8229 Crystal retaining system. - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
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Old 01-23-2018, 01:52 AM   #1 (permalink)
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Default 8229 Crystal retaining system.

Hi All,

I just got this nice 8229-8000 SilverWave. I really like the style and the dial.
The crystal was pretty scratched up and in trying to remove it I smashed it.
No problem as I intended to replace it anyway. But I cant work out how to separate the 2 piece crystal holder. Im not sure if its a press fit or if its threaded.
https://s17.postimg.org/ukard0mq7/20180123_191600.jpg
https://s17.postimg.org/8xvqvytan/20180123_191608.jpg
https://s17.postimg.org/8xvqvz8q7/20180123_191628.jpg
https://s17.postimg.org/t596oadxb/20180123_191632.jpg
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Old 01-23-2018, 02:10 AM   #2 (permalink)
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The crystal fixing ring is friction fit into the bezel. The crystal will sit inside the bezel tightly against a gasket that's in a groove around the inside circumference of the bezel. The crystal fixing ring is then friction fit and pressed into the bezel and is what the crystal is sandwiched between. You would need to find a die that allows you to press the fixing ring out of the bezel. It can be hard to do as there isn't much to grip onto. I think that's the system. I don't know what reference the "type" of crystal setting it is but it will be in that guide somewhere that shows its assembly. It's the same basically as the sports 100 7546 divers in my experience. I'm fairly sure that's what I'm looking at in your pictures but it's difficult to see.






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Old 01-23-2018, 02:23 AM   #3 (permalink)
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I believe it's similar to this.
https://www.thewatchsite.com/34-watch...-assembly.html
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Old 01-23-2018, 03:08 AM   #4 (permalink)
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Thanks Guy.
That is what I thought but I didn't want to try and press it out if it was threaded.

I'll spin up a die on the lathe when I get a chance.

Next question, What is the crystal size? (looks like 300WB0GA00/same as the linked post) and gasket code ( DJ2990B04??/same again)

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Old 01-23-2018, 03:45 AM   #5 (permalink)
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I'd say that sounds right. I know the 8229-6020 takes a slightly smaller 295W16GA00 of 295W14GA, possibly.

Yours is listed as the same as the 7546, so if you find one then give it a shot. A Sternkreuz version is usable but doesn't quite have the same bevel. I actually can't remember if I utilised one with success...but a Sternkreuz list of 30mm crystals with a shallow bevel and around 1.5mm thick is probably workable. You'd have to check as I'm guessing.

Not sure if the crystals are available. I had a few at one point but only have one spare. I wouldn't worry about the crystal gasket if it hasn't been ripped or frayed, let alone an original. You'd need a D shaped, or I'd imagine O shipped will be fine, 29.9mm and I'd say around 1mm thick if that? Try and see if the original crystal gasket is serviceable I'd say.
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Old 01-23-2018, 08:50 PM   #6 (permalink)
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Well, I spun up a die on the lathe and pressed the two parts apart.
I has a sapphire of the same diameter but thinner that I managed to use with the original gasket and put it all back together.
Job dode. Thanks for your help!

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Old 01-23-2018, 09:19 PM   #7 (permalink)
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Lookin good!
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