How to Remove Press Fit Bottom Brackets (BBs)
Removing a press fit bottom bracket (BB) can be a challenging task, especially if you’re not familiar with the process. However, with the right tools and techniques, it’s entirely possible to remove a press fit BB without causing damage to the frame or the BB itself. In this article, we’ll guide you through the steps of how to remove a press fit BB safely and efficiently.
Understanding Press Fit Bottom Brackets
Press fit bottom brackets are designed to fit tightly into the frame without the need for any adhesive or threading. This design allows for a lighter and more aerodynamic frame, but it also makes the removal process more complex. The BB shell is typically made of aluminum or carbon fiber, and the press fit BB is inserted into the shell using a special tool called a BB press.
Tools Needed
Before you begin the removal process, ensure you have the following tools:
– A BB press or a bottom bracket removal tool compatible with your specific BB model.
– A torque wrench to ensure the correct torque is applied during the installation.
– A set of hex keys or an Allen wrench.
– A pair of vice grips or locking pliers.
– A rag or cloth to protect the frame.
Step-by-Step Guide to Removing a Press Fit BB
1. Identify the BB Model: Check the manufacturer’s specifications or the bottom bracket itself to determine the type of press fit BB you have. This information will help you select the appropriate removal tool.
2. Prepare the Frame: Clean the BB area of the frame to ensure a smooth and damage-free removal process. Apply a thin layer of grease to the BB shell and the BB threads to reduce friction.
3. Position the Removal Tool: Place the BB removal tool over the BB shell. Ensure that the tool is centered and properly aligned with the BB threads.
4. Secure the Frame: If your removal tool has a built-in clamp, secure it to the frame. Otherwise, use vice grips or locking pliers to hold the frame in place.
5. Apply Torque: Gradually apply torque to the removal tool, starting with a low setting. Continue to increase the torque until the BB begins to loosen.
6. Remove the BB: Once the BB starts to move, continue applying torque until it’s fully removed from the frame. Be sure to keep a firm grip on the frame to prevent it from moving during the process.
7. Check for Damage: Inspect the BB shell and the frame for any signs of damage or wear. If necessary, clean and lubricate the BB threads and the BB shell before installing a new BB.
8. Dispose of the Old BB: Properly dispose of the old BB, as it cannot be reused with a different frame.
Conclusion
Removing a press fit bottom bracket requires patience and the right tools. By following these steps, you can safely and efficiently remove your press fit BB without causing damage to the frame or the BB itself. Always remember to consult the manufacturer’s instructions and use the appropriate tools for your specific BB model.
