RZ67: Shutter Not Fully Cocking, Broken Cocking Gear Assembly
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
Mamiya RZ67 repair. Symptom of this camera was that the shutter would cock but not completely and so the lens would appear to work on mechanical mode but the blades would not open. Inoperative on electronic mode. Issue was the lens cocking gear assembly had a broken drive part (third photo shows broken part with the two small pieces snapped off) I often see these parts broken on the RZ. A new cocking gear assembly fixed this up. Since the bayonet ring had to be removed, upon reassembly it needed to be checked for flatness by measuring three points on the ring and making sure that they were within 0.1mm of each other. Each of the six bayonet ring mounting screws has shims underneath for adjustments. Bottom cover removed for fine tuning of release switch.
