Thank you!
The nut was removed in a counter-clockwise direction after clamping the transmission to the super structure, and putting a 3/4" iron pipe through said super structure onto which I placed my 189 lbs. of human being so that the entire assembly would not rotate. Then by using a 24", 1/2" drive breaker bar with three extensions attached, the nut finally loosned it's grip on the splined shaft. Quick use of an automotive gear puller demolished the spin hub and it was necessary to chisel/pnuematic grinder that off into about thirty pieces, of course supporting it against the outer tub with plywood to as to not cause undo stress on the two shafts. Other than that, it went quite well. Tomorrow, I will begin the task of cleaning everything so that I can bring the parts home Monday night and begin the reassembly. The motor is good and spins freely both directions at both speeds with no side-play so I am hoping to get another fifteen years out of this machine.
Thanks again,
Rick