I get quite a few Dynamics for repair, and not all end up on this blog. A lot of them are slightly “Frankenwatch”, as they are desirable, so it’s not always a pleasure working on them. Also, removing the crystal was always a huge problem (there is no case back you can unscrew, as the cases are monocoque), until my friend and colleague Al from archerwatches.ca pointed me in the right direction……which is a blow of compressed air through the pendant tube! It works a charm, and lifts the crystal up without any damage. You just remove the crown, and hold the nozzle of your air blower onto the pendant tube, and pop goes the weasel.
With the balance, auto winder, and pallet fork removed, you get a view of the winding gear. The crown wheel drives an intermediate wheel, which drives the so-called “wig-wag” pinion. It’s the smallest of the pinions, driving the click wheel, and it has a little spring pressing it onto the wheel. When the auto winder works, the wig-wag pinion is pushed away from the click wheel, disengaging the manual winding mechanism from the automatic one.
The gear train is now visible.
My only gripe with these Omega movements is that you have to put the dial and hands on before you can put the auto winder in place, as the second hand pinion has to be supported from the back to press the second hand on. I curse the engineer every time I have to do that 😉
The dial and hands are in super condition, and so is the case. A pretty rare example of an Omega Dynamic in top condition. Lucky Mandy! With a new crystal, it’s looking great, and if I can ever get hold of a Dynamic in that condition for my wife, I will definitely do so.