I bought this postwar 2340 a few weeks ago and after running it several times for about fifteen minutes the engine slows down and I have to apply more and more voltage to keep it going until I can smell the motor overheating and it stalls. Have had the trucks off, the truck wheels spin freely when I rotate them and the commutator shaft spins freely. The truck gears are pretty loose between the teeth and the commutator shaft is a little loose in its bushing. When I put it back together it stalls again after a short running time and the truck wheels are seized and will not rotate. I suspect these loose conditions in the truck gears and commutator shaft are the source of the stalling but would appreciate any opinions. The motor and trucks are very clean and I have fresh lubricant applied.
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