This is one of my work horses that has operated for more than 8 years... say. When last week while pulling a load of 8 cars, the locomotive went into spinning the rear wheels (trucks) and the front wheels (trucks) not spinning. Got it back into the maintenance shop and found that the front drive shaft separated from the worm gear shaft. See image.
Thought this would be a simple fix, that is, just slip the connecting rod (yellow lined) back onto the worm gear shaft and all would be well. NOT! I put the locomotive back on the track and within say 10 track feet, it slips off again. I tried glue on the back side of the shaft (motor side), but that failed. So I'm at a lost as to how and/or what keeps the shaft connecting rod in place. I don't see any issues with the other shaft and I also don't know or see what's keeping the other connecting rod on the worm gear rear trucks.

I'm missing something, but I'm at a lost at this juncture. Oh, Bachmann doesn't have that connecting rod (yellow lined) piece as an individual piece to purchase. So, can anyone inform me of what I'm missing or advice on fixing this issue?
Thought this would be a simple fix, that is, just slip the connecting rod (yellow lined) back onto the worm gear shaft and all would be well. NOT! I put the locomotive back on the track and within say 10 track feet, it slips off again. I tried glue on the back side of the shaft (motor side), but that failed. So I'm at a lost as to how and/or what keeps the shaft connecting rod in place. I don't see any issues with the other shaft and I also don't know or see what's keeping the other connecting rod on the worm gear rear trucks.
I'm missing something, but I'm at a lost at this juncture. Oh, Bachmann doesn't have that connecting rod (yellow lined) piece as an individual piece to purchase. So, can anyone inform me of what I'm missing or advice on fixing this issue?





