The 861 movement is extremely dirty.
Removing the case ring shows first signs of rust..
Yes it will get a new stem!
Wonder how it looks underneath the dial.
Dial is covered in corrosive particles.
Not too bad! Only the setting lever screw, winding pinion and sliding pinion needed replacing.
I start taking the chronograph layer apart.
I’m down to the base movement.
The winding pinion has fused together with the sliding pinion.
Movement first gets a manual clean and then two rounds in the cleaning machine…
I see that the balance moves freely after fitting shock jewels.
I put the gear train back in place.
Looks a little better with new parts..
Setting/winding mechanism almost back together.
I clean up the setting lever spring and we can once again wind the watch!
For the first time in a while this movement is ticking again.
I start putting the chronograph layer back in place.
Now that looks a lot nicer than when I started!
Resetting the hour recorder was almost impossible and I noticed the corroded surface on the hour recorder stop lever.
I file down the surface and now we’re back in business.
Movement now working like it should and ready for the dial.
I cleaned the dial up a little and applied new aged compound (sorry patina purists) I test the hour recorder a little while making sure there is no creep.
Watch preforms well after settling.
