M7, Bulova, Roman Numerals used on face, wind wheel seperated into two parts, will wind but it will not function.
If the watch will wind and but will not engage to begin keeping time, what is the most likely problem? Would it be the clutch or the spring?
I have not taken the movement apart yet.
I may have found a replacement crystal if GS CMS 798-50 is the part number.
Thanks,
Joel
There are 200 reasons why a watch will stop. (See the full list in "Practical Watch Repairing", by DeCarle) Could be almost anything, from barrel tilt to hairspring issues, to just plain dirt or dry or even too much oil. Binding hands are also a common one.
Does it wind and then resist winding, as if tight? Then your spring is at least unbroken. If there is no power to the escapement, you have issues in the train, if the escapement is under power, it's most likely hairpsring. In 99.9% of all watch services, the hairspring requires adjustment. Sometimes, heavy grease has been used in the barrel, which will eventually dry out and stick the coils together like glue. Magnetization will also stop the watch dead.
