The hub is pretty easy to change out. Take off the wheel, remove the axle nut, remove the caliper (2 bolts), remove the rotor, remove the hub bolts (3), then pull it off with a cheaper puller from someplace like Harbor Freight for $15. Then do the reverse to install it.
thx for the replies. yeah it is the rear. and it doesn't look tough....wish that grage was heated...but other than that the only thing that is making me pause is that the bearing needs to be pressed on. i was looking at this yearterday http://www.stu-offroad.com/axle/usad44/usa-1.htm i also found some forum posts(not on this site) about people freezing the axle and warming the bearing and then taking a pipe and hammer to it and driving the bearing on.......that just doesn't sit with me well. i just don't think it is a good idea to pound on the bearing. but if i am told it will work i can give it a try. i am also going to check to see how much a dealer would charge todo either the whole thing or see if they will just press the bearing on for me. what do you guys think?
You will need a bearing puller to get the race out. I used a 5/16 thick washer, ground 2 sides flat so it would fit in past the bearing race. With a nut welded to the centre of the washer, thread a slide hammer into it then it will come right out.