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Craig

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Posted on Wednesday, September 22, 2004 - 09:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

I have a Hi-matic 9 with a shutter that sticks or gums in cold weather with what appears to be an oil. Can this be fixed with an ultrasonic clean or is there a bigger problem as in where is this oil coming from. All help apreciated.
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Dan Mitchell

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Posted on Thursday, September 23, 2004 - 12:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

The most common source of the oil is the grease used in the focusing helicoid. Normally it is cleaned with a solvent such as naptha (i.e. cigarette lighter fluid) or something similar.

Sometimes you can do this by removing the front lens and putting a few drops on the moving parts, blowing them out with air.

The Hi-matic cameras have an auto-exposure system that often creates problems and the diaphragm is the problem, not the shutter. To really do it right you have to take the shutter off the camera and disassemble it. That is quite an "adventure" on these cameras. They are not very easy to work on.

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