There have been several posts on this over the years if you search the archives.
You need a press to put on the new bearing, and a dremel tool to score the retaining ring and the bearing race so you can crack them with a chisel and get them off. This was my excuse to get a press at Harbor Freight. You need a fairly tall one. Mine stands about 5'6" tall.
The hardest part is getting off the rear rotor. Between the rust and the grooves in the parking brake surface, getting the rotor off without damaging it is pretty tough.
Sit down on the floor and put your feet on the inner fender when pulling the axle. If you squat down and jerk like I did, you end up across the garage floor with a greasy axle in your lap.
It is tough to tell which side is the outside on some wheel bearings. I got one right and one reversed when I did it the first time. The one that was backwards came apart immediately and the axle was floating in and out about 1/8 inch. I drove it that way for over a year before I got around to putting another bearing in it. I could not figure out what the problem was until I pulled out the axle and saw the bearing that was in two pieces. Once the bearing has broken open, it is real easy to see which way it SHOULD have gone in.
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