Kiev-88 Mirror flip delay

[Mr_Flibble]

A day ago I shot three rolls of film without trouble with my Kiev-88. But today when I tried a 'new' lens on it. The shutter didn't respond when I pressed the release.

After taking the lens off and inspecting the mechanism I saw the mirror moving up very slowly for the first half inch or so and then flip up normally in rapid motion the rest of the way followed by the curtains traveling across the film plane like they should.

Now, I did install an anti-reflection kit from Aki-Asahi, but I can't see where this material is interfering with the mirror itself.
I think the mechanism itself is hanging up on something.

Does anyone have any ideas to what might be causing it?

 

[farlymac]

Could your "new" lens have interfered with the mirror, Rick, and now it won't act right because something has become bent or out of place?

PF

 

[hanskerensky]

Maybe a foreign object got inside when you changed the lens ?

I allways would think about the things changed on the camera recently. Maybe something from that anti-reflective kit got loose ? Maybe outgassing of the glue of that kit ?

Ach, so many things that can go wrong with a camera !

 

[Mr_Flibble]

I don't think the Mir-26b screws any further into the body than the Vega-12 I bought with the camera. If anything the automatic aperture control of the lens is not working and the pin doesn't offer any resistance.
The shutter does fire with a lens on it, but just with the delay.

The anti-reflection sections at the side of the chamber don't interfer with the motion of the mirror at all. Might be one of the pieces stuck to the underside of the mirror and the baffle, but I don't see how.

🙁

Will have to look into the foreign object theory.
If all else fails I can send it to a repair guy.

 

[Mr_Flibble]

You were more or less right Hans,

I had positioned the rear-most anti-reflection strip that's on the plastic light baffle on the inside top of the camera a little too far forward. When the mirror comes down it rubs against the light baffle and ends up pressed against it.
On release the smeared out glue from the strip retarded the mirror's flip up.

I repositioned the strip and cleaned up the adhesive. Camera works fine again.
I only wish I had figured it out before I removed the three anti-reflective covers inside the camera. Replacing that one little screw is going to be another PITA! 🙂

 

[hanskerensky]

Good show Rick !

Allready saw that you solved it on the Analoogfotoforum 🙂

 

[Mr_Flibble]

Next up: fixing the aperture control on the Mir-26B I "bought" of my friend Ron.
Stop-down pin isn't working.

Already found a website with a step-by-step disassembly and fix.


By the way,
May 3-4, there is a re-enactment event at Museum Eynderhoof in Neder-Weert. Nice location to shoot pictures. I'll be around wearing green stuff and a vintage camera 😉