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Seiko 5 Problem Identified...


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Some of you may remember that, some weeks ago, I picked up a cheap Seiko 5 automatic for a tenner - not the nice one with the blue face that I posted about recently, a different one - and discovered that it wasn't holding a wind.

 

I took the case back off and then the rotor arm to discover that a forked spring or lever activated by the back and forward movement of the rotor isn't connecting properly with a gear wheel - and this is the gear wheel which helps to turn the ratchet wheel, etc... The gear wheel is incredibly worn and not responding to the action of the lever. You can see the offending spring on either side of the worn gear in the close-up below.

 

To replace or not to replace? The answer, for me, is no. I'll keep the movement for spares as the balance is in good order.

 

Seiko%205%20problem.jpg

Edited by WillFly
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Will, in order to replace the broken part the whole train wheel bridge needs to be removed I regret.

 

It is secured to the driving wheel with a little circlip which is under the train wheel bridge.

 

Sorry to be the bearer of bad news my friend.

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No worries - I've just sniped a nice Seiko 5 on eBay for a tenner! It's in GWO except for a broken crystal and missing hands. All this happened 25 years ago and it's been lying in a drawer wrapped in a cloth since then.

 

So. I can decide how I want to play this. My guess is I'll take the hands (they match) from the first one and refurbish the one I've just sniped - and I have another one in the offing on eBay...

 

It'll end up being a Seiko FrankenFive!

Edited by WillFly
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No worries Will...Just find a good Wheel on eBay ( the rotor and his train Wheel ) and you will restart your Seiko 5... a good friend here had a movement for mine ( 6119C ) My movement was missing all the automatic train Wheel and the smal spring that retain the ratchet Wheel, now my Watch works very well.

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