Use the proper puller.
Last fall I was rebuilding the front end on a my 71 C-10, and I bent a couple cheap pullers that were in my garage.
The pitman arm wouldn't budge. Finally, after wrestling the darn thing a couple of hours, I went down to our local Auto Parts Store (Autozone). They rented me a Actual Pitmman Arm Puller. Took about 2 minutes with that thing. After I kicked myself in the _ _ _ :mad: for being stubborn earlier, I returned the puller.
Best thing is they give you your total money back.
(They basically loan you the tool).
Good luck - but the proper puller will help (I think).
