A Surprisingly Dirty Omega Seamaster

Published: June 24, 2014
Omega Seamaster with 1120 Movement

This Omega 1120 powers a very nice Omega Seamaster.

This Omega Seamaster with an Omega 1120 movement came in today. I’m about to do the initial tear down on it, but at first look it is surprisingly dirty inside. The customer complained that the watch was stopping intermittently. The internal condition of the watch matches the complaint.

The customer sent the watch in for service to another company five years ago. You will note if you click on the picture that there are black specks throughout the movement. This is the result of oil and grease drying out in the movement, and leads poor movement performance the movement, including both the low amplitude and the erratic stoppages.

We will treat this watch as we treat each Omega.

First, the movement will be precleaned in a multistage ultrasonic cleaner. Then, we will disassemble the movement. During disassembly, hand clean, adjust, repair, and replace components. Now that the watch is disassembled and hand cleaned, each component is ultrasonically cleaned in a four stage ultrasonic machine. The first stage uses a cleaning solution, followed by three separate rinse jars. Once the components have been cleaned and dried, we reassemble and hand oil the movement. As the watch is reassembled, each component is inspected and proper lubrication is applied throughout the movement.

While the movement is being serviced, case and band restoration are performed. First, all case and band components are ultrasonically cleaned. The ultrasonic cleaner we use for cases is incredibly powerful. The inducer is well below the surface of the cleaning solution, but the surface of said solution bubbles almost like the water is at a light boil. This is due to powerful ultrasonic capitations. These cavitations won’t damage case components, but remove even the toughest dirt and grime.

Next, every portion of the case is polished to match the factory finish. Finally, to remove any polishing residuals, all case and band components are again ultrasonically cleaned. The process is physically and mentally intense, and when our technician has completed it for the day, he’s earned his pay!

Once the movement is reassembled and mated with the case, we perform waterproof testing to 3 atmospheres. The watch is timed and tested on a Witschi Chronoscope in multiple positions for timing, amplitude, and to minimize beat error, and then is placed on a Bergeon Final Test machine to simulate wrist wear.

When this watch is perfect, it will go back to the customer – another repair complete!