I bought a really nice postwar Lionel 2031 AA Alco set. It turns out the dummy A has a geared front truck and THIS motor inside. Obviously the armature has no worm to work in the geared truck. So what is it? It came with this mechanical e-unit without a lever. I thought maybe it’s for the 397 coal loader because I recall that motor has some coupling on the armature shaft, but then why the e-unit? I just noticed that the whole motor is taller than this 2028-type motor I have. Does this look like a 773-type Hudson motor? I apologize in advance these pictures look dim.
