RB67 65mm Floating Element Lens: Replacing With an 871 Shutter
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
Servicing a Mamiya 65mm RB lens. This is a later floating element model. The shutter came into the shop locked up. A quick look at the shutter blades as seen in photo two indicates quite a bit of oil on the blades so this would need a complete disassembly to remove and clean the blades. But the oil on the blades was actually not the main issue here so I ended up just replacing the shutter with a new style 871 (small modification needed to the old housing to fit the new shutter) Benefit will be the Dri-Lube shutter blades and other improved parts. Photo three shows the shutter disassembled with the old shutter on the right and the new one on the left ready to be installed. This lens should be good for many more decades of use.
