RB67 Pro SD 120 Film Back: Broken Wind Pawl Locking the Lever
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
Servicing a Mamiya RB67 Pro SD 120 film back. This back came into the shop locked up, the wind lever would not move. During disassembly, I found a broken wind pawl that was causing the problem. The last photo shows the broken pawl/spring on the right hand side. After a new part was installed, the back is working perfectly. I find that many repairs to film backs need parts replacement and this was no exception.
