I've searched high and low but could not find much on DIY work on a Prontor Press shutter that came with a Sinar mounted 1972 Schneider SA 65mm F5.6. It was working well at 1/15 and faster but slower speeds were sticking and it clearly needed a cleaning.
Taking general tips form this site/links, I manage to do it - it's fairly straight forward. Open front four screws then same with back four. Remove plate holding shutter leafs - note carefully where everything needs to go back to. I used Coleman fuel and an old toothbrush ( as it was hard to get to with anything else )to clean the 3 little cog wheels that was clearly sticking and that was running eratically when the shutter was triggered. While there i cleaning everything else where possible.
The shutter now fires crisp and accurately, I decided not to lubricate as it looks in very good condition otherwise and acc. to a prev post Prontor self didn't lubricate it either. If you think about how little work it is going to do as a LF lens in an amateur's camera, lubrication is more likely to cause problems than anything else !
Posted on Wednesday, November 07, 2007 - 07:32 pm:
Thanks Dawid
I too could find nothing on the net accept this post. I acquired a #1 Prontor Press to mount a Schneider 240 G-Claron in. It jammed fairly soon after, so I followed your steps and found that the screw holding the slow speed escarpment had fallen out! after getting that back in and cleaning up in there, I found that there where Six shutter blades were there should be five. Now the shutter is crisp and accurate like yours. Funny thing is I got it cheap as there was rust on one of the blades....Guess which one I took out
Now I can get on with calculating the F stop Scale Brian
