There was a post on the alley i used to replace my h2o pump. Maybe one of the Guys here can post it up.... Anyway i removed the pully by leaving the belt on and cracking the boots lose. Then take the belt off and procede as normal with a few beers! Dave has a write up on here to for Burping the system thats really helpful!
I understand this is more than likely late but just in case or jeewiz