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-   -   Tuna screws question (https://www.thewatchsite.com/34-watchmaking-tinkering/323393-tuna-screws-question.html)

Reynaldo 11-28-2018 03:32 PM

Tuna screws question
 
Finally got around to purchasing a clone of the 5700 caseback opener, which in turn made it easy for me to replace the crystal on my sbbn017 and a few other things while at it; battery, shroud, caseback and crystal gaskets. The crystal had a few scratches and the shroud just very few scuffs on the beadlasted finish and dings on the edges, nothing too bad just that I like this watch a lot and wanted to restore the newness look again. Iíll have to baby it now.

Anyway my question regarding the shroud screws is if itís common practice to use any thread lock to prevent rusting and pitting.

Interestingly, only the screws were like on mine, the threaded case holes and rest of surfaces are in perfect condition. I donít take a lot of pictures of everything but hereís few pictures:
https://uploads.tapatalk-cdn.com/201...0e362b9cd0.jpghttps://uploads.tapatalk-cdn.com/201...d9ce7c94a7.jpghttps://uploads.tapatalk-cdn.com/201...5ee330fd43.jpghttps://uploads.tapatalk-cdn.com/201...c926ec0de3.jpg
https://uploads.tapatalk-cdn.com/201...c7fd02846c.jpghttps://uploads.tapatalk-cdn.com/201...47668bf6c3.jpg ^ energizer battery!? I guess itís been replaced before.
https://uploads.tapatalk-cdn.com/201...8cf8a40e98.jpghttps://uploads.tapatalk-cdn.com/201...56eba1902f.jpghttps://uploads.tapatalk-cdn.com/201...ae83ae7199.jpg
https://uploads.tapatalk-cdn.com/201...7e27383077.jpg
The crystal easily pushes out. https://uploads.tapatalk-cdn.com/201...e24f2eb101.jpghttps://uploads.tapatalk-cdn.com/201...99b152574e.jpg
New parts except the caseback gasket gasket not showing, but used one of the 6309 replacements from the group buy. Same one. https://uploads.tapatalk-cdn.com/201...c43062634e.jpghttps://uploads.tapatalk-cdn.com/201...83fcba241a.jpg
Listo. https://uploads.tapatalk-cdn.com/201...0556b472e9.jpghttps://uploads.tapatalk-cdn.com/201...1a48761ebb.jpghttps://uploads.tapatalk-cdn.com/201...9b597e68ec.jpg
Done!
This was fun, just the remedy for me lately.

TheTigerUK 11-28-2018 03:59 PM

I don't know about others but I never use screw lock on Tuna shroud screws.

Reynaldo 11-28-2018 04:09 PM

My screws were dirtier than in the pictures, think it was probably used in water previously and just that area of the screws couldnít be rinsed out, maybe. I need to remember to remove the shrouds on the tunas I have from time to time the keep things clean.

Ps:
Thanks for the set of screws John!


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bry1975 11-28-2018 04:09 PM

Thread locker will knacker hex head screws.

TheTigerUK 11-28-2018 04:15 PM

Those are quality photo's Rey, I will be putting you on the list of fixers to go to ? :)

Reynaldo 11-28-2018 04:17 PM

Quote:

Originally Posted by bry1975 (Post 2680529)
Thread locker will knacker hex head screws.



Yep, specially if itís threaded in there super tight. I donít know if I read on an old post that Seiko puts something similar from the factory. https://uploads.tapatalk-cdn.com/201...b49a185656.jpg
I used a little bit of silicone grease for some rust protection when reinstalling, canít hurt anything.


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Reynaldo 11-28-2018 04:25 PM

Quote:

Originally Posted by TheTigerUK (Post 2680531)
Those are quality photo's Rey, I will be putting you on the list of fixers to go to ? :)



Haha!

Coincidentally my 7549-7000 circa Ď80 stopped ticking two days ago. https://uploads.tapatalk-cdn.com/201...7235b7e6f0.jpg
But Iím not gonna attempt to open it up myself.


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