Graphex Optar 135mm high speed spring fell out

iamthejeff · May 16, 2017

I took one of these apart to clean out the old dried up grease inside. In my carelessness, the high speed spring fell out and I did not take a photo of it before to compare. Can anyone familiar with these lenses point me in the right direction?

shutterfinger · May 16, 2017

Why not do a complete tear down, clean, lube, reassembly?
http://www.southbristolviews.com/pics/Graphic/manual-pdf/GraphexShutterService.pdf

iamthejeff · May 16, 2017

I'd love to, unfortunately I lack the skill and finesse. I'd surely muck it up.

Thanks for the diagram though, looks like I can figure out where it goes from here.

shutterfinger · May 16, 2017

Now that I have more time on my hands

The booster spring goes on the post close to the center core with the long end down and seated in the slot of the main cocking lever (white arrow).

iamthejeff · May 17, 2017

Thank you! I was able to figure it out from the service manual anyhow but it's nice to be confirmed.

gorbas · Apr 16, 2018

Thank you Shutterfinger for posting this service manual!
Beside the same problem with the spring I can not also cock the shutter at all. Simply, cocking leaver will not stay in place. If I hold cocking leaver I can open briefly shutter with focusing leaver. Any idea how to fix it with out taking whole thing apart?

shutterfinger · Apr 16, 2018

There is no fix I'm familiar with in this condition. Something is dirty and not moving freely preventing the setting to latch in the set position.
Running this shutter until it stops causes a part to break or it severely degrades its operation after servicing.
One should be able to get it working properly by stripping the main plate, cleaning the parts, lubing as required and reassembling.
The blade controller and shutter blades are on the under side of the main plate and if moving smoothly with the top of the plate disassembled they will not have to be removed.

gorbas · Apr 17, 2018

Thank you Shutterfinger! I will try to go slowly and figure out what is wrong.

specialmonkey · Aug 28, 2023

shutterfinger said:
Now that I have more time on my hands
View attachment 179288

The booster spring goes on the post close to the center core with the long end down and seated in the slot of the main cocking lever (white arrow).

Thank you! This was very helpful to me. I just received a 4x5 Crown Graphic with the same lens and shutter. It was stuck so I decided to look inside but also had this spring pop out and had no idea where it went. One question (if you're still around) - the spring settles nicely on the post, long arm side down - does the spring's arm go under the cocking lever or over - or some other place? And what is its purpose? For now, the arm on my spring is under the lever. My shutter seems good after a little exercising. Having it open allowed me see where it needed a little push (from my flat head screwdriver) - once that was done I could see I wouldn't hurt it by cocking the lever, which became easier and easier with each sequence. It seems the bulb setting didn't work until the dial retaining ring was reinstalled.

Graphex Optar 135mm high speed spring fell out

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