I'm working on an ETA 1164 triple calendar movement and the day disc does not line up well with its window, see picture. The jumper action seems fine and there are three jumpers for the date mechanism which are all identical.
Has anyone incurred such issues before with this movement? Is the only remedy to adjust the profile of the jumper?
Yes it does, but not enough to endanger the fitting of the pivot into the hole. Burnishing removes the faint marks left in the steel after turning/alteration due to wear or cutting a new pivot. It creates an extremely fine finish, like a mirror finish. It also helps in the rotation of the pivot, preventing it from binding in the hole. If you gauged before and after I don’t think it would change, providing the work has been carried out correctly.
Enicar had two type of caseback.. the bayonet type and a screw type.
The giveaway is a little triangle around the edge of the caseback. I believe this was supposed to line up with a reference on the case.. or maybe the crown.
Good job figuring it out, took me a while too!