93 Buick Centruy A/c Clutch Bearing Replacement?

Hey my A/C clutch bearing sounds like it is going out (rumbling sound)... I went to a junk yard and got a new comp. to swap in... 300 miles later its now making the same bearing noise that the old one did. I plan on replacing the ac clutch bearing...

I will try to rent a A/C clutch puller this weekend and pull the clutch off the other comp that I have.. Is there any thing special that I need to know? I have to get a pair of snap ring pliers...

Will the bearing come out easily? Do I need a hydralic press to put the bearing back in? Any other things I need to consider... Oh yea there is no refrigerent in the A/C it was taken out awhile back when I replaced the motor.