Who can install a crystal on my 6138-7000? - Page 2 - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
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Old 04-08-2015, 05:23 PM   #26 (permalink)
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I also checked the casing guide..looks good. Caution when you remove the crystal from the inside that you don't damage the chapter ring if there is one present . The pic from the guide shows a crystal press to install the crystal . You could use one of the nylon or plastic dies to fit inside the case on the crystal...careful of the chapter ring..., to tap it out . The Watch Repair Channel on Youtube shows this procedure .
If you use the press to install the crystal be aware that the bottom die doesn't put pressure on the case tubes , I made that error ONCE.

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Old 04-09-2015, 04:55 AM   #27 (permalink)
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If you take out the movement on this one be very careful...6138's are prone to getting a bit messed up if you remove/reinsert the stem incorrectly. It is not a problem on the 6139s and is due to the added hand wind function of the 6138.
Make sure the stem is fully home when you press the detent button to remove the stem....light pressure on it but enough that it lets you remove the stem without force (becuase that would likely change the keyless works to not be 'home').

When you reinsert the stem you need to make sure you do so carefully...if it is feeling a little 'springy' STOP, pull the stem back out and try again at a slightly different angle. If you feel it has gone in up to a 'hard stop'....push it home and hope.

^ Is what I do anyhow.

Good luck. Buy a crystal press and you will have all you need to change your crystal as described by the other guys here.
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Old 04-13-2015, 08:14 PM   #28 (permalink)
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You'll need a set up like mine:
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Old 04-13-2015, 08:17 PM   #29 (permalink)
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It seems that watch crystals are fixed to the watch case by means of friction.

No glue is involved.

Quick question: say if the case has a slight deformity, will it actually cause micro gaps between the case and the crystal thereby compromising the water tightness of the watch?
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Old 09-28-2019, 01:14 PM   #30 (permalink)
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Default Case Exploded Diagram?

I find myself 5 years later in the same position of restoring one of these. The images for the case diagram seem to have gone stale.

Any chance these images are still available somewhere I can get to them?

Thank you.
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Old 09-29-2019, 06:59 AM   #31 (permalink)
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Quote:
Originally Posted by wiegleyj View Post
I find myself 5 years later in the same position of restoring one of these. The images for the case diagram seem to have gone stale.

Any chance these images are still available somewhere I can get to them?

Thank you.
The casing guide is available in the technical section (here’s a direct link)

Whist the 6138-7000 is not shown exactly, it’s a pretty standard tension ring crystal set up (A1, screw 1) which pops in with a crystal press if I remember correctly... did mine years ago.

Here’s mine...
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Last edited by axb; 09-29-2019 at 07:10 AM.
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