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Restoring / Repairing A Seiko 7T32 Quartz Movement - Videos


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In no way I intend to steal the job of our Mark, from whom I only can get inspiration (both in making the videos and in servicing the watches), but I started some time ago documenting (silently) my services in a series of videos. all watches are mine to either keep or resell on the popular online platforms, funding in this way the purchase of more expensice, better mechanical watches. But that is another story...

 

With this post I would like to introduce a series of parts of a video I made servicing a Seiko 7T32 quartz movement last week, and for the first time talking about it live (btw, I hate my voice...)

 

The video was prompted from some friends on another forum which were wondering if it was worthwile servicing this particular movement, since it is all in plastic (well, almost all). The thing is that I like tinketing with this movement, even if it is deemd by experts as a waste of time, since it is usually swapped for a new one when it brakes down. I am though of the opinion that this particular series of quartz chronographs deserves a proper service, also considering that it is not in production anymore, and you cannot find them easily anymore at decent prices.

 

Enough said, here the series of videos (6 parts in total)

 

Part 1:

 

 

Part 2:

 

 

Part 3:

 

 

Part 4:

 

 

Part 5:

 

 

Part 6:

 

 

There will be a part 7, in which I deal with the dial side of the movement, but it is still in the works.

 

Hope you enjoy the videos, and any comment / criticism is very well welcome.

 

George

Edited by GeorgeClarkson
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  • 2 weeks later...

Unfortunately the video showing me working on the dial side of this movement never made it to youtube, since the memory card got corrupted somehow... it was a 8GB memory card with more than 2 hours of video on this watch, of which I managed to recover almost all (the videos you already saw and some more - unrelated), but that video in particular got ruined forever.

 

I can though show the final result...

 

6.jpg

 

7.jpg

 

I had bought a Seiko 7T32-7B30 NOS case with dial and hands, and what you see above is the final result. The only thing that is still "in the works", is the chronograph second hand, which is not original, but taken from a spare movement I had and it is slightly golden, not completely chrome as all the other hands of this model 7B30. I am looking for a proper replacement, but until then, it will have to do.

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    • Hello and welcome from Leeds. 
    • Unfortunately I'm not that lucky. I started on the train side and after I noticed the binding I pulled everything out except the driving wheel to rule everything else out. It still binds. I'm going to double check that the pinion is fully seated on the staff first, then if no joy I'll push the bridge jewel up a fraction of a mm. Fingers crossed!
    • Happy to have helped, great way to start the day with a win! 🥳
    • Thank you for the advise!! It worked. The setting screw was a lock/unlock to remove the rotor. 
    • I have that French tech sheet too, it is a little different than the English one (eg, it doesn't have the auto works diagram). BTW, it looks like you are looking up the case number in the 1979 ABC supplement. The 1974 ABC catalog does have the 3093 case. As you determined it takes the 1222-5 crystal.  When I serviced my President 'A' (which also takes that crystal), I was able to fit a 29.8 crystal from my DPA crystal assortment. Those are, in my opinion, a great deal. The assortment comes with 10 sizes each from 27.8mm to 32.4mm in 0.2 increments. I pretty much use them for any non-armored crystal that takes a high dome crystal. I think they no longer make them but Cousins has still has some in stock but when I bought them they were around $40 for the set and now they are around $100. Still, at 40 cents a crystal it's still a good deal. For the large driving wheel, I remember I once assembled the keyless/motion works first and when I placed the large driving wheel it was interfering with the setting wheel on the dial side as the teeth were not fully meshing and it wouldn't fully seat. If that isn't the issue I got nothing and am looking forward to see how you solve it 🙂
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