$ Omega crystal removal/replacement advice

PWR_family

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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
 

roughbarked

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Dec 2, 2016
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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.
 
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PWR_family

Registered User
Jun 5, 2016
54
14
8
West Chester, PA
Country
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.

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
 

roughbarked

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Dec 2, 2016
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Western NSW or just this side of the black stump.
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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.
 

Chris Radek

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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.)
 
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