i haven't hit it with air yet, cause i don't have line to reach it out at the shop. that thing is on there tho.... been banging on it with a BAS hammer for about 30 min and cranking down on the puller and nothing. getting kinda frustrating. is there someway to maybe loosen up the pump and put a board on the front of it and try to push the pump backwards? any thoughts on this method? thanks guys