6138 3002 crystal removal - Seiko & Citizen Watch Forum – Japanese Watch Reviews, Discussion & Trading
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Old 06-10-2018, 08:12 AM   #1 (permalink)
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Default 6138 3002 crystal removal

Hello everyone,

Does anyone know how to safely remove this? I meant from the metal ring. I tried everything including the oven / heating method, but unfortunately my attempts were unsuccessful. That thing is not budging. It is glued on there like it's no one's business. Any and all help is greatly appreciated.


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Old 06-10-2018, 08:12 AM   #2 (permalink)
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Hello everyone,

Does anyone know how to safely remove this? I meant from the metal ring. I tried everything including the oven / heating method, but unfortunately my attempts were unsuccessful. That thing is not budging. It is glued on there like it's no one's business. Any and all help is greatly appreciated.


Thanks in advance.







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Old 06-10-2018, 08:35 AM   #3 (permalink)
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Quote:
Originally Posted by TheBloke View Post
Hello everyone,

Does anyone know how to safely remove this? I meant from the metal ring. I tried everything including the oven / heating method, but unfortunately my attempts were unsuccessful. That thing is not budging. It is glued on there like it's no one's business. Any and all help is greatly appreciated.


Thanks in advance.







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It's meant to be glued on. Google www.adventuresinamateurwatchfettling. There's a recent entry there about separating a crystal from its ring on a couple of king Seikos recently. Might give you some ideas.


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Old 06-10-2018, 08:57 AM   #4 (permalink)
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I removed it with a small hammer... Take care to do it in a container - you don't want glass pieces everywhere.
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Old 06-10-2018, 09:07 AM   #5 (permalink)
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It's meant to be glued on. Google www.adventuresinamateurwatchfettling. There's a recent entry there about separating a crystal from its ring on a couple of king Seikos recently. Might give you some ideas.


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Thanks for that! That is a wealth of information. Time to invest in ultrasonic cleaner. I have the crystal, glue and UV lamp. Btw- It is incredibly difficult to find the correct crystal for this model. Especially the same exact profile like the original. I bought a crystal from Seikosis off eBay. Hope that fits. Thanks again.


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Old 06-10-2018, 09:11 AM   #6 (permalink)
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I removed it with a small hammer... Take care to do it in a container - you don't want glass pieces everywhere.


You hammered it? That thing is caked on there. I'm afraid of damaging the metal ring.. Will try that method. Thanks for your help.


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Old 06-10-2018, 10:54 AM   #7 (permalink)
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Bit of acetone will do it I imagine?
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Old 06-10-2018, 11:37 AM   #8 (permalink)
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Bit of acetone will do it I imagine?


Thanks, Guy. It did loosen it enough to pop it out of the housing. But what type of method do you recommend for removing the dried up glue. Oven? If so what temperature?


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Old 06-10-2018, 11:56 AM   #9 (permalink)
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Well I would pick at it with some sharpened pegwood but it would need soaking in some thinner of some sort. Again sit it in some acetone and then try and pull it away with the pegwood or toothpick etc? Oven will just make it sticky...and you might find it burns into the metal and causes a stain.

Try a thinner and then pick at it and it may take a bit of time.. aslong as there are no painted parts or plastic parts that would be my method I guess.
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Old 06-10-2018, 12:06 PM   #10 (permalink)
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acetone and a heat gun.
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Old 06-10-2018, 04:59 PM   #11 (permalink)
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Well I would pick at it with some sharpened pegwood but it would need soaking in some thinner of some sort. Again sit it in some acetone and then try and pull it away with the pegwood or toothpick etc? Oven will just make it sticky...and you might find it burns into the metal and causes a stain.

Try a thinner and then pick at it and it may take a bit of time.. aslong as there are no painted parts or plastic parts that would be my method I guess.


Thanks, Guy! What do you think? It's not perfect as I am far cry from being an expert.


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Old 06-10-2018, 04:59 PM   #12 (permalink)
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Thanks, Guy! What do you think? It's not perfect as I am far cry from being an expert.


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Thank you everyone for your help and suggestions. I appreciate them all.




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Old 06-10-2018, 05:03 PM   #13 (permalink)
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Oh and BTW - Sternkreuz does an exact copy (of the crystal, not the ring). Chances are that you bought one of these at a multiple of what they cost at cousinsuk.com

XMF 365.900 - see here: https://www.cousinsuk.com/PDF/produc...undSpecial.pdf
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Old 06-10-2018, 05:07 PM   #14 (permalink)
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Oh and BTW - Sternkreuz does an exact copy (of the crystal, not the ring). Chances are that you bought one of these at a multiple of what they cost at cousinsuk.com

XMF 365.900 - see here: https://www.cousinsuk.com/PDF/produc...undSpecial.pdf


Thanks! How do you buy from them? Their website?


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Old 06-10-2018, 05:24 PM   #15 (permalink)
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Quote:
Originally Posted by Mr.Jones View Post
Oh and BTW - Sternkreuz does an exact copy (of the crystal, not the ring). Chances are that you bought one of these at a multiple of what they cost at cousinsuk.com

XMF 365.900 - see here: https://www.cousinsuk.com/PDF/produc...undSpecial.pdf


Got it! Just checked them out. Will definitely look into what they have. Thank you, Mr. Jones!


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Old 06-10-2018, 06:26 PM   #16 (permalink)
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Thanks, Guy! What do you think? It's not perfect as I am far cry from being an expert.


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I think that looks bloody good! Lovely watch..I want one. And a good job done I'd say.
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Old 06-25-2018, 05:37 PM   #17 (permalink)
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I think that looks bloody good! Lovely watch..I want one. And a good job done I'd say.


Many thanks, GuyJ! Probably the most challenging crystal change I've done thus far. Got the Ultrasonic cleaner the other day. It has heating option so. Next time it will be a bit easier.


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Old 03-23-2019, 07:57 PM   #18 (permalink)
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Can dropping it Ultrasonic do the trick? Doesn’t make a difference between ammoniated vs non-ammoniated correct? Last time it took quite a bit of effort. I’m thinking if I can use an Ultrasonic, it would be a lifesaver.


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Old 03-23-2019, 11:28 PM   #19 (permalink)
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Can dropping it Ultrasonic do the trick? Doesn’t make a difference between ammoniated vs non-ammoniated correct? Last time it took quite a bit of effort. I’m thinking if I can use an Ultrasonic, it would be a lifesaver.


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People i personally know use a heat gun. Just be careful handling the ring + glass as it will be very hot.
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Old 05-14-2019, 03:43 AM   #20 (permalink)
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I soak these crystals in the ultrasonic cleaner for a couple of days, then clean 5 times. That softens the glue a lot and I can remove the residuals with a sharp screwdriver, paying attention to not scratch the metal ring. Works a charm! Pegwood or toothpicks are too soft to do the job.
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Old 05-14-2019, 10:26 AM   #21 (permalink)
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Heat gun will soften the glue but it will re-harden when it cools. You have less than 10 seconds working time before it hardens. Multiple heating sessions will get the job done.
Here's an old post where the process is detailed:
https://www.thewatchsite.com/21-japa...26-7110-a.html
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Old 05-14-2019, 10:52 AM   #22 (permalink)
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Thanks, everyone! Heat gun works perfectly. Moving it around the ring, not too close. Then bust out the oven mitts and push the ring till crystal separates. Then soak the ring in ultrasonic cleaner and clean it couple of times for 15 - 20 minutes sessions. At this point the glue has loosen its deathly grip, and use a toothpick or chopsticks gently to remove the access glue from the ring. Then one last clean up to remove everything, dry and its crystal bonding time. Very first one I did I managed to put hair like scratches on the ring. Gutted to say the least. At that time I lacked patience and proper tools to pull it of. But now, it’s walk in a park!




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