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So the stem is snapped and will need replacing but luckily there's enough left in the crown to unscrew without a problem. Will need to see photos of the movement to identify it. -
That is really concerning if there's chinese knockoffs that close floating around. iv'e seen speculation but never any proof beyond some VERY obvious knockoffs that were clearly copying the design of the nh movemetns but didn't even attempt to copy them cosmetically. -
Doing the #6 arbor #7 winder mismatch absolutely is necessary as far as i'm concerned. This washer trick however is pretty damn genius! I actually had an idea for a homemade tool made out of sheet that could act as a retainer for these springs while you work the arbor out of the center coil.
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By Embezelled · Posted
Sorry, beginner error. The inside is marked 3ADJ 59079. That's all I can see. I assume the caseback has the s/n, the only number there is 1307085. The 2.3 mm I mentioned is as measured from the underside of the cap to the end of the thread. So about 40% of that is the unthreaded part. -
Yes, the stud holder and regulator are indeed positioned incorrectly relative to each other. If you have more questions about how this movement can be disassembled, assembled and adjusted, my service walkthrough might be helpful (link below). As a beginner, you're facing some fairly advanced challenges. I’d recommend getting a donor movement for parts. For instance, refitting and adjusting the depth of the pallet stones (if you still have them?) is a delicate task that’s best attempted once you’ve developed steady hands and more experience. As you continue working on the movement, you may run into additional issues that are easier to solve if you have spare parts on hand. Anything you don’t use now can be saved for future projects.
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