Reply to "AM K4 Pacific won't run anymore...and I caused the problem"

richabrOGR Forum Member

A common problem on AM drive. The universal socket that is pressed on the motor shaft develops a longitudinal crack that is difficult to see. Symptoms are a clicking noise when running on track or the engine spins and there is no drive wheel movement when the engine is under load and on the track. I have replaced several, even on older engines that were never run. Probably is something with the type of plastic used in construction. It is a relatively easy fix.

2/11/2111:01 AM

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