A/C compressor bearing

Ugh. Compressor bearing just went on a quality Advance Auto Parts A/C compressor less than a year old. Can't use the warranty because we had it for a while before we put it in. Don't really want to buy another one but obviously we need one to run the truck. Anybody know how to replace just the bearing? Can't figure out how to get it all apart. I generally do all work on my vehicles myself but I'm stumped on this. I'm desperate - winter's not over and it's my only 4WD!