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Hello everyone! Finally received center second replacement. It is this lover hand on my picture below. Now I see that I have to shape it to meet the shape of original hand (the top one). I have couple of ideas how to do it and since I’ve never done this, think that it would be smart to ask community, what you guys do. Reason why I need to do this is to avoid hand scratching crystal and to have better reading off chrono. So I wonder if any of you have experience to share with this? Regards Jakub -
Well I may have spoken too soon, that's a very large crown. This one looks good for your watch, except that it's 2mm smaller than your old crown, and doesn't have the outer flange so it will sit above that pedestal. If you can live with that, prob your best bet. 8 x Ø6.00mm x 2.00, SS C43456 £2.65 (CousinsUK) I didn't see anything more suitable on Esslinger. If I'm looking at that correctly, the indent on the long crown tube is where a 2nd o-ring (double o-ring) would fit. You can get o-rings that size, if you do manage to alum out the broken stem. Your old one does look a bit chewed up now, but possibly not to the point that you can use it as-is or correct the damage with some sanding and polishing. Since the stem was in there, you haven't crushed the internally-threaded tube. Alternate crowns might be available, the big diameters I saw were all tap 0.9mm, or much smaller diameter crowns, maxing out at 4.5mm. You can get stem extenders that change the tap size, it might open up a few more crowns options, but not really anything like your crown. If I'm reading the photos correctly, it's an unusual crown in that it has has a 5.6mm ID flange that sits over the 5.3OD pedestal, a bit like a screw down crown without threads. You probably won't find that outside of citizen. You could try this parts search using the case number, I know there's a bunch of numbers on citizen casebacks so one of them might turn up something. I tried your case number with no luck, and a similar number S009090 turned up "restricted by manufacturer" https://www.cousinsuk.com/category/filter/citizen-case-parts The donor movement might be an option. Someone, somewhere, has a broken one. You might try going with a less-suitable crown that fits on your new stem for now, and work on the old crown with alum. Or take the new stem and old crown to a shop with the skills that can sort it out. I'm not against shopping out a tricky job, might be a lot less than the new watch or Citizen part option. Good luck! -
By HectorLooi · Posted
That's really strange. Solder joints usually fail when they are subjected to movement, strain or thermocycling. This joint shouldn't have experienced any of that. Could you get a really high magnification photo of the joint? -
I noticed that the parts list I have for the 410 of course does not have the balance wheel. Refers you to the base calibers 3019 PHF. Then the balance wheel is number 721 but? One of the problems with the Swiss numbering system is 721 is a balance wheel. But that part number does not tell us which balance wheel. For instance I'm looking at AS 1940 Its balance wheel is 721. So basically any older tech sheet for just about any watch is going to Have the balance wheel 721. Which is why you needed additional numbers like the company name and the model number. Later the watch companies got smart and they have unique numbers. To give you an example of the 721 problem I went the best fit online and just looking for Zenith parts a scroll down to the balance wheels which of course are 721 a snipped out a section just see you can see all the balance wheels are 721.we do get the best fit part number for your balance wheel plus perhaps a factory number. The numbers that were interested in our ZEN 3019 PHC 721/1933 721/ZEN 3019. The first is the base caliber the second is the best fit number. The third is the factory number. Then I'm attaching another image the interchangeability list which is interesting because basically there's almost none. But I'm guessing that's because all the variations in the watch basically still use this as the base caliber. As opposed to listing all or parts separately. Not sure if that makes any sense but at least to get a best fit number. Which is helpful for the US material houses where they might actually have one. Although knowing the number now is one material house it looks like you can scratch off the list and the balance wheel was pricey if they did have it. Another option I haven't even looked for that is what about replacing the balance staff that would be considerably cheaper then the balance wheel itself? http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Zenith_410 -
This is what I always used for French carriage clock cases the clear one. Paint it on with a very fine artists brush, it dries very quick. https://www.cousinsuk.com/product/lacquers-rapid-drying
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Only just getting into this hobby, bought a tatty Montine watch to practice on, it has an AS5203 movement.
I have cleaned it, re-oiled as re-assembled (video' the disassembly so I could confirm where everything went), the watch is running fine although the setting lever spring is broken at the base.
My problem is I cannot set the hands although I can alter date wheel. When I bought it the hands could be set fine.
I've redone the work again with the same result, I've obviously got something wrong but cannot figure out what.
With the dial off you can see the wheels trying to turn but they seem to be fighting the train of wheels.
Any ideas please!
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