I bought a 221 Locomotive in a box of train stuff at an estate sale and need some help understanding the motor.
It will not currently run and I am not understanding why.
I have cleaned the brushes and taken it down to the point I could remove the armature.
I put power to the field without the armature and it acts like an electromagnet which I think it should.
If I install the armature and put power to the motor leads it does not turn.
I tried checking for grounds and there is one thing I see that I do not know if it is correct.
If I check continuity on the armature I show continuity from one commutator face to another is that normal?
With power on the leads it has a locked armature and humms and will get hot (I presume because the rotor is locked).
At this point I am at a loss on what to fix or replace.
Larry
