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Posted

Hello Everyone! hope everyone having a nice new years!

It's been pretty busy since summer. Mostly standard overhauls and custom crystal cuttings. Nothing too exciting.

Here one that I'm working on now. Seiko 6020A came in with a battery that leaked and was sitting in there for ever. Also a loose ruby. I haven't really encounter a jewel coming out before. Couldn't really find much online regarding resetting stones. I do have a full  staking set, and also jewellers stone setting tools. Was thinking maybe do it like a channel set stone where you would just compress each side of the metal to try and tighten the stone. Still trying to think of other ways. I think i read on the forums somewhere that they used some glue? that didn't seem like the best option.

If anyone have some insight and able to share your experience with me that would be greatly appreciate.

I've looked into a replacement movement from a few supplier but non have it in stock anymore. and non offer and option for a modern replacement.

Still waiting to hear from Seiko so hoping they will have a replacement movement for it.

 

Mkay.

 

Seiko 6020a.jpg

Posted

ya its on the main plate, I will have to look over all my watch stuff this weekend also. Was more hoping to reset the ruby. Or have a compatible available before I dig around for parts.

Posted

If you can beg, buy or borrow a jewelling press then the right answer to this is to fit a jewel with same hole size but the next size up external diameter.  Jewlling presses come with specially sized reamers to ensure you open up the hole in the plate perpendicular with the correct interference fit.

Mark explains here how to do all this...

 

Posted

Anyone know of a source for ordering hole jewels? or will i need to try my luck and start salvaging them old watches.

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    • Yes, the specific old tools do exist, but may be having one is not needed as they are not cheap, and also You will be able to do without it well enough. My advice will be to use regular depthing tool and adjust it for the exact distance between pallet fork and escape wheel bearings from the watch. Then remove the shellac from the pallet that now doesn't pass the ew teeth and move this pallet in. Then put the pallet fork and ew on the depthing tool and check how they lock. They should not lock when the pallet is in, but You will little by little move the pallet out and locking will appear. Then move just an idea out for reliable work and apply shellac, then check if things are still the same. You have to observe where the teeth fall on the pallets - it must be just a little below the edge between impulse and rest planes. Then You must check how everything behaves in the movement This Potence tool is so ingenious, but actually, the traditional way to do the things is much more simple. Arrange the parts not on the pillar plate, but on the cover plate. Only the central wheel will remain on the pillar plate, secured by the cannon pinion.
    • There is a tool that was made for setting up and adjusting escapements of full plate watches.  There were two styles, the picture below shows both of them.  The lower tool held a movement plate and the vertical pointed rods were adjusted to hold the unsupported pivots of the lever and escape wheel.  There was also a version of this tool that had 3 adjustable safety centres so that the balance pivot could be supported by the tool :  The other version I’m aware of is the Boynton’s Escapement Matching and Examining Tool came as a set of two or three clamps that gripped the watch plate and held the safety centres for the pivots : These do turn up on eBay from time to time.  For some escapement work, you can set up the parts in a regular depthing tool, with the centres set according to the distance between the corresponding pivot holes on the movement.  I hope this helps, Mark
    • Once you are aware of the problem, you can adjust as necessary. I have a couple of the Omega 10xx, and they are not my favourites. They seem a bit flimsy and not as solid as previous generation Omega. But I think that's true of a lot of movements from the 70-80s. For me, the 50-60s is the peak in watch movements, where the design criteria was quality, not saving the last penny.
    • Thanks for this post MikePilk, I just came across a similar problem with an Omega 1022.  The problem I had was the seconds pinion spring was bent out of shape and did not even engage with the wheel properly, so the seconds hand was not moving at all. (no power loss though :) I removed the automatic module so I could access the spring and work on it. Once I bent it back close to the right shape, I experienced the same problem you reported about power loss.  Many tweaks later, and the seconds hand is moving properly again, with amplitude back to good numbers again. Cheers
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