Rebuilding your Cane Creek DB Kitsuma Air [paid link] rear shock is an essential skill for any mountain biker who values peak [paid link] performance and durability. This detailed guide will walk you through the step-by-step process of disassembling, servicing, and reassembling your DB Kitsuma Air [paid link] rear shock at home. With proper tools and careful attention to detail, you can restore your shock’s performance without the need to send it out for professional service.

Tools Required

• Shock pump
• Cane Creek shock oil
• 5mm, 6mm, and 8mm Allen wrenches [paid link]
• Torque wrench [paid link] (up to 30Nm)
• Small flathead screwdriver
• Large flathead screwdriver or shock shaft clamp (optional)
• Shock oil, grease, and suspension fluid
• Clean rags
• Isopropyl alcohol (for cleaning)
• Shock rebuild kit (for seals and O-rings)

Preparing the Rear Shock for Service

Before beginning any work on your DB Kitsuma Air rear shock, ensure that you are working in a clean, well-lit environment. Dirt and debris can affect the performance of the shock, so cleanliness is key.

1. Remove the shock from the bike: Use your 5mm Allen wrench [paid link] to detach the shock from the frame. It’s often best to remove both the upper and lower mounts to avoid damaging the shock during disassembly.
2. Release the air pressure: Using the shock pump, release all air from the shock. It is essential to fully depressurize the shock before disassembling to prevent injury and avoid damaging internal components.
3. Place the shock on a clean surface: Lay the shock on a clean, flat surface such as a workbench or cloth to prevent scratching or damage to the shock body.

Disassembling the DB Kitsuma Air Rear Shock

Now that you have prepared your shock, you can begin the disassembly process.

1. Remove the air can: Start by using the 8mm Allen wrench [paid link] to loosen and remove the fasteners securing the air can to the shock body. Once the bolts are removed, gently slide the air can off the shock body, being careful not to damage any internal seals. Set the air can aside.
2. Disassemble the damper: The next step involves removing the damper assembly. Use your 6mm Allen wrench to unscrew the bolts holding the damper to the shock body. Once removed, carefully pull out the damper. If it’s stuck, lightly tap it with a rubber mallet to loosen it.
3. Remove the seals and O-rings: With the damper removed, you’ll need to take out any seals and O-rings. These can wear out over time, affecting the performance of your shock. Use a small flathead screwdriver to carefully pry out the seals and O-rings. Take care not to scratch the surfaces where they sit, as this could cause future leaks.

Cleaning and Inspection

With all components disassembled, cleaning and inspection are critical steps before reassembly.

1. Clean the shock components: Use isopropyl alcohol and clean rags to wipe down all components of the shock. Pay particular attention to the shock body, damper, and air can, ensuring that no oil or dirt remains.
2. Inspect for damage: Check the damper, air can, and shock body for any visible damage or wear. If you notice any cracks, deep gouges, or other signs of damage, it may be necessary to replace the affected parts. Also, inspect the shock shaft for smoothness and any signs of wear.
3. Lubricate components: Lightly lubricate the seals, O-rings, and shock body with suspension fluid or appropriate grease. This will help prevent wear during reassembly and ensure smooth movement.

Rebuilding and Reassembling the DB Kitsuma Air Rear Shock

Once all parts are cleaned, inspected, and lubricated, you can begin the reassembly process.

1. Reassemble the damper: Carefully insert the damper back into the shock body. Ensure that it is seated properly and aligned with the mounting holes. Use your 6mm Allen wrench to tighten the bolts to the manufacturer’s recommended torque setting (usually around 20-25Nm).
2. Replace the seals and O-rings: Take the new seals and O-rings from the rebuild kit and place them in their designated positions. Make sure the seals are properly seated and lubricated. Reassemble the shock by sliding the air can back onto the shock body, ensuring that all seals are properly aligned.
3. Reattach the air can: Once the air can is in place, use the 8mm Allen wrench to reattach the bolts securing the air can to the shock body. Tighten them to the manufacturer’s recommended torque setting, typically around 10-15Nm.
4. Double-check assembly: Before moving forward, double-check that all parts are properly assembled, and all bolts are securely tightened to the correct torque.

Recharging the Shock with Air

Once your DB Kitsuma Air rear shock is reassembled, it’s time to add air and fine-tune the pressure.

1. Set the sag: Using the shock pump, inflate the shock to the manufacturer’s recommended pressure. This will typically be based on your rider weight and the type of riding you do. Set the pressure based on the recommended settings for your weight and the specific model of the DB Kitsuma Air shock.
2. Check for leaks: Before reattaching the shock to your bike, inspect it for any air leaks. Use a soapy water solution to check for bubbles around the seals. If you notice any leaks, disassemble the shock again and ensure all seals are properly installed.

Reinstalling the Rear Shock on Your Bike

With the shock fully reassembled and recharged with air, you can now reinstall it on your bike.

1. Attach the shock to the frame: Use the 5mm Allen wrench to reattach the shock to the bike frame. Ensure that both upper and lower mounts are securely fastened. Be sure not to overtighten, as this can cause damage to the shock or frame.
2. Set the sag and suspension settings: Once installed, fine-tune the shock by adjusting the air pressure or rebound settings as needed. It’s recommended to check the suspension sag again after installation to ensure it is at the correct level for optimal performance.

Troubleshooting Common Issues

Even after a successful rebuild, there may be some issues that arise with your DB Kitsuma Air rear shock. Below are some common problems and potential solutions:

1. Sag issues: If you find that the sag is too high or too low, you may need to adjust the air pressure. Too much pressure can result in insufficient sag, while too little pressure can cause bottoming out. Adjust the pressure in small increments and test the shock after each adjustment.
2. Rebound damping issues: If the rebound is too slow or too fast, check that the rebound adjustment is properly set. If the rebound damping is inconsistent, you may need to rebuild the damper or check for internal damage.
3. Air leaks: Air leaks around the seals or air can are a common issue. If the seals have been damaged or are worn out, replace them immediately. Make sure the air can is securely fastened and the seals are lubricated.

Final Thoughts on Rebuilding the DB Kitsuma Air Rear Shock

Rebuilding the DB Kitsuma Air rear shock is a rewarding process that can extend the life of your shock and improve your bike’s performance. By following the steps outlined above and ensuring proper maintenance, you can keep your shock working like new for years to come. Regular maintenance and rebuilds will not only optimize performance but also ensure that your rear shock is always in peak [paid link] condition for every ride.