When it comes to maintaining your Axon Werx [paid link] suspension fork, one of the most important tasks is changing the oil. Regular oil changes not only ensure smooth operation but also extend the lifespan of the fork. This guide will walk you through the necessary steps for performing a suspension fork oil change for the SR Suntour Axon Werx [paid link]. Whether you’re a beginner or a seasoned cyclist, this guide will give you all the information you need for a successful oil change.
Tools Required
- Suspension fork oil (recommended by SR Suntour)
- 5mm and 6mm Allen wrenches [paid link]
- Torque wrench [paid link]
- Oil drain pan or container
- Clean rags
- Suspension fork oil syringe or pump
- Needle nose pliers
- Fork seal driver tool (optional)
- Suspension grease (SR Suntour recommended)
- Flathead screwdriver
- Plastic scraper or spatula
Preparation
Before beginning the oil change, ensure that you have all the necessary tools and the correct type of oil for your Axon Werx fork. The oil change process involves draining the old oil, inspecting the components, and refilling the fork with fresh oil. Make sure to work in a clean and well-lit environment to avoid contamination of the fork’s internals.
1. Remove the Fork from the Bike
Start by removing the front wheel and detaching the fork from the bike frame. Use a 5mm Allen wrench [paid link] to loosen the axle bolts or quick-release skewer, depending on your setup. Once the wheel is removed, use a 6mm Allen wrench [paid link] to detach the fork from the headset.
2. Position the Fork for Oil Drainage
With the fork removed, position it upright in a secure holder or on a workbench. Ensure it is stable to prevent any spills during the oil draining process. Place the oil drain pan or container beneath the fork to catch the old oil.
3. Remove the Fork Cap and Air Valve
Use a 6mm Allen wrench to unscrew the fork cap. This will allow access to the internal air spring. After removing the cap, you can use the needle nose pliers to carefully remove the air valve. Place the air valve in a safe spot for later reinstallation.
4. Drain the Old Oil
Hold the fork upside down and let the oil drain completely into the container. It may take a few minutes for all of the oil to drain out, depending on the condition of the fork. You can gently tap the lower legs of the fork to ensure all the oil has been removed. After draining, wipe the inside of the fork with a clean rag to remove any excess oil.
Inspection and Maintenance
1. Check the Fork Seals and Dust Wipers
While the oil is draining, inspect the fork seals and dust wipers for any signs of wear or damage. If the seals appear cracked or torn, it is a good idea to replace them during the oil change. Fork seal replacement is crucial for maintaining the performance and longevity of the fork, as damaged seals can lead to contamination of the oil.
2. Clean the Fork Components
Use a clean rag to wipe down the fork’s stanchions and lowers. Pay special attention to any debris or dirt that may have accumulated. If necessary, use a plastic scraper or spatula to gently remove any stubborn grime. Keeping the fork clean will ensure the longevity of the fork seals and smooth operation.
3. Inspect the Internal Components
Check the internals of the fork for any signs of wear or damage. Examine the damper assembly and air spring for any oil leakage or broken components. If you notice any issues, it’s best to replace the faulty parts before continuing with the oil change.
Refilling the Fork with New Oil
1. Choose the Correct Suspension Oil
It is essential to use the correct type and weight of suspension fork oil recommended by SR Suntour for the Axon Werx model. The correct oil weight ensures proper damping performance and responsiveness. Refer to your manual for the specific oil recommendations, as using the wrong type of oil can affect the suspension’s behavior.
2. Inject Fresh Oil into the Fork
Using a suspension oil syringe or pump, begin injecting the fresh oil into the fork’s lowers through the oil fill hole. Ensure you fill the fork with the recommended volume of oil. Typically, the Axon Werx requires a specific amount of oil for both the air spring and damper chambers. Take care to avoid overfilling, as excess oil can cause fork performance issues.
3. Install the Fork Cap and Air Valve
Once the fork is filled with the proper amount of oil, reinstall the air valve and tighten it securely using a torque wrench [paid link]. Follow the manufacturer’s torque specifications to avoid damaging the valve or other components. Afterward, reinstall the fork cap and tighten it with the correct torque value as well.
Reassembly and Final Adjustments
1. Reassemble the Fork
Reassemble the fork by carefully reinstalling all the components you removed earlier, including the air valve, fork cap, and any seals or wipers you may have replaced. Make sure everything is properly tightened, but avoid overtightening, as this can cause damage to the parts.
2. Reinstall the Fork on the Bike
After the oil change is complete, it’s time to reinstall the fork on your bike. Place the fork back into the headset, ensuring it is securely fastened. Tighten the headset bolts using a 6mm Allen wrench and reattach the front wheel using the appropriate method (axle bolts or quick-release skewer). Double-check that the fork is correctly aligned and secure before riding.
3. Test the Fork
Before taking the bike out for a ride, test the fork to ensure it is functioning correctly. Compress the fork several times to check for smooth movement. If the fork feels stiff or makes unusual noises, it may require further adjustments. Adjust the air pressure in the fork’s air spring according to your weight and riding style.
Troubleshooting Common Issues
1. Fork Still Feels Stiff After Oil Change
If your fork feels stiff even after performing the oil change, it could be due to improper air pressure settings or insufficient oil in the air spring. Double-check the air pressure and ensure that the correct oil amount was used.
2. Oil Leakage from the Fork Seals
If you notice oil leakage from the fork seals after the oil change, this could indicate worn-out seals. Replace the seals and perform another oil change to prevent further leakage.
3. Fork Damping Issues
If the fork feels unresponsive or has poor damping performance, it may indicate an issue with the damper internals. It’s possible that the damper oil is contaminated or that there is a problem with the damper cartridge. In this case, disassembling and inspecting the damper internals may be necessary.
Conclusion
Changing the suspension fork oil on your SR Suntour Axon Werx is a crucial maintenance task that can significantly improve the performance and lifespan of your fork. By following the steps outlined in this guide, you can complete the oil change yourself, ensuring that your fork remains in optimal condition for the next ride. Regular oil changes and maintenance will help you enjoy a smoother and more responsive ride, whether you’re tackling trails or enjoying your favorite roads.