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Tinkerer
Username: Lgdavis
Post Number: 14
Registered: 08-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 03, 2008 - 10:18 am: | 
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I have a Miranda F SLR on which I performed some cleaning to free up the mirror return and erratic speeds - with some generous help from Rick Oleson. I used drops of naptha followed by tiny oil drops on gear pivots that seemed to do the trick. But when I had finished reassembly, the shutter jammed after several successful shutter releases - with the next to last release a bit draggy. I took the covers back off and can see no obvious problem. I am thinking the cleaning of the top winding/release gear mechanism may have gotten some grime into gears I can't see without taking the mechanism apart (which I'm not anxious to do without a repair manual). I have had good luck flush cleaning leaf shutters but have never tried the same on a focal plane shutter. I know I don't want to get cleaning solvent on the curtains or mirror, but thought maybe holding the camera on its back and letting the cleaning fluid run out the side might work. I also thought I might use an arosol electronics cleaner to better get in small paces with some power. Has anyone tried this before? |
Turnergande
Tinkerer
Username: Turnergande
Post Number: 44
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 03, 2008 - 01:31 pm: |
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You might take a peak at the slow speed mechanism which is accessed by removing the bottom cover. I found this to be one of the areas that can cause a shutter jam especially on the Miranda F. Also, make sure the shutter curtain has fully completed its travel. Sometimes it just takes a gentle tug or pull on the curtain to complete its cycle. Insufficient tension on the shutter or too much friction on the shutter mechanism can cause the shutter to jam. |
