Hy 801curt, there probably is an access hole behind the pin in the frame that you can use to drive the pin out with a large punch. I made up a tool to pull the pins out using a threaded rod which I re-threaded to 1/8" pipe thread on the end which screws into the grease fitting hole once it is removed, a piece of pipe/tubing a little longer than the pin and a heavy washer and a nut to thread down the rod has removed every one I have tried so far. You should take the tension/weight off of the pin before you attempt to pull or drive it out, hope that helps.