The Öhlins TTX1Air rear shock is a high-performance suspension component designed for both professional and recreational cyclists. Whether you’re upgrading your bike for better handling or need to maintain your TTX1Air for optimal performance, it’s essential to understand the proper installation, adjustment, and maintenance procedures. This guide provides you with the necessary steps and tips to service your TTX1Air rear shock, ensuring longevity and peak performance.
Tools Required
Before starting any service on the TTX1Air rear shock, make sure you have the following tools:
- Torque wrench [paid link] (0-60 Nm range)
- Shock pump with pressure gauge
- T25 and T30 Torx wrenches
- 5mm and 6mm hex wrenches
- Flat-head screwdriver
- 10mm spanner
- Soft cloth or towel for clean workspace
- Oil for servicing (Öhlins recommended oil)
- O-ring pick (for maintenance)
- Needle-nose pliers
- Clean rag or paper towels
- Plastic container (to catch fluid)
Disassembling the TTX1Air Rear Shock
Step 1: Remove the Shock from the Bike
Start by removing the rear shock from your bike. Use a 5mm hex wrench to detach the shock’s mounting bolts from the frame and the linkage. Carefully slide the shock out of its mount. If the shock is hard to remove, gently rock it to loosen it, ensuring that you don’t damage any internal components.
Step 2: Prepare for Servicing
Place the shock on a clean, soft surface like a towel or a workbench to protect its components from scratches and dirt. It’s important to work in a dust-free environment to prevent contaminants from entering the shock during the servicing process.
Step 3: Disassemble the Air Can
To access the air chamber and internal components of the shock, you must remove the air can. First, use a 10mm spanner to loosen the locknut. Once the locknut is removed, use a T30 Torx wrench [paid link] to take off the screws holding the air can in place. Carefully pull the air can off, making sure to avoid damaging any seals.
Servicing the Internal Components
Step 4: Inspect the O-rings and Seals
The O-rings and seals inside the TTX1Air shock are crucial for maintaining proper pressure and smooth function. Inspect these components for any signs of wear, cracking, or damage. If you notice any issues, it is recommended to replace the O-rings with new ones from Öhlins.
Use the O-ring pick to carefully remove any old or damaged O-rings from their grooves. Apply a small amount of oil to the new O-rings before installing them, which will help with smoother operation and prevent dry sealing.
Step 5: Clean the Air Chamber and Shaft
Use a clean cloth to wipe down the inside of the air can and the shaft. Be sure to remove any dirt, dust, or old grease that might have accumulated over time. Be gentle to avoid scratching the shock components. If the shock is leaking air, clean the air valve to ensure proper sealing.
Step 6: Lubricate Moving Parts
After cleaning, apply a thin layer of Öhlins-recommended oil to the shock shaft and any other moving parts. This will ensure smooth movement when reassembling and prevent internal wear. Be cautious not to over-lubricate, as excess oil can attract dirt and grime, which could hinder the performance of the shock.
Reassembling the TTX1Air Rear Shock
Step 7: Reinstall the Air Can
Once the internal components are cleaned and lubricated, carefully slide the air can back into place. Ensure the O-rings are properly seated and the air can is aligned correctly with the main body of the shock. Use the T30 Torx wrench [paid link] to tighten the screws that secure the air can. Be sure to torque these screws to the manufacturer’s specifications to prevent any leaks or damage.
Step 8: Check the Pressure
After reassembling the shock, use a shock pump with an accurate pressure gauge to set the recommended pressure for your weight and riding style. For the TTX1Air, the air pressure should be within the range specified by Öhlins, usually between 150-250 psi, depending on your body weight and the terrain you ride on. Make sure to pressurize the shock slowly and check for any air leaks before proceeding.
Step 9: Secure the Shock to the Frame
Once the shock is properly pressurized, reattach the shock to your bike. First, ensure that the mounting hardware is clean and free of debris. Use the appropriate torque wrench [paid link] and torque the mounting bolts to the manufacturer’s specifications, which is typically around 25 Nm. Be careful not to over-tighten, as this can cause damage to the shock or the frame.
Troubleshooting Common TTX1Air Rear Shock Issues
1. Loss of Air Pressure
If you notice that the shock is losing air pressure, it may indicate a problem with the air seals or valves. Start by checking the valve and tightening it. If the issue persists, inspect the O-rings and seals for damage and replace them as necessary. If the seals appear fine but the problem continues, consider having the shock professionally serviced.
2. Inconsistent Damping Performance
Inconsistent damping performance could be due to dirt or air bubbles inside the shock’s fluid. This can be resolved by performing a complete service, including draining the shock and refilling it with the proper fluid and ensuring that the air chamber is free of any contaminants.
3. Noisy Shock
A noisy shock can be the result of dirt and debris in the shock’s internals. Regular cleaning and lubrication of the moving parts will prevent this issue. If the noise persists, check the shock’s bushings and bearings for wear and replace them if necessary.
Customization and Optimization
1. Fine-Tuning the Damping
The Öhlins TTX1Air shock comes with an adjustable damping system, allowing you to fine-tune your ride. You can adjust the high-speed and low-speed compression as well as the rebound to match your specific needs and preferences. Start with the recommended settings from Öhlins and make incremental adjustments to suit your riding style. Keep track of the settings you change so you can revert back if necessary.
2. Adjusting the Air Pressure
Adjusting the air pressure is one of the easiest ways to customize the TTX1Air shock. If you prefer a firmer feel, increase the pressure slightly. For a softer ride, decrease the air pressure. However, always ensure the air pressure stays within the recommended range to avoid damaging the shock.
Comparing the TTX1Air with Other Models
When compared to other high-end rear shocks, such as the Fox Float X2 or RockShox Super Deluxe, the Öhlins TTX1Air stands out due to its advanced air spring design and superior damping control. Its external adjustments for both compression and rebound allow for greater customization, making it ideal for riders who demand precision tuning.
Although the Fox Float X2 offers a similar level of adjustability, the TTX1Air’s smoothness and air spring design make it the preferred option for those seeking a more responsive and supple ride. In contrast, the RockShox Super Deluxe may be more affordable, but it offers fewer tuning options compared to the Öhlins model.
Conclusion
Servicing your Öhlins TTX1Air rear shock is an essential part of maintaining the performance and longevity of your bike. By following the steps outlined in this guide, you can ensure that your shock remains in top condition, offering you a smooth and controlled ride. Regular maintenance, along with proper adjustments, will help optimize the shock’s performance, enhancing your overall cycling experience.