Not sure if we are supposed to put links in here but 67-72 Chevy truck forum has some information on which way to bend the hinges to pull the door in our out. It is helpful for minor movements. If you are looking for information on getting the pins out, a press really would be the way to go. I bought a really big bench vise and bolted it to my bench on a big steel plate. That helped as well. There are some tech tips on here which are helpful but I would be prepared for the reality that your pins may really really really resist being hammered out. A press or a big vise are a requirement I think.
