These Atwood camper jacks must be 9 years old now. One refused to budge today and using the manual crank was nearly impossible. I removed the motor off the head and the jack screw now works fine, so...
I can't imagine that having a motor re-wound would be cheaper than buying a new one. Not many people do that work anymore to begin with, and they charge an exorbitant hourly rate when they do.
Just a couple of weeks ago I got my 10KW tractor-powered generator back from the electric shop. Bad windings. It was going to cost more than a new one to have it re-wound. It's scrap.