RZ67: Stuck Lens and Locked Wind from a Broken Cocking Coupler
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
This Mamiya RZ67 arrived with a stuck lens on the body and the wind lever locked. With a mechanical like this, the issue is often a damaged lens cocking shaft assembly. This proved to be the case here.
Photo two shows the camera with the front cover removed. The cocking gear assembly gear is at the bottom in the photo. Top left is the governor for slowing down the mirror so that it does not slam upward and crack. Photo three shows a closer view of the cocking gear and photo four shows the gear assembly with the lens bayonet mount moved aside. Visible are a number of lens mount shims that need to go back in the correct spot.
Photo five is of the cocking gear assembly removed from the camera. It actually looks OK from here. But, after removing the gear, the coupler is shown in the last photo with the two broken off tabs (well, you can’t see them anymore, they were at 3 o’clock and 9 o’clock). A new gear assembly and the camera is good to go.
