Hello Jean-Charles
Thank you for translating
I had taken apart the apron, the tailstock, all parts from the speed adjustment (hydraulik), I had removed (but not taken apart) the box with the gears for gearcutting, the lead screw ... i'd say everyting besides the above described gearbox and the headstock (from there only the arbour which goes to the belt in order to change the bearings) was opend taken apart and cleaned.
Hope anybody has an idea, so I will not have to take everything apart again.
Regards
Anton