The RXF36 m.2 [paid link] suspension fork by Öhlins is designed for high-performance riders looking for durability, smoothness, and precision in their suspension system. This step-by-step guide will walk you through the essential process of rebuilding the RXF36 m.2 [paid link] fork, covering everything from disassembly to reassembly, along with important maintenance tips. Whether you’re a seasoned mechanic or a DIY enthusiast, this guide ensures you can restore your fork to peak [paid link] performance.
Tools Required
- 5mm, 6mm, and 8mm hex wrenches
- 24mm, 27mm, and 32mm socket wrenches
- Torque wrench [paid link] (up to 30 Nm)
- Plastic mallet
- Oil drain pan
- Cleaning cloths
- Fork oil (Öhlins recommended for the RXF36 m.2)
- 15mm or 20mm through-axle
- Suspension fluid syringe
- O-ring pick tool
- C-clip tool (if applicable)
- New seals and bushings (if needed)
Disassembling the RXF36 m.2 Fork
1. Prepare the Work Area
Ensure you have a clean and organized workspace. Lay down a large towel or mat to catch any oil and prevent scratching the fork components. This step also helps in managing small parts that can easily be misplaced.
2. Remove the Fork from the Bike
Start by detaching the front wheel and removing the fork from the frame. Use the appropriate axle tool (15mm or 20mm through-axle) to loosen and remove the axle. Place the fork in a secure position, either in a bike stand [paid link] or a soft surface, to prevent damage during the rebuild process.
3. Disassemble the Top Cap
Loosen and remove the top cap using a 6mm hex wrench. This step will allow you to access the air spring and damper components. Carefully set the top cap aside.
4. Remove the Air Spring
Once the top cap is off, pull the air spring assembly out of the fork leg. Be sure to observe the position of any spacers or o-rings so you can reinstall them correctly during reassembly.
5. Drain the Oil
Place the fork upside down over an oil drain pan to allow the oil to drain completely. Let the fork sit for a few minutes to ensure all suspension fluid is removed from the damper and the fork legs.
6. Remove the Damper Assembly
Using the appropriate hex wrenches, remove the bolts securing the damper to the lower legs. Carefully slide the damper assembly out of the fork. Be cautious, as the damper may still contain some oil.
7. Disassemble the Lower Legs
With the damper removed, proceed to detach the lower legs by loosening the bolts at the bottom of the fork. Once loose, gently tap the lower legs with a plastic mallet to dislodge them from the stanchions.
8. Inspect for Wear or Damage
Before continuing, inspect all components for any signs of wear or damage. Pay close attention to the bushings, seals, and stanchions for scratches or deep wear marks. Replace any parts as necessary to maintain the fork’s performance.
Rebuilding the RXF36 m.2 Fork
1. Clean All Components
Thoroughly clean the stanchions, lowers, damper, and air spring assembly using a cloth and suspension-specific cleaner. Removing any residual oil and debris is crucial to prevent contamination during reassembly.
2. Replace Seals and Bushings
If you are replacing the seals and bushings, carefully remove the old ones using an O-ring pick tool. Install the new seals and bushings in the same orientation as the original ones, ensuring they are seated properly to prevent oil leakage.
3. Lubricate the Fork Components
Apply a light coating of suspension grease to the bushings and stanchions. This lubrication will help prevent stiction and keep the fork functioning smoothly. Be cautious not to over-apply grease, as excess grease can attract dirt.
4. Install the Damper Assembly
Slide the damper assembly back into the fork lowers. Ensure it is aligned properly and securely fasten it with the bolts you removed earlier. Use a torque wrench [paid link] to tighten the bolts to the recommended torque specification to avoid damaging the fork components.
5. Reinstall the Air Spring
Reinsert the air spring assembly into the fork leg. If you removed any spacers or o-rings earlier, reinstall them in the same order. Reattach the top cap, ensuring it is tightened to the manufacturer’s torque specification.
6. Refill with Oil
Using a syringe, refill the fork with the correct type and amount of suspension oil as recommended by Öhlins. This step is critical for the performance of the fork, so ensure you use the recommended oil and follow the correct oil volume.
7. Test the Fork Movement
Before fully reassembling the fork, test the movement by compressing the fork stanchions. Ensure the fork moves smoothly and the damper functions properly. If the fork is too stiff or too soft, adjust the air pressure or oil volume as needed to achieve your desired feel.
8. Reassemble the Fork
Reattach the lower legs by sliding them back onto the stanchions. Gently tap them into place with a plastic mallet to ensure a proper fit. Secure the bolts at the bottom of the fork.
9. Torque All Bolts to Spec
Using a torque wrench, tighten all the bolts on the fork, including the bolts securing the top cap, damper, and lower legs. Ensure each bolt is tightened to the manufacturer’s specified torque setting to prevent damage and ensure proper performance.
Reinstalling the Fork
1. Mount the Fork Back on the Bike
Once the rebuild is complete, reinstall the fork onto the bike frame. Insert the axle into the fork dropouts and tighten it securely. Reattach the front wheel, ensuring the wheel is properly aligned and the axle is tightened to the correct torque.
2. Check Fork Alignment
Double-check the fork’s alignment by ensuring it is straight with the frame. A misaligned fork can cause handling issues or damage the fork over time.
3. Test Ride the Bike
Take the bike for a test ride to check the performance of the suspension. Pay attention to the fork’s responsiveness, the smoothness of the compression and rebound, and the overall feel of the ride. If any issues arise, consider making further adjustments to air pressure, oil volume, or damping settings.
Troubleshooting Common Set-up Issues
1. Fork Not Returning Smoothly
If the fork isn’t returning smoothly, this could be due to insufficient lubrication or air pressure issues. Check for proper oil levels and ensure the air spring is set to the correct pressure.
2. Stiff or Harsh Ride
A stiff or harsh ride can be the result of too much air pressure, incorrect oil volume, or a damaged damper. Reduce the air pressure, check the oil levels, and ensure the damper is functioning correctly.
3. Oil Leaks
Oil leaks from the fork may be caused by damaged seals or bushings. Inspect the seals and replace them if necessary. Ensure the seals are properly seated to prevent leakage.
Customization and Optimization
To optimize the RXF36 m.2 for your riding style, consider adjusting the air pressure, compression, and rebound settings. Öhlins provides detailed recommendations for adjusting the fork based on rider weight and riding style, ensuring that you can achieve the best possible performance.
Comparison with Similar Models
When compared to other suspension forks in its class, the RXF36 m.2 stands out for its superior damping and adjustability. It offers a more refined performance, particularly for aggressive trail and enduro riders, who need a fork that can handle rugged [paid link] terrain and heavy impacts.
Unlike other models that offer limited adjustability, the RXF36 m.2 provides fine-tuned control over both compression and rebound, making it highly customizable for different riding styles and conditions. The RXF36 m.2’s air spring also provides a more consistent feel throughout the travel compared to some competitors, offering a smoother ride and more responsive handling.