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Zakkattack
Tinkerer
Username: Zakkattack
Post Number: 12
Registered: 11-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, December 05, 2010 - 04:01 pm: | 
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I have a Zorki 4 however the lever that touches the back of the lens and adjusts the rangefinder mirror is very stiff, won't even move out. Is this common, any suggestions before I remove the top ? .
Thanks
Zakk |
Mareklew
Tinkerer
Username: Mareklew
Post Number: 205
Registered: 03-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, December 06, 2010 - 12:08 pm: |
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No, it should actually move quite freely, with rather strong spring action.
I'm afraid most likely the grease gummed up in the sleeve bearings and between the lever of RF and baseplate. Don't force it - the lever action is enorm, so you can exert huge torque in effect, but the lever isn't bulit strong enough to withstand it - the lever action is there to reduce movement, not increase force...
Take the top off and investigate. There are notes about it from Rick Oleson somewhere here (I believe they were form him, most good notes are actually). One sure thing: remember to set X-sync to X before losening screws, so that you know, where the contact was left before lifting top off, else you will have to re-set Xsync from scratch.
Marek |
Mareklew
Tinkerer
Username: Mareklew
Post Number: 206
Registered: 03-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, December 06, 2010 - 12:15 pm: |
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BTW: If you need, I have a perfectly working Zorki 4, which I overhauled myself, for sale or trade. Shutter keeps all speeds within reasonable tolerance and runs uniform across frame. No spacing problems, accurate RF adjustment with provided Jupiter 8 (I have no other RF coupled lenses I'd trust at hand right now), very good cosmetic condition, no signs of abuse. Comes with a worn down never-ready-case.
BTW#2: If you need a spare rangefinder movement, I also have one complete factory-new assembly, but I'm almost more reluctant to part with it than with the camera it fits.
PM me if interested. I'm in Germany, so shipping to UK is still reasonable ;)
Marek |
Zakkattack
Tinkerer
Username: Zakkattack
Post Number: 18
Registered: 11-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, December 17, 2010 - 05:41 am: |
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I have traced the fault to the pivot that holds the aperture / RF arm. This pivot goes from inside the shutter box, up through the top part of the body to the RF. It is totally seized up. I have removed it, tried soaking in naptha but nothing. Guess I'll have to find a junker for spares. |
Mareklew
Tinkerer
Username: Mareklew
Post Number: 212
Registered: 03-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, December 17, 2010 - 12:29 pm: |
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Try carburetor cleaner, just keep it out of the optics, especially the split-prism. Also, soak in naphta is more like 12-hour job just in case you gave up after an hour or so...
Best is doing it in an ultrasonic cleaner, again - keep the cemented prism out of the solution
Marek |
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