RE: os 91 surpass cam bearing removal
I'm sure there are a lot of different ways to do it, but I'd do it the same way my Dad taught me to remove clutch pilot bushings on cars. Pack the hole with some grease, and find a drill shank that is as close to the IDof the bearing as possible. (I use transfer punches but a drill will work). Put the shank of the drill in the ID of the bearing and tap on the drill with a piece of wood or something similar (so you don't ruin the drill).
The pressure ought to pop it out. Might need a little heat first, which might loosen it up.
Good luck!
Mark