Jump to content

Creating new cover plate / detent spring


Recommended Posts

I just got a new old watch in the mail to restore for a friend. Watch runs but is very dirty. Main problem is that the cover plate/ detent spring in the keyless works has broken. Some rust must have done its work to weaken the part. 
 

to get to the point, what would work as a base stock material for this part. And would any special tempering be needed to get the detent to function correctly. 
 

the time setting and winding still works. But I do not want to skip out on necessary repairs for this watch. 

IMG_1650.jpeg

IMG_1649.jpeg

IMG_1648.jpeg

Link to comment
Share on other sites

  • 2 weeks later...

hi, it appears to be an ETA 980 [ETERNA 1025] which is an 8 3/4 line movement [ladies size] , you should be able to find a new perfectly fitting part at any supplier, Ebay etc.. A junk movement needs to be seen without a dial if you go that route.....I currently see one on eBay for 5$ plus shipping

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • With something like this a gasket seal for instance if i cant find the relevant information i would use instinct to decide what fits and works best. You have the original gasket ( well maybe its original or hopefully it is )so its fairly easy to determine what material to use. Shape , for that i would look at the gasket seatings, are there grooves or recesses in either the case back or case or both, what shape are the grooves, flat or round etc, how does the gasket sit and behave in those seatings. Next thickness,that is going to be a bit of a guess, especially if the gasket is a soft one that has been heavily compressed over time. This is where a selection is going to come in handy, personally i would be choosing one that is giving me the feel of compression as its coming into contact with both of the mating surfaces. But not so much that the gasket is going to squash out and become distorted, again this is guesswork and feel is required with the allowance of compression over time, something you may want to check after six months. This part is a little moot as without a pressure test, good water resistance is not assured so the watch needs to treated as such and not as if it were a new diving watch ( not that i would treat any new diving watch as if were ). What you want to expect from your efforts is a little accidental rain catch, if you want more water resistance guarantee then a professional gasket replacement and pressure test is what you should be seeking which will be more than the value of this watch. Coincidentally i have the same watch, been searching for a stem for it for a while now. 
    • It might not be a hook it might be something like this. But still the mainspring is catching on something on the slip ring because it doesn't have its own outer slipping part like the modern ones. The image below came from some vintage Omega thing I'll have to see if I can find where that has gone to.documentation A different book has this          
    • I did not see a hook on the slip ring. I will check again tomorrow.
    • I think I'm having a confusion here? You would apply the breaking grease to the inside of the barrel then the slip ring would go inside. Then the mainspring goes in and it catches on the hook on the slip ring.
    • Thank you for the once again very thorough and informative reply. I'm sure at this point it's academic, but I'm always curious to know best practices. This then implies that If I'm planning to reuse the old mainspring (which I am), I should also reinstall the slip ring. I will do that and apply braking grease to the inside of the slip ring as if it were the barrel. This makes the most sense to me. Also, that bit about the center cannon pinion is very helpful. That wasn't in the tech sheet I have (attached) dated 1970. Omega 1001(1).pdf
×
×
  • Create New...