Cleaning a watch movement

One of the most important steps when servicing a mechanical watch movement is to thoroughly clean all of the parts to remove all traces of debris, oil residue and other contaminants from the surface of the parts. Cleaning movement parts is necessary for many reasons, firstly a clean movement will keep time more reliably, oneContinue reading “Cleaning a watch movement”

Servicing the Seagull 3620 (Unitas 6498) – Disassembly

In this tutorial, I will show you how to disassemble the Seagull 3620 movement. This movement is a clone of the Unitas (ETA) 6498 and thus the same process can be used to disassemble both movements. There is also a Seagull 3600 movement that is almost identical to the 3620, however, the second-hand subdial isContinue reading “Servicing the Seagull 3620 (Unitas 6498) – Disassembly”