I wanted to share this watch with you, as the movement has many interesting and well executed features. Wynand sent it in for a service, and I’m happy to oblige…
Nice oscillating weight with a proper ball bearing, and of course the high-beat 36,000 b.p.h. 444-427 movement.
The amplitude is a bit low, but the beat rate is still very constant.
The 10 o’clock marker has come off the dial, and was lodged against other markers. The second hand is bent badly.
The second hand is bent in the up/down and the left/right direction…
The dial with the re-set marker. I put it back into place, and very softly re-riveted its studs.
Looks like the dial was restored once, and that’s why one of the markers wasn’t set properly.
The second hand in all its bent glory 😉
After a bit of fiddling under the microscope, it’s nice and straight again.
Lovely bottom plate.
Let’s start to take the movement apart.
The auto winder mechanism is lodged in a little opening at the top of the photo.
The gear train with the the hacking second lever below the gears and right above the barrel arbor. Lovely execution!
What do they mean by “Do not open”?
Now it’s time for the bottom plate.
A very snappy date change, with an unusual quick-set date.
Check out the long lever on the right – this is the quick-set date lever, which is operated by pushing in the crown and releasing it.
In this picture, you can see the friction clutch, which isn’t on the cannon pinion, but on the second wheel (the one driven by the barrel), and drives the cannon pinion via an intermediate wheel, which also serves as the minute wheel. Cool stuff.
All ready for reassembly.
The mainspring goes back into the barrel, after having grease the barrel wall with braking grease, and greasing the mainspring.
Now I put the balance jewels back in.
The base movement is back together, and you can see the space on the left reserved for the auto winder.
Nice and straight, and straight after putting the movement back together. The amplitude will increase in the next couple of hours.
Now I put the bottom plate back together. The tension of the friction clutch is determined by a circlips that fixes the pinion to the second wheel arbor.
The quick-set date lever is back in place.
And the bottom plate is complete and ready for the dial.
The auto winder is back in its slot.
And the movement goes back into the case.Nice watch, with a great movement!