For whatever reason, I thought I'd break out some of my old HO scale items that were in need of repair.
I've got several Akane brass engines; quite awhile ago, one of my Mikes just quit working. (As it turns out, this is the oldest of my Akanes: it has a build date of December 22, 1960.)
I was able to determine that 2 of the 5/7(?) commutator contact wires from the armature had become disconnected: a little flux, a spot of solder and it's now back in top form. Very smooth and quiet. The fact that the motors on these were so logically designed and built made it easy to take apart, fix and re-assemble. Sometimes, you gotta love the old stuff.
To be continued...
Mark in Oregon