Dieseler posted:From the looks of the wiring it should be spinning in proper direction but would check anyways .Some years back bought a tender off the bay and it did similar to yours as armature spun well after cleaning the brushes and commutator only to find a piece of tissue stuffed in the sound box .
It was probably stuffed in there by a child long ago as we sometimes forget these were played with by children mostly.
Surely you cleaned the brushes to remove any residue and cleaned the armature commutator plate so it will spin fast enough to generate sound only thing left would be that sound box as CW mentioned.
Yup, Dieseler, it is spinning counter clockwise, so it has to be an internal alignment issue with internal air leaks.
Time to take it all apart and start over. At least it isn’t rusty any more
