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Part I, Different Close-Up Pictures



On the following pictures you will find a disassembly of a movement!

This little Swiss Made Olma is going to be disassembled!


Caliber AS 1727.
The opened back side showing the Balance, Wheel Train Bridge, Ratchet, and Crown Wheels


The movemet is out of the case and the stem is removed. Here you can see how small the movement is
compared to a match! The match has a width of 2,4 mm.


Before we remove the hands using a hand remover we have to protect the dial with a piece of paper.


The hands are now removed with the hand remover which is shown on the right.


The dial is removed and you can see the bottom side of the 8,5 Lignes (diameter 19,2 mm) Caliber AS 1727.
The bottom Shock Protection Jewel can be seen to the left. To the right on the movement you
can see the Keyless Works. To the right of the movement are the Hour Wheel and
the washer that is located between the dial and Hour Wheel. In the center of
the movement is the Cannon Pinion arbor around which the Hour Wheel is turning


Now the set bridge and the Minute Wheel are also removed i.e. the complete Motion Works.


We have now disassembled the whole keyless works. From the top you can see the Set Spring, Clutch Lever,
Set Lever, Setting Wheel and in the bottom the Winding Pinion and Clutch Wheel.


We are now back on the front side of the movement and the Ratchet Wheel, Crown Wheel are removed
and can be seen to the right. Above the Crown Wheel is the Crown Wheel Ring
and to the right are the Click and Click Spring


The Barrel Brige and Barrel are now removed.


The balance is now removed.

You can find close-up pictures here; Part I, different close-up pictures including this Olma caliber.


The Pallet Bridge and Pallet Lever is now removed.


The Cannon Pinion is removed using and old #2 Tweezers.


Finaly the Wheel Train Bridge is unscrewed!


The Wheel Train lies beside the Bottom Plate


All parts in the movement tray after disassembly. Caliber AS 1727.


All the parts in the AS1727 spread out as can be seen in the book page 32 to the left. Unfortunet I was not able to open up the Barrel. Hence, the Barrel Arbor and the Mainspring is missing in the photo.