Seiko 7009-8069 Questions

Thread: Seiko 7009-8069 Questions

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  1. #1
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    Seiko 7009-8069 Questions

    Being a Seikoholic, I was happy to inherit a 7009-8069 from my family.

    Where can I find the specs for a replacement crystal? Can anyone share a link to the manual for the 7009 movement? I’ve had plenty of Seiko autos, but never this particular movement.






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  2. #2
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    Re: Seiko 7009-8069 Questions

    You can look up the crystal part number from Jules Borel:

    Got to cgi.julesborel.com and search for SEK_CS^7009-8069

    The Seiko replacement crystal part number is: 310T49ANS0

    This is a common Seiko that uses an acrylic crystal, so you should be able to replace it using a crystal "claw" tool.

  3. #3
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    Seiko 7009-8069 Questions

    Thanks for the help.

    I have another question though. I was looking to acquire the part from somewhere other than flea bay, and Otto Frei lists three part numbers for the 7009-8069 crystal:
    -310T40ANG
    -310T40ANS
    -310T49ANS

    Is the only difference the tension ring? Does my watch require the gold ring?

    www.ofrei.com/page_169.html




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    SKX009J / SKX007K / SKX171 / Marathon T-SAR / G-Shock 7900B

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  5. #4
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    Re: Seiko 7009-8069 Questions

    Sometimes the Seiko crystal tension ring is designed to be fitted into the specific case (in this case the ref. number 8069). But I assume you can also just friction fit a generic crystal of the exact diameter.

    Best is to get the exact Seiko part or else a known part that's listed as an alternative.

    Both Jules Borel (US) and Cousins (UK) list the Sternkreuz XAC 311.652 as an alternative. You might want to check those out. Or else, give Otto Frei a call and see if they can give you more detailed info on the part on their site.

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