It's a big question and depends vey much on how it was put together. Ususlly you remove the winders, the glass face, the hands and then take the guts out either from the front or from the back. The hammer on the bell asembly may need to be removed too. However.....
Given that you need to ask this question what do you hope to achieve after you've managed to dismantle it?
M Boggles
October 2009