topgun Posted April 6, 2014 Report Share Posted April 6, 2014 What must I do to replace the crown o-ring, and get the crown to lock down in a Daytona? The o-ring in my Daytona worked itself out one day when I pulled the stem to set the hands; now the stem won't lock down. I can still set the hands and wind the watch up; just can't lock it down. How can I install a new o-ring and fix the lock down issue (unless one automatically takes care of the other). A step-by-step will help immensely. Thanks. Quote Link to comment Share on other sites More sharing options...
freddy333 Posted April 6, 2014 Report Share Posted April 6, 2014 Depends on which Daytona model, which o-ring & which crown/tube you have. Provide answers to those questions & someone should be able to help you. In the meantime, if the crown will not screw down, the tube or crown threads are damaged & you will need to replace whichever part is damaged. Quote Link to comment Share on other sites More sharing options...
topgun Posted April 6, 2014 Author Report Share Posted April 6, 2014 116528 with 7750 movement. Quote Link to comment Share on other sites More sharing options...
sneed12 Posted April 7, 2014 Report Share Posted April 7, 2014 What must I do to replace the crown o-ring, and get the crown to lock down in a Daytona? The o-ring in my Daytona worked itself out one day when I pulled the stem to set the hands; now the stem won't lock down. I can still set the hands and wind the watch up; just can't lock it down. How can I install a new o-ring and fix the lock down issue (unless one automatically takes care of the other). A step-by-step will help immensely. Thanks. I don't think you are describing the issue accurately. The o-ring doesn't lock anything down, it simply provides a seal for water-resistance purposes. Quote Link to comment Share on other sites More sharing options...
mymanmatt Posted April 7, 2014 Report Share Posted April 7, 2014 Sometimes the o-ring will slip out of the tube. When it does it get sort of cocked over the crown tube. When that happens you need to take a needle, and work the o-ring back into the tube. It will probably come out again. If that happens remove the stem, with the crown still on it, and replace the o-ring. If you can't find the correct one put a drop of super glue on the outside of the o-ring and reinstall it into the tube. When I say a drop I mean about as much as you can get on the end of a needle. Oil the post ont crown and reisert into the movement. That should do it. Quote Link to comment Share on other sites More sharing options...
freddy333 Posted April 7, 2014 Report Share Posted April 7, 2014 If at all possible, I would avoid super gluing o-rings that do not fit or stay in place. If the o-ring slips out, you have the wrong o-ring. Get the proper 1 & that should solve the problem. Quote Link to comment Share on other sites More sharing options...
ilikewatchestoo Posted June 2, 2017 Report Share Posted June 2, 2017 Damn! Love that! I have been looking for one very similar! Where did you source this? Quote Link to comment Share on other sites More sharing options...
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