eta 7754 gmt chronograph

[parmenion31]

Hi all ,

i need some help (again) , I noticed a loose screw in that wonderfull watch that was stuck in the escape wheel and succesfully put it again in its place

Watch was running wonderfull again but had the "great" idea to tight all the screws in case any was loose , so i tight the screw of the picture too.

I noticed then that the chronograph wasnt working, i unscrew a bit and the watch stoped , i unscrew more and everything came to normal , so i suspect that screw is something like a regulator or something?

And yes i am so novice in eta movements , its embarrassing.

Thanks for your help and knowledge.

[clockboy]

 

It adjusts the depth of the toothing using the eccentric (8401), as shown in the diagram below.  Different caliber but the same function (see page 24)

 

7750.pdf

[bobm12]

"One screw to rule them all"

[parmenion31]

thanks for your quick answer guys, nice one bob.

i think that eta chronographs are too complicated , for me

Maybe i need a clone to work on , it will be safer .