marcoxxx1984 Posted January 7, 2010 Report Share Posted January 7, 2010 Hi friends, I am a proud owner of a nice 16600... today I changed the date and when I tried to screw the crown pushing it (as usual) I notice that I can not screw the crown because it always cames off... What can I do?? what is it broken? I note that the crown and the tube are gen!! Thanks a lot! Link to comment Share on other sites More sharing options...
hiker01 Posted January 7, 2010 Report Share Posted January 7, 2010 You're not suppose to screw the crown....that would hurt......... Link to comment Share on other sites More sharing options...
alligoat Posted January 7, 2010 Report Share Posted January 7, 2010 The stem screws into the crown. This also means that it can come unscrewed. If it does, maybe you can rescrew it back into the crown, or if it's too short, you may need to get a new stem. You'll have to open the case and remove the stem from the backside- depress the release, etc. At that point you might want to consider a watchmaker. ETA stems are easy to get, not so sure about the asian 21j's though... I did have the stem threads on a gen 1680 sub crown strip out- had to get a new crown at that point. Stem was OK. Link to comment Share on other sites More sharing options...
freddy333 Posted January 7, 2010 Report Share Posted January 7, 2010 A good, clear pic of the crown/stem would help, but it sounds like either the crown has unscrewed from the stem or the stem has broken/dislodged itself from the movement. In either case, you will probably need to remove the movement from the case & inspect to locate the problem. Link to comment Share on other sites More sharing options...
Toadtorrent Posted January 7, 2010 Report Share Posted January 7, 2010 ...or it could be that you have a damaged clutch or whatever it's called in the crown (i.e. damaged crown) that should just spin when not pushed in...and will turn the stem when pushed in. My busted one only turned the stem when pulled out or down...a bit tricky to turn re-insert/re-install the stem. I had a post on this somewhere...I'll look for it later if you PM me if you want...I had to replace the crown on mine...the trick was finding one that fit the existing tube. Link to comment Share on other sites More sharing options...
preacher62 Posted January 7, 2010 Report Share Posted January 7, 2010 Is the problem that the crown comes unscrewed from the stem or is it that the crown does not screw down on the tube? I wouldn't think this with a gen crown and tube, however, with others the threads in the crown wears out to the point that you can't screw it down on the tube. A new crown would fix that problem. Link to comment Share on other sites More sharing options...
marcoxxx1984 Posted January 8, 2010 Author Report Share Posted January 8, 2010 Finally I screwed the crown... I think I will never change the date and set the time again... Link to comment Share on other sites More sharing options...
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