Anyone know what this sound is?

Sounds like the smoke unit fan! Not 100% sure but the loco is an older version, perhaps Odessey. Is there smoke coming out of the stack? I have a couple of older TMCC engines, with some of them making the same noise, it's normal! Someone else with more experiance will chime in.

      Steam Forever

             John

Yes, the smoke unit motor needs some oil on the top bearing. It happens twice per revolution of the drivers. On Lionel, the smoke unit motor runs whether the smoke switch is on or off. The switch turns on/off the heaters.

Chuck Sartor posted:

Yes, the smoke unit motor needs some oil on the top bearing. It happens twice per revolution of the drivers. On Lionel, the smoke unit motor runs whether the smoke switch is on or off. The switch turns on/off the heaters.

Ah ha. So what oil should be applied and where?

and I don’t need to worry about this sound?

Truthfully, I just replace the smoke motor if it starts making noise.

I just got the same loco give me latter today and I'll try to send a vid of mine with the sounds off. If I remember correctly my tmcc J does the same. Give some time and I'll get the vid.

Some Lionel TMCC locomotives that have chuffing smoke didn't disable the smoke fan when the smoke was turned off.  My first generation Super-Chuffer also did the same thing.  It annoyed me enough that I did a second generation Super-Chuffer II and that was one of the top changes on my list.