Seiko 5 SNKL23 NH36A Movement Swap - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
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Old 08-06-2018, 09:45 AM   #1 (permalink)
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Default Seiko 5 SNKL23 NH36A Movement Swap

I am planning to swap my 7S26C movement for the NH36A because it has hand winding.
I saw some videos of people swapping their 7S26C movement on the SNK809 with the NH36A.
So, I was wondering if the NH36A would fit on the SNKL23 and will the crown be detachable from the stem to be put on the NH36 stem.
Also, would the Black date wheel of the 7S26 movement fit the NH36 movement? Having a white date wheel would be a bummer.
Have anyone done this mod?
I would love to see some pictures as well.

Last edited by samuuel_03; 08-06-2018 at 09:48 AM.
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Old 08-06-2018, 11:17 AM   #2 (permalink)
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NH36 will work fine. The day/date wheels can be swapped from the original 7s26 movement to the new NH36. I have no idea if the crown on your original watch is a single unit with the stem, or if the stem threads in - you'll just have to remove it and see. The dial/movement spacing ring may be a different size - someone else may confirm, but I think that the dial spacer on divers is wider than the dial spacer for dress watches. Either way, I suspect you could use the dial spacer from your 7s26 on the new NH36 if the one that comes on the NH36 is too wide.
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Old 08-07-2018, 05:04 AM   #3 (permalink)
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Thanks for the good info.
I'll try to remove the stem from the crown.
Thanks again.
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Old 08-07-2018, 12:33 PM   #4 (permalink)
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No problem. Remember to please report back with how it turns out. :-)
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Old 08-08-2018, 03:33 AM   #5 (permalink)
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Update : I have looked at official parts list of the NH36A Movement and the 7S26C movement and it seems like the Date wheel part name is the same.
This confirms that I can fit my black date wheel from the 7S26C to the NH36A.
But, I have yet to confirm that the stem and crown is a 2 piece.
I will have to try this myself.
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Old 08-08-2018, 05:21 PM   #6 (permalink)
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a bit of a tangent...

how would one take a watch movement, or watch case, and locate a parts list?
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Old 08-09-2018, 11:32 AM   #7 (permalink)
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Default Seiko 5 SNKL23 NH36A Movement Swap

Quote:
Originally Posted by boathead View Post
a bit of a tangent...

how would one take a watch movement, or watch case, and locate a parts list?


http://cgi.julesborel.com

Also: https://www.boley.de/en/case-parts/

Sent from my iPhone using Tapatalk

Last edited by twall3; 08-09-2018 at 11:34 AM.
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Old 08-09-2018, 08:39 PM   #8 (permalink)
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I have found the parts list of the NH36A and the 7S26C from the Seiko Official Repair Site and the TMI Time Module website.
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