Omega 344 Part Identification

Discussion in 'Watch Repair' started by Paul Raposo, Jun 5, 2020.

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  1. Paul Raposo

    Paul Raposo Registered User

    Nov 4, 2005
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    I'm hoping to get the correct name for this Omega caliber 344 part. It's part of the bumper autowind and I want to call it a ratchet but I'm not sure that's what it is. It also appears to be missing a spring from the underside. Can I buy the spring or would I need to source a complete new part?

    DSCN4910.JPG DSCN4912.JPG
     
  2. Skutt50

    Skutt50 Registered User

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    #2 Skutt50, Jun 6, 2020
    Last edited: Jun 6, 2020
    Without the wheel, it is called "Pawl-bearing Yoke with stud and spring" and has omega number 330-1407

    I don't know about the spring.......

    Edit: Looked around with Google and it looks like a simple spring one could make by shaping a piece of raw spring material. My only concern is how it is attached. I can't realy tell from the pictures I found.....
     
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  3. Paul Raposo

    Paul Raposo Registered User

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    Thank you for the ID and part number Skutt50, very much appreciate it.

    The spring end goes on the post on the underside and there's a groove in the click that the other end sits inside.

    Unfortunately I don't have any wire thin enough to do the job.

    Here's a couple of pictures showing the spring.

    IMG_0823.jpg IMG_0824.jpg

    IMG_0823.jpg
     
  4. Chris Radek

    Chris Radek Registered User
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  5. Al J

    Al J Registered User

    Jul 21, 2009
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    All these parts are long discontinued. The last watch I had in that needed these parts, I had to cannibalize my own bumper for them...

    Donor watch is likely the best bet.
     
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  6. roughbarked

    roughbarked Registered User

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    I've got one of those somewhere. Trying to think. Sure it is still in the packet. Probably got a couple of old ones but they were probably worn out or I wouldn't have got them in bits.
     
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  7. Paul Raposo

    Paul Raposo Registered User

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    Thanks for those pics Chris, very helpful. Clearly at one point the spring was available on it's own.

    Thanks for your reply, Al. I was worried that would be the case but tried to stay optimistic. I'll give Perrin's a call on Monday but I'm sure it will be emotionally futile.

    There's always ebay but with the post the way it is right now it will be a while before I get the part.
     
  8. Paul Raposo

    Paul Raposo Registered User

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    The funny thing is I had a partial 344 movement but gave it to a friend a long while ago so he could finish his uncle's watch for his anniversary. I emailed him this morning but he has since passed on the reminder of the movement to another collector.
     
  9. Skutt50

    Skutt50 Registered User

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    I found a couple of old assortments with a number of different raw spring material (each some 5cm long) available on a local auction site. They come in very handy at times! Since you don't have this you could look for another spring from a spare part movement and re-shape. At least you would get it running again and can replace the spring at a later date, should you find the proper piece.
     
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  10. Chris Radek

    Chris Radek Registered User
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    Would a piece of stout hairspring work?
     
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  11. roughbarked

    roughbarked Registered User

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    #11 roughbarked, Jun 6, 2020
    Last edited: Jun 6, 2020
    Well there you go. I have a packet full and unopened of the spring in question.

    .. and I really haven't been able to look hard because I am neck deep in boxes and boxes of all this stuff at the moment. Don't even know who Martha is or whether she is even related to Arthur.

    P6076679.JPG

    I am sure given time to look, I'll also find one or three of the transmission wheels.
     
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  12. Skutt50

    Skutt50 Registered User

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    I was thinking more in the terms of a click spring.
     
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  13. roughbarked

    roughbarked Registered User

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    I haven't counted them. I had a quick look found one box that might have Omega bits and there it was. There could be ten or a dozen of them in that packet.
     
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  14. Paul Raposo

    Paul Raposo Registered User

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    The hole in the post that holds the spring is narrow so I think a length of hairspring would work and still have room for a taper pin. I don't have a spring I can sacrifice to try it though.

    Do the springs come with taper pins or just the springs alone?
     
  15. roughbarked

    roughbarked Registered User

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    The springs in the packet are all pinned to a stud.

    View attachment 594132

    P6086682.JPG
     
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  16. Paul Raposo

    Paul Raposo Registered User

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    Thanks for the update roughbarked. This makes sense since trying to pin that spring to the stud would be all kinds of infuriating.
     
  17. roughbarked

    roughbarked Registered User

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    Well yes. I have to admit that hand filing the tapered pins would be the extra layers of infuriating.
     
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