Seiko 6139B Assembly Tutorial (Part 1) -Train & Chrono Works

Hello to you all. This is a video tutorial on the Seiko 6139B chronograph movement you can also follow along if you have the Seiko 6139A movement as they are very similar.

This has been a video I have wanted to film for a long time but its not been easy to film and actually rebuild at the same time.I have not seen too many videos on the rebuild of this iconic movement so figured I would be up for the challenge.

I show all part placements and where I oil, I am just a hobbyist so this is not a clinical build but hopefully is enough for you to follow along to and learn the mechanics of this wonderful movement.
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Видео Seiko 6139B Assembly Tutorial (Part 1) -Train & Chrono Works канала My Retro Watches