there are specific crank pulling tools that screw in to the threads on the inside of the crank arm that allow you to pull the crank off the BB spindle. sometimes the threads are stripped though and you have to resort to other methods. people have had success with pickle forks
there are specific crank pulling tools that screw in to the threads on the inside of the crank arm that allow you to pull the crank off the BB spindle. sometimes the threads are stripped though and you have to resort to other methods. people have had success with pickle forks