Greiner Motormikrophon ML61 & Chronografic Super
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Now that I think about it, I can probably just file down the pin carefully to the point where it fits. Is that too much of a hack? -
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You asked for an introduction. I have a Timex Marlin with a cracked crystal. (already said all this--sorry for the repeat in the introduction) I bought a Ling Hui universal crystal puller that was not universal. Can I find a larger puller or is there a different solution. RickG -
I have a Timex Marlin with a cracked crystal. I purchased a Ling Hui "universal" crystal lift/puller on eBay. I didn't know there was some type of size limit. The jaws are too small to fit around the watch crystal. Returning the item is not worth the hassle and complexity. Are there larger crystal pullers? They made it seem soooo simple. Rick
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Moebius 9010. A small drop on each end cap jewel (top and bottom)…enough to cover at least half the jewel, but not all the way to the edge. I was conservative. I like this analogy. And yes, it’s imperfect, because surgeons don’t start with live people. 😂 It’s definitely one of the things I learned with this watch, where I’d fix one issue, but then introduce 1-2 others, often not necessarily getting at the root cause of the “illness.” Well, this watch wasn’t totally destroyed…Unfortunately, I wasn’t able to do enough up-front diagnosis before I started pulling everything apart. This was one major lesson learned to me, but tbh, I don’t think I would have learned it had I not pulled everything apart and seen the interactions of all the different systems (just inside the balance assembly itself!). I have a few other Hamilton 974s that I’ll be able to work on more thoughtfully. I definitely heard your advice, and I think a few others echoed it, but I’m fairly certain I would have introduced more problems by attempting that fix. I don’t have the necessary skill or tools to (1) bend the cock and (2) assess exactly how much it has been bent. I can’t machine a brass plate to attach the cock while bending, I can’t measure the amount of deflection I’ve introduced. And it’s the kind of thing where botching it seemed like it would be irreversible. I’ll attempt to look at the hairspring to see if it’s touching anywhere. The central challenge is that I don’t have a reference point. I don’t have that for end shake or for anything else. I could compare to my ST36, but that seems like an apples-oranges comparison to me (new movement v. 100+ years old). That’s one of the main challenges for me when learning a lot of this stuff – you create reference points yourself! The next thing I was thinking of getting was a JKA Feintaster bench micrometer, tbh. After watching Alex Hamilton measure staffs and pivots, it seemed like it would be a good purchase. They’re just expensive. I’ll need to sell a watch or two first. 🙂 A lathe seems like something where I need to collect more experience before I pick one up. Perhaps you convince me otherwise. In the category of ideas good in theory, but not in practice, I swapped the balance wheel onto the balance cock from my donor, only to discover that the balance cock doesn’t quite fit into the baseplate. The pin on the cock that aligns with the baseplate is either slightly too large or displaced relative to the hole in the baseplate (I suspect the latter). I actually took off the balance wheel and double-checked by trying to screw down the balance cock by itself, just in case there was an alignment issue with the pivot, but no…The picture shows the sizable gap that exists even with the screw for the cock tightened all the way. This is probably one of those circumstances where I could use a lathe to reduce the diameter of the pin, right @JohnR725? 🙂
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