The hard part sounds like removing/replacing the bearing. I would probably take that part to an automotive machine shop, but I'd do the rest myself.

Sounds great and less intimidating than my manual. One bearing is found and looking for 1 more to do both sides. Speaking of gear oil I just changed that out and am using 80w-140 because of the heat down here. Summers over 100 are common. Many, many thanks for the reply and I'll post how well the repair goes. I first must spend the next 2 days on duty at the local fire station so I will be delayed a bit. Have a great day, ODM in Dallas, Texas

I've never replaced a rear axle bearing, but packed mine many times. If you pack it with grease, it may work well enough to drive it some more.

My Nissan book says

1. remove the drum, then remove the four bolts holding in the axle
2. pull the axle out (easy enough, I put the drums loosely on backwards and "hammered" them off pulling sharply on the drum, sometimes a length of chain can be used if they are hard to get out). If you have a slide hammer, that migh work as well.
3. replace bearing locking collar by "nicking it deeply with a cold chisel in several places. It will then slide easily [off the axle]. Be careful not to damage the axle shaft with the chisel.
4. Set the bearing remover ([Nissan Tool] ST37130000) and remove the wheel bearing." ST37130000 looks like a very long tube with a threaded crank. I'm guessing it's a very long version of gear puller.

By the way, the bearings really do need packing every year when they get worn down (unless you put new bearings in). Using the thick "axle grease" rather than the "high-temp disc brake grease" will help the 90-wt from leaking past the seals so fast. New seals will help, but ball bearings always eventually wear and cause some play in the shaft, hence a little leaking past the seal. Roller bearings as used in disc brakes is a far stronger longer-lasting design. I guess the advantage of ball bearings is less expensive and less friction.

It's always something. Anyway, my right rear bearing is gone. First to locate a bearing, actually two for both sides, and the accompanying parts. Most parts have been located except the bearing proper at this time. I may have one located, but my main concern is any tips or techniques to replace those items with minimum frustration and broke knuckles? This will be one of those shade tree mechanics jobs done in the driveway. Dimlight, I'd drive over for a visit & a few pointers, but the right rear is just grinding away. I would appreciate any tips on this job. Many thanks and happy motoring, ODM