Indoor Cycle Repair, How to Remove a Morse Crank Arm

Removing a Morse crank arm can be a bit challenging, but with the right tools and techniques, it can be done.

Tools Required:

• 22mm Crank Puller
• Allen Wrench Set

Procedure:

Here are the steps to remove a Morse crank arm:

1. Remove the chain or belt from the sprocket or pulley and drive assembly.
2. Locate the crank bolt attaching the arm to the bottom bracket.
3. Loosen the crank bolt using an allen wrench. Turn the wrench counterclockwise to loosen the bolt.
4. Remove the bolt and washer or any spacers from the arm.
5. Insert the crank puller tool into the threaded hole in the center of the crank arm. Click here to watch a video on using a crank puller.
6. Turn the crank puller tool clockwise until it is snug against the bottom bracket spindle. Click here to read tips on using a crank puller.
7. Using the handle of the tool, continue turning clockwise to pull the crank free from the shaft. You may need to use a wrench to turn the tool.
8. Once the crank arm is loose, remove the crank puller tool and then the crank arm from the spindle.

This completes the steps of how to remove a morse crank arm.

It is important to note that different types of crank arms may require slightly different techniques or tools, so it is important to consult the manufacturer's instructions or seek the advice of a professional mechanic if you are unsure.