Watchmaking training II : movement uncasing, small restorations

A second steps to the initial watchmaking training, I suggest the uncasing of a simple watch (the caliber can remove from the back side) and a small restoration on a rotating inner bezel of a Russian chronograph (early 90's).

We are not still in the main core of the horology but we will need to feel more comfortable with uncasing of the caliber and the dial. For a simple watch, the first step is to remove the stem for the caliber. There a small screw just beside the stem or a pusher. Unscrew 1/4 of turn per 1/4 of turn or push the button until the stem comes freely. Remove the fixing system that could be a ring or screws to extract the caliber+dial+hand from the case.

We just have to be be careful with the hands.

Another way to access to the dials and hands is from the front side. The acrylic crystal is either adjusted to a "lunette" or less frequently directly to the case body like for this Russian chronograph :

There is a missing lumefor a triangular mark on the inner rotating bezel that I wanted to restore.

The crystal has a very angled edge and can be lifted using a special tool to take it firmly while exerting a radial compression.

Once done, I could access to the dial

I used a Bergeon aqueous green lume (non-radio active of course) and the thiner brush I could find. I painted the mark under the 3.5 loupe. Here is the result :