Hi! In the previous video, I repaired a rusty non-working Tag Heuer by cleaning, lubricating, and replacing some parts. In this video, I'll do it over again because it stops again due to a small rusty part. Also, since it sometimes failed to start the hour recording, I will replace some more parts.
- Part 1 • TAG Heuer Chronograph ...
In this video, I'll share lessons learned and some amateur mistakes. I hope this video helps someone not to make the same mistakes.
This movement is Valjoux 7750. This is an automatic chronograph movement. Since ETA reproduced this movement as ETA 7750, we can still buy NOS parts easily and reasonably, even a screw. ETA 7750 is identical to Valjoux 7750, but ETA made some changes. The balance assembly is one of them.
In my opinion, Valjoux/ETA 7750 is the best chronograph movement for watch-making/tinkering hobbyists. The movement design is robust and simple so it is easy to service it. The tricky part is the oscillating pinion and clutch. I'll share what I did, but if you have any tips on the part, please let me know.
I'm doing this as a hobby. This is non-professional work. Any questions or suggestions are welcome. I'll post some more automatic chronograph repair videos. If you like this sort of watch, please subscribe to my channel and stay tuned!