Today I pulled both ball bearings off the armature so I could clean
the old dirty grease out, and then repack the bearings.
I shined up the commutator, spinning the armature on the lathe,
and used sand paper.
I “tried” soldering on a heavy gauge wire to a field coil connection that
looked like it had a wire hooked to in the past.
I put the motor back together, omitting the rheostat, seeing if I could
get any action out of the motor using a 12v battery.
While my solder job adding the hot wire to the field coil looked “fair”,
the connection failed right away and the motor never got excited!
Back to the drawing board.
Prepare to be boarded!