the shock feels unresponsive, it may be a sign that the damper has air in it or the oil is not filling the system properly. Perform another bleed of the damper and ensure the oil is filling the chamber to the correct height.
Conclusion
Changing the oil in your RockShox Super Deluxe Coil Select is a vital maintenance task that helps to maintain smooth and responsive shock performance. By following this step-by-step guide, you can ensure that your rear shock remains in top condition, providing a comfortable and controlled ride. Regular oil changes, along with proper cleaning and inspection, will maximize the lifespan of your shock and keep your bike riding like new.