$ Omega crystal removal/replacement advice

Discussion in 'Wrist Watches' started by PWR_family, Aug 20, 2020.

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  1. PWR_family

    PWR_family Registered User

    Jun 5, 2016
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    West Chester, PA
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    I have two cases for an Omega 198.002 [I think they call it "THE CONE"] with terribly scratched crystals.

    I was going to attempt to remove and replace the crystal with a imitation part as Omega crystals seem impossible to find

    Wondering what tools are required to R/R the glass and and hints you might provide

    Thanks in advance

    Steve
     
  2. roughbarked

    roughbarked Registered User

    Dec 2, 2016
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    #2 roughbarked, Aug 20, 2020
    Last edited: Aug 20, 2020
    These crystals push through with the input of air pressure through the pipe after you pull the male female stem apart and remove the crown. Otherwise, push the inner stem part back into the winding position and using the correct press dies, push the whole case back, movement dial and glass out through the front. I'd need pictures to be sure. Some of these were mounted on a case ring attached to the band.
     
  3. PWR_family

    PWR_family Registered User

    Jun 5, 2016
    54
    14
    8
    Male
    Retired
    West Chester, PA
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    I think you are confusing the cone watch with the dynamic

    The cone has a 1 piece stem and a screw off back

    The air pressure process you describe is one I know for dynamic not cone

    Steve
     
  4. roughbarked

    roughbarked Registered User

    Dec 2, 2016
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    OK. Then screw the back off remove the stem then push the crystal out from the inside. It works for the dynamic to push the whole movement through. Otherwise take the movement out and put a bit of sticky tape across the glass and using a press push it out from the back.
     
  5. Chris Radek

    Chris Radek Registered User
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    Apr 13, 2014
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    I just finished up a 198.0004 for a customer. Like yours, the crystal is just flat mineral glass. I replaced it with a sapphire equivalent. These are easy to source, you don't need Omega branded glass. Just press it out and measure the thickness and diameter.

    (However I have had good luck getting genuine Omega crystals from my parts house, they're just insanely expensive. Some of the 198.xxx cases definitely need the particular crystal, because they have special tension rings.)
     
  6. Chris Radek

    Chris Radek Registered User
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    Apr 13, 2014
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    Wait do you mean 198.012? 198.002 is not a cone. Maybe you should post some photos?
     
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  7. PWR_family

    PWR_family Registered User

    Jun 5, 2016
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    14
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    West Chester, PA
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    sure -- see attached....I was confused by the air pressure suggestion -- that would not be for a cone but would be true for the dynamic....

    The crystal did come out with a small crystal press.

    IMG_6692.JPG
     
  8. Chris Radek

    Chris Radek Registered User
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    Apr 13, 2014
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    Yes I guessed right, it was 012. Just measure diameter and thickness and order whatever type of glass you want! No problem.
     
  9. roughbarked

    roughbarked Registered User

    Dec 2, 2016
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    Yes and the cost difference between ordinal mineral crystal and sapphire crystals these days is minimal by comparison to the length of scratch free time the sapphire gives.
     

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