I've just finished removing the smoke unit from both of my moguls and am looking forward to years of worry free service. I must say it was a quick, easy and trouble free process and I'd like to thank Bachman for this well built and wonderfully simple little engine.

Thank you very much. The video was very useful. It looks very easy to open up the loco so I think I'll remove the smoke unit to be on the safe side.

I am just getting back into the hobby after a several year absence. I had a little kid layout when I was younger, a table with some nailed down track. But now I want to do it properly.
Anyway, I have a pressing question. I have purchased the Spectrum 4-6-2 pacific and two Bachman 2-6-0 moguls with smoke. I have seen some comments that certain smoke units can cause melt damage to the loco's stack. I DO NOT want to run my engines with smoke, seeing the oily mess it has made of some very nice looking loco's. Will this endanger my moguls? How easy is it to open up the engine and disconnect the smoke unit? Thank you for your time.