I got this amazing Lemania as a running project. The chronograph function does not engage when started. I hope a good service will sort out the issue.
The movement is in great condition.
The nicer the dial the more nerve it takes to remove the hands;)
It is easier to remove the pushers before taking the movement out of the case.
I start on the dial side of the plate removing the hour recorder mechanism.
Here you can see the hour recorder runner and the reset lever. Both located under it’s own bridge.
I now flip the movement over and start taking apart the upper chronograph level.
It is good to take plenty of photos when taking a movement apart with this many parts.
Easy does it, almost down to the base movement now.
Down to the base movement.
I now remove the setting mechanism.
Here you can see the gear train layout.
The old mainspring before taking it out of the barrel.
After cleaning the movement I fit the balance jewels and check that the balance moves freely.
New mainspring fitted in the barrel.
The crown wheel is located under the train-bridge.
The gear train goes back in without any problems.
When putting the balance back in place the movement starts ticking straight away.
Part after part the movement comes back together.
Top chronograph layer back in place, looking great.
I now fit the movement into the case and make sure the chronograph function starts, stops and resets like it should.
The old luminous compound looked like mouse droppings and I do not want it falling off and finding it’s way into the movement. So here I’m replacing it with yellow compound.
Dial and hands back on the movement.
Now that is a beauty!
I’m happy with the performance.
Now I can time my work;)