I have one of those Hawthorne Village sets that the 2-6-0 loco runs but does not move, i suspect a gear issue. So, i am in the process of taking it apart and I just can't get the body off. I have no literature with an exploded pic and am working in the dark. Can anybody point me to where literature can be had or know the procedure to get the body off? so many detailed pieces to break makes it hard to man handle, lol. any help will be appreciated :).
Start by removing the pilot with one screw under the lead truck, and the smokebox braces. The boiler shell is press fit, with clips under the smokebox and at the rear of the Firefox. Careefully pry the s out starting at the front. The futon mine was very snug, so don't expect a sudden release. Once apart You will then have to take part the chassis. There is a parts diagram in the parts and service section of the main Bmann site.
There are guides online for removing the shell to install DCC decoders in these models.
Here are some I've used:
http://www.pacificcoastairlinerr.com/mogul_dcc/
https://www.youtube.com/watch?v=YtWmqzWXH-8