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Everything posted by tmilligan

  1. I don't know why the earlier movements seem to be prone to hairspring damage if the balance is left in the movement during ultrasonic cleaning. I posted the question to see if other people experienced the same phenomenon. Perhaps others have had a different experience.
  2. @watchweasol - thanks for the feedback! What is your opinion of using the "swish" method instead of an ultrasonic when servicing the older movements? Perhaps that would get the job done without necessitating the removal of the balance. But I'm not sure if it'll work as well. As you can see - I'm not a fan of tinkering with the balance if I can help it.
  3. Question for those who work on Vintage Timex watches: I've restored several Timex pieces from the late '60s to the late '70s. The technique I learned (from Internet posts and tutorials) say to simply loosen the dial-side balance pivot by unscrewing it 1/2 turn prior to cleaning the entire movement in an ultrasonic cleaner. This method contradicts the official Timex service manuals, which state that the balance should be removed, cleaned separately and reinstalled. Thus preventing the hairspring form being damaged in the ultrasonic cleaner. My experience is this: Leaving the balance in place (slightly loosened) is much easier and will work on the standard movements used in the '70s (M24/25, M32/33, M104, etc.) Attempting the same method on movements from the '50s and '60s (M22, M29, etc) will result in a kinked hairspring that is damn near impossible to un-kink. So my question is this: What do you experienced Timex restoration experts recommend? Leave the balance/hairspring in the movement for cleaning, or take it out to soak in a separate jar? Is the potential for hairspring damage greater when removing/reinstalling the balance - in comparison to leaving it in place? I've messed up a couple of vintage movements that I really wish I hadn't. I don't want to make those mistakes again. Thanks for any insights! -Todd
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