Microscope review of parts

I use a stereo microscope with up to 80x zoom to review the plates and parts before assembly.  This is useful for spotting worn pivots/jewels/bushes/posts or parts that are not clean.  As the parts are so small, it’s not possible to see issues without the microscope.  Each of the parts is reviewed starting with the main plate and the bridges.  Here are the train jewels in the plate:

Omega Seamaster 30 repair and service - microscope review of jewels

And a close up of one jewel.

Omega Seamaster 30 repair and service - microscope review of jewel close up

This shows the posts on which the dial side wheels will run.

Omega Seamaster 30 repair and service - microscope review of plate posts

Then the parts that run in these jewels and bearings are reviewed.  Here is the barrel arbor and we’re looking for wear to the bearing surfaces in particular.  These are smooth and fine.

Omega Seamaster 30 repair and service - microscope review of barrel arbor

Then each of the wheels (gears) are reviewed – to look for teeth damage.  This is the second (centre) wheel.

Omega Seamaster 30 repair and service - microscope review of wheels

And the pivots, again fine in this case.

Omega Seamaster 30 repair and service - microscope review of pivots

This continues with all wheels through to the pallet fork.

Omega Seamaster 30 repair and service - microscope review of pallet fork

And then the dial side components.

For this watch, all parts are fine but damage and wear is not unusual and parts are polished or replaced as necessary – this is essential for good performance and reliable running.  Here is an example of a worn pivot where the right hand pivot may be clearly seen to not be parallel and is scored.

Omega Seamaster 30 repair and service - microscope review of wheels - worn pivot example

And here, an example of worn teeth on a winding pinion – compare the new pinion on the left to the worn one on the right.

Omega Seamaster 30 repair and service - microscope review of wheels - worn winding pinion example

The balance is reviewed next.

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