Jump to content

Omega T 12.6 (1930s) NON-shock setting

Recommended Posts

Hello friends, 

I've just started a service of a Omega 12.6 / T12.6 movement of a tiny ladies tank watch. 

As it's from the 1930s, it doesn't have a shock system. 

I was expecting two tiny screws from the underside of the balance cock. However, I find this (for me) unusual screw-in-disc. It doesn't look too complicated, but does anyone have experience with it and any advice for me? Or is it really tricky and I should NOT disassemble it (and clean in ultrasonic as a whole)? 

Thanks and best wishes for the weekend ahead. 


Link to comment
Share on other sites

They are not difficult to take apart. Just put a screwdriver blade in the slot, and turn, until the 3 cut-outs line up with the 3 prongly bits. 

Clean in ultrasonic, and assembly is just the reverse. Assemble before oiling to prevent an oily mess. Put a small amount of oil in the cup of the jewel, poke a fine wire (I use an old sharpened oiler) through to the cap jewel, and capillary action will take it through. Repeat until about the oil disk covers about 1/2 the cap jewel.

BTW I avoid taking out the stud screws - they can be fiddly to get back in. I just tighten them before ultrasonic cleaning.

Link to comment
Share on other sites

Thanks @mikepilk

I disassembled it earlier this afternoon (when I have a time slot to work on a watch, I don't delay 😉). I did exactly as you said. 

It's actually a pretty nice way of securing the cap jewels. Seems much less fiddly than the usual two tiny screws. 

I usually, despite having heard of the oiling method you describe, I follow the approach that @Markuses in this video: 


Certainly, high risk of oil baths and doing over-and-over until getting it right. But I'm improving. 

Maybe I should try your approach this time. 


Also thanks regarding the tip about the stud screw. Indeed, I do that too. I didn't do it once and learnt my lesson 😅


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.

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.

  • Create New...