My locomotive was purchased in 2002 and was immediately sent out to have a Phoenix sound system installed. It was also immediately converted to battery power and uses a Locolinc KT-2 hand held remote controller to run it.  Recently I placed the locomotive on my railroad to check clearances on some new buildings. It would not move. The sound system works just fine if you push the locomotive manually. The lights work just fine. When I apply power I can just hear a slow clicking sound that increases as I apply more power. I opened up the protective cover that cover the gear on the Axel and found it was not engaging with the small spur gear behind it. This is a floating Axel and when I pushed it to simulate being on track I still got the clicking sound. I already have assumed that the reduction gear assembly must be damaged in some way. QUESTION? Does anyone have disassembly instructions for getting to this motor and reduction gear assembly. I looked at the blow up drawing of the parts that came with the locomotive but this does not suggest how to disassemble the unit. Would Bachmann's excellent repair department be allowed to service a locomotive that has been professionally altered with after market equipment? If Backmann is not permitted to work on a altered locomotive does any one know of a service company I could use to repair it? I have had 8-trouble free years of running it and hope I can save this beautiful model. Thanks in advance for your suggestions and any help!

I recently installed the Quantum "plug and play" sound system in my beautiful K-27 locomotive. I have installed the NPN (radio shack#276-20 17) transistor per instructions. The sound starts up beautifully and the chuff's are perfectly timed. I find that as I slow down my locomotive the sound shuts off long before the locomotive stops. It have been told that the start up voltage required for the locomotive is different then that of the sound system. I am using my existing Aristo-Craft Train Engineer 10 amp power supply with the CRE-55473 controller. I also purchased and tried out the Quantum Engineer 28 button activator, (same problem either way). I also tried switching the train engineer from linear to P.W.C.,(same problem) Has any one else experienced similar conditions. I currently have 18 Bachmann Locomotives and have never had a problem with any of them before. I therefore assume that this condition is due to something that I did incorrectly. I had the transistor  installed by a friend of mine that is an electrical engineer with experience in soldering delicate circuit boards.