What do you think about rebuilding an original one with new seals for water resistance?
I did it twice on a A2 type crown, it`s a "monks job" and can take 1 -2 hours prying out the old O rings goo/tar. Once cleaned it is easy to push in 2 !! new O ring in size 3.8 x 2.4mm available from sample sets on ebay. Your tube outside should measure 2.5mm diameter so check it first.
Both cleared the 3 atm test but it is not work an Omega watchmaker can do as per Omega rules, nor is it something they have time for.
https://omegaforums.net/threads/would-need-an-advice-about-a-speedmaster-321-crown-a1.99931/
Inside of a crown when you remove the round "lid" taht i opened for science sake so dont do that yourself it is very very difficult to get that lid straight back in ;
I did it twice on a A2 type crown, it`s a "monks job" and can take 1 -2 hours prying out the old O rings goo/tar. Once cleaned it is easy to push in 2 !! new O ring in size 3.8 x 2.4mm available from sample sets on ebay. Your tube outside should measure 2.5mm diameter so check it first.
Both cleared the 3 atm test but it is not work an Omega watchmaker can do as per Omega rules, nor is it something they have time for.
https://omegaforums.net/threads/would-need-an-advice-about-a-speedmaster-321-crown-a1.99931/
Inside of a crown when you remove the round "lid" taht i opened for science sake so dont do that yourself it is very very difficult to get that lid straight back in ;
O ring/gaskets for crown on ebay, only use round ones - flat gaskets dont work here - and look for 3.8x2.4mm and 0.8 thickness or similair. Be carefull opening them as mine had the sticker on the wrong side so they all fell out....馃が;
@speedb curious to learn what solvent you used and for how long, that may be alot easier then prying them out !
O ring/gaskets for crown on ebay, only use round ones - flat gaskets dont work here - and look for 3.8x2.4mm and 0.8 thickness or similair. Be carefull opening them as mine had the sticker on the wrong side so they all fell out....馃が;
@speedb curious to learn what solvent you used and for how long, that may be alot easier then prying them out !
Left in acetone until i was sure there was no more gasket, acetone causes the gasket to swell and eventually disintegrate and does not leave any residue or damage the metal components of the crown. It also gets rid of any old grease or dirt.
And to make this DIY section complete @jolyon here is the pusher in parts. The cap on the left gets fixed on the pusher section sticking out of the case by the screw on the right which you screw in from inside the case after you take out the movement. The other parts are fixed into the case with a special "hollow" screwdriver. So have your watchmaker install new WP pushers and ask him to use the old caps.
edit ; there must also be a very small metal o-ring/washer mounted on the outside of the case, not pictured here
This only applies to screw in pushers, so 145.012 and up, and maybe late 105.012 ? as the early 105.012 have pressed in ones and i dont know that assembly.
