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Posted (edited)

No matter where I search I can't find the part number for the 2 extra jewels in the Seiko 7S36. They come integrating a small bridge that is held in place with a single screw in the main plate. All service data I find/have are for the 7S26, identical but without this bridge.

 

Does anyone know this jeweled bridge part number? Thank you in advance.

 

Robert

Edited by bobm12
Posted

Thank you Don, much appreciated, but no, that's the same pdf I have. They forgot to reference the extra jewels on the bottom of the plate. I'm still looking but no luck.

Posted

Hmmm... Do they give part numbers for jewels? I usually order generic jewels (Seitz) by size. I could be wrong ;)

Posted

That's the thing with this movement, those two jewels I'm looking for are what makes this movement a '36 rather than a '26 (bumps up the number of jewels by 2) and they come in a tiny bridge, both jewels one next to the other. I believe they sit under the center and the third wheels. Most people say they are useless but in my mind even though they might be, if the watch sais 23 jewels it should have them...and it is engraved in the oscillating weight!

Posted

I meant escape wheel and 3rd wheel and pinion in the above post. This small bridge comes complete with the jewels.

Posted

Finally, pay dirt! I modified a response from another forum and included their schematics for others here that may run into the same problem I had:

 

7S36 difference.pdf

 

Mark, if this is not OK please, please remove it but I don't think I'm breaking any rule or copyright.

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