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Good day, guys!  This is my little way of giving back to this wonderful community.


We usually receive for repair a watch handed down by a father to his son.  In this case, its a watch given by the son to his father - a Seiko 5 from the early 1990s.


The watch has seen better days, with its hardilex crystal beaten and the watch not moving at all regardless of the amount of shaking you give it.




The hands are corroded and the dial mounted on the movement using contact cement.




I'll skip the disassembly and show you how the Seiko 7009 movement works.  The Seiko 7009 technical guide is easy to find on the net though.


First to be mounted is the center wheel that drives the cannon pinion.  After which I install the escape wheel and the center wheel bridge.




The third wheel and fourth wheel is installed next.  Note that the fourth wheel drives the second hand directly.  Then the click comes next.post-603-0-15265100-1434282350_thumb.jpg


Prior to installing the unified barrel and train-wheel bridge, you have to install the pawl lever and first reduction wheel assembly.  The assembly is held in place by the first reduction wheel holder.  Take note of the orientation of the pawl lever.




I find it difficult to install the barrel and train wheel bridge while ensuring that the click spring doesn't get in the way.




<end of part 1>



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Great!  You're still here. 


The pallet fork and bridge and the ratchet wheel are then installed.




After cleaning the anti-shock jewels, the balance assembly is then installed.




The movement is turned over to install the keyless and calendar works.  Note the big day corrector spring.  Day quick set is accomplished by pressing on the crown in the first position. When setting the day, the crown pushes the setting lever which in turn pushes the day corrector.





<end of part 2>

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Don't worry, this is the last part.


As I was wrapping up the movement service, I noticed that the automatic winding will not work.  I found out that the pawl lever and the second reduction wheel are worn out.  Compare the worn out parts in the left and the replacement parts in the right.




After replacing the said parts, I went on to work on replacing the crystal, cleaning the case and bracelets and re-luming the hands.




Yeah, I could have done better on the hands.  The lume was too thick.


I then installed the hands, placed the movement inside and demagnetized the watch.




And here's the before and after shot.  All done for a friend for free.   :D



I hope you enjoyed it.  Please let me know any suggestion on how I can improve on my hobby.



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Nice work, great to see another old banger restored to its former glory. It does again highlight the main weak spot in Seiko autos - the winding system. Simple & effective design, unfortunately cut short by poor or non existent servicing. If its not the ratchet and/or the pawl it will be the oscillating weight bearing.

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Really good write-up mate.

Isn't it funny how when the word gets out you can fix watches, all the ones hidden in drawers for years suddenly surface :p

I don't think my parents have a friend who's watch is not fully serviced now ha ha!!  Its great practice and confidence buildings to do them though.


Also I love the way a new crystal makes a dial face pop.

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Was inspired by this amazing write-up, which ultimately got me embarking on the same with one of my spare 7009s.


Am now getting the oils lined up before starting on the cleaning/reassembly.


This is my first, so the main objective was to get familiar with the inner workings of the watch, as opposed to the actual service work which should naturally follow.








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Still highly motivated by Joel's stripdown, I proceed to put the 7009 back together again.


When it's done, I see that it doesn't work.


Not surprised, or the least bit demotivated, I go ahead and strip it down again.


During the process, I see where I have made a mistake in the balance wheel installation.


It does not rotate freely as it should.


i go ahead to strip the watch all the way down anyway and it seems much easier now.


I learn a couple of tweezing and screw-driving techniques that work for me and also note a couple of better tools that might help me better (finer point tweezers, a step smaller screw-driver, etc).


Have seen a balance wheel installation video that helps :



Will call it a day (with the 7009 stripped down as it stands, again) and continue tomorrow.


I'm not sure, but I probably should have started a new thread.


My apologies, being new to this forum, if I have violated any rules.





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