1. Rear wheel off
2. Exhaust end can off
3. Remove final drive and brake caliper
4. Remove rear shock
5. Undo and remove left side bearing pivot (put a jack under swinging arm to support it in position)
6. Undo the 3 outer bolts on the right pivot
7. Pull the right pivot --- either with a slide hammer screwed into the centre OR insert a rod through the left pivot and drift it out, it will probably be rusted in. Remove swing arm.
8. Push out bearings by inserting a socket extension through a bearing and use an appropriate socket to sit on the bearing inner face and drive it out. You can attach the socket in the driveshaft hole. Obvious when you see it.
9. Leave new bearings in the freezer for 24 hours before any of the above.
10. Clean up the bearing location. Give it a warm with a hot air gun and the new bearings from the freezer will tap in very easily.
11. ensure driveshaft is attached to gearbox properly. You can grease the splines whilst you're in there and check the UJ's for notchy or loose cups.
12. refit swinging arm over driveshaft and re-assemble everything.
Probably 2 - 3 hrs all in. Maybe a day if it's all corroded.
Not that hard though...
Roger.