Most time the pin is frozen and needs heat and a press. You could spend 10 hours beating on a pin to save $50 in press work. We use a pin press like this one
http://public.snapon.com/R_RRD/Objec...ges/CG230A.jpg
I'd take the axle to the machine shop that's fitting the pins and have them press them out and check to see if you need over size pins.