First off, do you consider yourself a pretty good mechanic? If not, then let someone else do this work. Second, I would not rush into doing anything at all until you have first become familiar with how it all works. And I mean very familiar. After doing this, then you should wind up the timelock movements and the mainspring to test operation with the door open. One thing you don't want to do is to wind up the automatic time lock and close the door. There is info on this forum and possibly some elsewhere. Once you have done some in depth research, then you should start asking specific questions you may have concerning the timelock or the double dial lock. Then when you do start tearing it apart, you will be ahead of the game, instead of behind the 8 ball. And post some pictures because many here would like to see it, myself included. Doug