Learn how to remove and replace the crank arm on your Assault AirBike in just a few simple steps.
Tools Required
- Crank Puller, 22mm
- 8mm Hex Wrench
- Crescent or Adjustable Wrench
- Pedal Wrench
Steps to Removing and Replacing the Crank Arm on an Assault Air Bike
- If replacing a crank arm, remove the pedal from the crank arm. Click here to read about how to remove a pedal.
- Remove the crank arm bolt from the crank arm being replaced. You will need the 8mm hex wrench.
- Thread the crank puller into the crank arm and firmly tighten the top section using the crescent or adjustable wrench. Have you never used a crank puller before? Watch our video on how to use a crank puller.
Tech Tip
If you do not tighten the tool enough, you will strip the threads. This will ruin the tool or crank arm, if not, both.
- Working with the crank arm for leverage, loosen the bottom section of the crank puller with the crescent or adjustable wrench. If the crank puller has a built-in handle, turn the handle clockwise. This tightens the crank puller against the crank arm. As you continue turning the handle clockwise, the crank arm pulls free from the shaft.
- Remove the crank arm.
- Place the new crank arm on the shaft. Check to make sure the new crank arm is in an opposite position as the other crank arm.
- Install the crank bolt. Tighten the fixing bolt for the crank arm.
- Install the pedal.
- Check bike operation.
This completes removing and replacing a crank arm on an Assault AirBike.
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