Gary, thanks for taking the initiative to figure out the 1511 motor removal. I'll file the information away for future use!
Gene, I agree that the loco will need a sound set of wheels if you want repair and operate it. It is usually necessary to pull at least some of the drivers off the axles to work on the guts of the motor, so if there are already hairline cracks on the wheels, it is very likely they would break in the process. Until you can find some reproductions or a good set of originals, I think it would be best to leave the locomotive as-is.
Now, a question for those that are knowledgeable about pre-war Lionel: On early Marx locomotives, the electric and windup locomotives used similar die cast drivers (some of the wheels are identical). I have been able to use electric wheels - either stock or modified somewhat - on the windup motors. Are there any prewar Lionel
electric locomotives that use a drive wheel with the same or similar appearance to the wheels on the 1511 clockwork? If so, are reproductions available?
And of course, thanks to everyone for the kind comments about the clockwork repairs.
Steve, I look forward to working on the next Ives!