Watch Service: Omega DeVille. Cal 620.

Omega vintage service

Another vintage Omega, this one houses the manually wound Omega 620 calibre. Anna has opted to have this one fully restored – the movement will receive a full service, the case will be sympathetically refinished along with a light polish of the glass and finished off with a dial restoration.

The very first thing I will do with this watch is get the dial removed and sent off to the restorers, they have a bit of a delay at the moment, but it should work out nicely that once the watch reaches the front of my service queue – the dial should be on its way back.

With the dial already removed I can begin to disassemble the movement, starting on the dial side.

Omega vintage service

Next I turn the movement over, I haven’t removed anything just yet in the image below, its another nice looking vintage Omega calibre.

Omega cal 620 service

First to be removed is the barrel bridge.

Omega cal 620 service

Closely followed by the train bridge.

Omega cal 620 service

I’m going to remove the pallet bridge next. All the train wheels have been removed and each one individually checked for any signs of damage or wear that could cause me issues later on. They were all perfect on this watch so I continue with the service.

Omega cal 620 service

The movement is fully disassembled prior to cleaning. This ensures each part is properly cleaned in the watch cleaning machine.

Each part is carefully loaded into the correct section of the basket prior to cleaning.

Omega cal 620 service

Once cleaned, as always, the first parts to be oiled and refitted are the shock settings and keyless works.

Omega cal 620 service

New mainspring to be fitted.

Omega cal 620 service

I then fit the barrel, complete with new mainspring into place, followed by the barrel bridge.

Omega cal 620 service

Train and train bridge are next to be fitted.

At this point the watch is running and I will oil all the Jewels and escapement of the watch.

Omega cal 620 service

So the dial is back and the restorers have done a great job. Firstly a before image…

Omega cal 620 service

And after…

Omega cal 620 service

Certainly this dial has been brought back to life!

As always the watch is checked on the timing machine prior to being tested over 5 days before being returned.

Omega cal 620 service

Now onto some pictures of before and after of the completed watch.

Omega cal 620 service
Omega cal 620 service
Omega cal 620 service

Thanks for reading,

The Watch Professional

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