Hello,
I note your posting of 10-Nov-2003 on Studio Shutter surgery. I am trying to punch my way into a similar Studio #4.
I can get the lens cells out OK, but the things that look like tin cans are a problem. I can get the front one off, but the rear one just won't budge; it feels really rust-frozen, and so far isn't responding to WD-40. That's OK if I can at least get into the front of the beast.
My question is: what does it look like just before you remove the dial and ring on the front? Is the front flat at that point or is there still something that looks like a ring attached to the front part? Does this assembly unscrew or just lift off? If it lifts off, is some force necessary to get the parts to move?
The dial and ring don't want to "come off" as it stands, and I'm afraid to force anything, so I'm looking for whatever may be holding it on (and how to take it off as well).
Any help you can give will be greatly appreciated.
Thanks,
G
Hi G.,
First remove the lens elements and the barrels. Try some Liquid Wrench on that rear one. It's easier to clean the shutter if you can get them both off.
When you remove the front barrel, the dial that says "Studio" should just lift off. If you have trouble, just try jiggling it a bit or unscrewing it counterclockwise--it may just be stuck under the shutter threads. When you get it off, note the locator pin on the underside of the ring. It matches a hole on the shutter so that the aperture scale will be in the right place when you reassemble it.
The ring under the dial engages a brass pin that controls the aperture setting. The ring also just lifts off. Before lifting it off, set the shutter on "open" and turn the ring so you can see how it works. When you put it back on, you'll press the pin toward the center of the shutter to stop down the diaphragm, so the ring will slip over the pin. You'll notice a screw opposite the aperture control lever--that's just a stop that prevents the ring from getting turned too far, which would cause the aperture control pin to get bent and run off the track.
Under that ring, there are five screws to remove the cover, and that gives you access to the shutter. It's pretty simple, once you get in, but take note of the way the leaves of the shutter overlap. There is one double leaf, and the adjacent leaf goes between the two leaves of the double leaf. When reassembled properly, the leaves should be light tight. If there's a pinhole in the middle when it should be closed, try again.
Good luck!
David