Play Doh works a lot better than grease for the pack method. It is thicker, and doesn't make a mess when you reef on it.
The method used is to pack behind the bearing with the play doh and use a dowel or spare input shaft as a piston to hydraulically force out the bearing.
You can also us a slide hammer if you have the right shaped attachment to grab the inner lip of the bearing. That works ok on my BMW but not on my Chevy.
