The lower part of the hinge on my Dual CS 520 was broken. This part replaces the lower part (which fits into the turntable), the spring and upper part (which holds the lid) can be reused. 

The part may be a tight fit - I provide a (messy) OpenSCAD file, in which you may adjust the steepness of the long part in the pegStrut module to adjust for your printer. 

The supports for the little hook that holds the spring may be hard to remove, but the spring shouldn't slip off easily without it, too.

I printed the part in PETG with 0.2mm layer height, with supports for the part that slips into the turntable and a support blocker for the holes - please see the 3mf file.