The watch is running, but needs a service. The amplitude is a bit low, and it’s apparently been a while!
This watch has the calibre 601 movement, which is a hand-winding movement with a central second. I like the fact that it has a proper cock for the second arbor which is jeweled.
With the movement taken out of the case and the dial and hands removed, I take out the balance jewels for cleaning.
I take out the balance, pallet fork and the wheel bridge.
Only the barrel and the centre wheel left on the top plate.
The mainspring and barrel. I order a new spring.
The parts are cleaned, rinsed and dried.
The new mainspring.
I slightly wind the mainspring and put the balance in, which starts moving straight away.
With the movement only slightly wound, this is a good amplitude. I adjust the beat error to 0ms.
Now I can put together the bottom plate. The discoloration on the plate comes from somebody using glue for the dial….
The dial is put back on. Quite aged, but in good condition for the age.
The movement goes back into the case.
The case back gets a new gasket.
I ordered a new generic crystal for the watch, but as it has a tension ring, only the original Omega crystal will fit. At over £40, we give that a miss.
A great watch! I didn’t polish the hands, as the luminous compound would have come off. As it’s the original compound, and it’s complete, I don’t want to do that. The watch looks its age, and I like it that way.
Just too bad it has to go back to Finland!
Thursday, June 14th, 2012
Not so fast, young man! That’s why I keep all watches a day or two on the bench … This one ran out a couple of hours after winding. I did wonder when winding why the mainspring slipped very soon. Firstly, this is a manual, and it shouldn’t slip, and secondly, after a couple of turns …
I opened the watch again, and on closer inspection of the barrel, I saw the problem. The groove in the barrel that is supposed to hold the mainspring is worn, and now forms an ideal ramp for the mainspring to break loose.
As an original Omega part, the barrel costs £50! Good thing that someone on eBay sells a complete barrel for £20 + postage! I’ve ordered it, and hope it’s in better condition.
Monday, June 18th, 2012
The new barrel has arrived, I fit it, and everything is fine! You can now fully wind the watch, and it comes to a definite end point, as a hand-winding watch should do.
To celebrate, I lightly polish the hands, and the luminous compound stays in place. Hurrah!