How to Remove Mountain Bike Crank Without Puller: A Step-by-Step Guide
To remove a mountain bike crank without a puller, first, remove the pedals and the bolts holding the crank arms on. Then, place a wooden block or a small piece of wood against the backside of the crank and use a rubber mallet to hit it gently until the crank arm starts to come loose. Repeat this process on the other side until the crank arms are completely removed. Be careful not to hit the frame or bottom bracket when removing the crank.