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Omega rotor problem



I am about to work on a Omega ladies automatic watch.

I found out that the axis of the rotor is out of place and shakes up and down.

What could be done in this situation?



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There normally is a small plate and tiny screw that holds the oscillating weight in place. Could be the axial has broken. What cal is it? A closer photo of the movement would be nice with the weight moved over the barrel.    

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Looks like it says 672 right on the bridge, so yes Oldhippy is right it is the small plate just infront of the winding stem you take away and underneth the rotor you shold find a gear with a slot in it. 
These were not very tight in the first place and if the grove in it is worn it becomes even larger play between them.
You will find the tech sheet for it here , think you are best of looking at the one for the 670.

Edited by HSL

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