LOL did I have to do anything to the motor ? !!!Definition of miracle - 100 yr old tinplate motor that doesn't need work. I could write a book, Prewar Tinplate Motors in my Life
My apologies to trainfam - not making fun of you, but there is no short answer to that question. It's actually very interesting. Tomorrow (or the next day) I'll take some more photos and write about the details.
For now, the short answer is that any time I get a prewar motor the first thing I do is take it apart for cleaning and to fix whatever is wrong with it.