help with post war loco

My son has pushed our engine manually around the track and it is growling/ whining. Just wondering if anyone could help. Was working perfect before that.

Thanks, Dave

Sorry, but this forum is for REAL trains of the CLASSIC kind.

You will get a response to your question on either the Classic TOY Trains forum, or Model Railroader Forum . . .

Check the main page and you will see a magazine for EACH of the forums . . .

Good luck!

sORRY