RB67 127mm Lens: Delayed Shutter Release From Dried Lubrication
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
Servicing a 127mm Mamiya RB67 lens. Symptom was that there is a delay in the shutter release after the mirror goes up in the body. This is always caused by dried lubrication in the shutter.
I use very small amounts of a moly type lubrication on many parts in the RB shutters. The key is small amounts in the right places. When I open a shutter and find lots of lubrication everywhere, I know that it has been over lubricated. Proper lubrication in a shutter should be barely visible.
