Eta 555.115

[Macaholic]

Hi All,

 

I'm working on an old Heuer with a 555.115 movement in it.

 

I am able to advance the calendar wheel when the crown is in position 2, but the calendars does not change automatically when the watch hits midnight (or ever).

 

I've tried both letting the watch run for 48 hours, as well as just swinging the arms for a full 24 hour cycle with the crown.

 

Does anyone have any insight on this issue?

 

Thanks!

[rogart63]

Something is broken in the date shifting mechanism? Or just slipped out of place? Have you taken of the hands and dial to see what happens when you turn the watch around?

[rogart63]

You have a document on Cousinsuk. Search for ETA 555.115 and download . My guess is a some of the date wheels. There are some interchangability from other movements. So it could be repaired. 

[Macaholic]

I'll be honest, I had never heard of CousinsUK, that's a great resource!

 

Turns out a complete disassembly and cleaning of the movement was what fixed it, so something slipping out of place was probably the culprit.

 

Strangely, the calendar still wasn't advancing during my testing until I reassembled it back with the chronograph assembly in the case, even though as far as I can tell, that has nothing to do with the calendar.

 

Thanks Rogart63!