If you do a search, you'll find a lot of walkthroughs. Fair warning, you're gonna hate this job.
From memory, pull the axle. The castle nut is a bear so loosten it with the car on the ground with an impact gun or a breaker bar and a long piece of pipe. If you go the breaker bar route, don't be surprised if you have to stand/jump on it. They're a pain on these old cars. Jack it up and remove the wheel, caliper, disk. Then put the castle nut on the stub backwards and start hitting it with a BFH until the axle lets go. Alternatively, you can use an air chisel with a round bit and just blast it out. The round bit will fit nicely in the divot in the end of the stub. Much easier this way. Once the axle is gone, unbolt the bearing cover and beat the old bearing out. Can be done with a blunt and fist mall from under the car or again, pull out the air chisel.
Assembly is the reverse of dissasembly. Freeze the new bearing at least over night in your freeser, it'll shrink a little that way and fit into the race easier. I've made a tool out of a couple of pipe flanges and some allthread to press them home quickly. You'll need to fashion some sort of press to get the new bearing in.
12 hours later you'll have finished one of the more challenging jobs on a teener. GOOD LUCK!
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