A client has sent in his Citizen Diver for a service. It’s not keeping time and looks fairly beaten up.
Movement looks to be in decent condition.
I start by taking out the oscillating weight and the auto winder mechanism.
Dial and hands have some patina, but overall pretty good condition.
The date/setting/winding mechanism.
Unlike many Seiko movements, the Citizens can be wound manually.
Here you can see the gear train layout.
Plenty of dirt!
I have cleaned the movement and it’s ready to be put back together.
I fit the Para shock (shock protection jewels) and see that the balance moves freely.
Mainspring goes back into the barrel.
Gear train coming back in place.
Gear train back in place.
I start fitting the winding/setting mechanism.
I now fit the date mechanism.
Date disk back in place. Note it also features a quick date mechanism.
Balance goes back in place and the movement is ticking like it should.
That looks pretty decent!
Dial and hands back in place.
Case is taken apart and given a good clean and a new crystal.
Movement goes back into it’s case.
Great movement that was ahead of it’s time!
