What I interpret as a C clip on the end of the winding arbor is in fact the slotted end of this arbor.
As suggested "little persuasion" on the end of the shaft do the job. So the barrels are removable without lifting plates.
Thanks a lot for this help
Is seems that on old models of Hermle 340-020 it is necessary to remove the plates to extract the springs barrels . As seen on third photo the barrell arbor on this mouvement lower one compared with the standart arbor, upper one, there is a snap lock on the end of the winding arbor that prevent...
Thanks a lot , I will look at and feed you back !
I found later this post on this subject, very good photo:
adjusting time on old style hermle 340-020
Before beeig overalled by this professionnal this clock was accurate to better than one minute a week. It was pushed to maintenance on a...
It was overall 1 year ago by a professional local watchmaker for many $. He said to my wife that many bushings have been changed. Some weeks ago my wife go back to him with the clock complaining for 5 min a week lead. He keep the clock a week and ask that everything was all right and that the...