Joe:
I believe the nut is a replaceable item isn't it? I would chisel the
nut loose. The way to do this without damaging the shaft is to place one
of the flats of the hex on something solid (an anvil or a vise is preferred).
Then place about a 1/2" wide chisel in line with the axis of
the thread and centered on the opposite flat of the hex. Four or
five good blows will spread the nut and you will likely be able to
remove it with a pliers. Try not to chisel all the way through the nut or
you will damage the threads of the shaft. Protect your eyes with
safety glasses. Then go out and buy a new nut.
Let us know how it works out.
Rolland
Westra
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