Re: How do I change one piece crank to 3 piece crank?
Undo the nuts on the side of the 1 piece crank, and take off the pedals. You should be able to snake the cranks out one end. Remove all pieces and clean up the grease. The new crank will slide in, and bolt on the same way. Make sure to put lithium grease on it. The new crank arms will simply bolt up.