Yashica 5000 (Copal SV) shutter problem

[imaje]

Hello all!

So diving into the wonderful world of Rangefinders, I've found myself with a keen interest in Yashica's (I'm already in love with the Electro 35) But I wanted to check out something a little more manual.

I got a Yashica 5000, which, seemed in relatively good condition, shutter was a little sticky, rangefinder no cosmetic damage etc..

So I set out to clean the shutter mechanism, following various advice from this forum and other places.

I noticed however that after taking the top plate off the shutter suddenly stopped firing completely after a couple of tests on all speeds.

Checking things over, I needed to ensure that the shutter release was still connected to the shutter mechanism.

This is what I now see when firing the shutter

https://www.youtube.com/watch?v=DbhwLUcOiCg

The self-timer works, only if I gently release a tiny tab at the 9/10 o'clock position. Everything else seems to be moving freely when gently moved or knudged, no gears seem to be stuck or Jammed.

I'm scratching my head over this one, is there a way to force the shutter to fire? To at least confirm that the blades themselves are not causing the issue?

 

[Dan Daniel]

Welcome to rff.

There should be a plate on top of the mechanism exposed in your video.This will have various slots and such in it. Most likely without this in place things won't work.

Looking at the bottom of the shutter in your video, there is a lever sticking out of the body. On top of this is a strip of metal going from right to left with a small metal dot on the left end. As I remember, this is a self-timer engagement or something like that? Anyway, it is very possible that this not being in the right position will cause the shutter to not fire.

Well, whether this is the specific problem or there is another lever not in the right position, the top plate will hold them correctly. To install, there will be a section of the plate where the groove has a series of steps or a couple of sloped sections. This goes to the right and a pin on the escapement will ride on this.... Basically all the levers need to be in the right position.Maybe this will help-
https://oldcam.wordpress.com/tag/copal-sv/

Shutters have differences based on their specific camera use,but the basic mechanism is the same. For example, the shutter in the web page has a long lever with a red dot at the end coming out of the bottom; this is the same as the short lever on your shutter, for activating the self-timer mechanism.And your release leverage may be coming in from the back instead of being on the side, etc. Spend some time getting oriented to these parts.

 

[imaje]

Thank you for your advice!

Thank you for your advice!

Hello,

Thank you! My journey has been smooth sailing before this mess haha!

Thank you for you help so far. I can confirm that I should be able to fire the shutter even without the 'Speed plate' just it will only fire at one speed.

According to this link:

http://www.mikeeckman.com/2016/11/yashica-lynx-14-1965/

However, I cannot fire the still. I am thinking of removing the self timer mechanism to give that a closer inspection next..

 

[imaje]

Another symptom..

When I release the shutter with the same motion in the video posted above, if I have cocked the self timer, it does not start the self time, whereas it did before.. hmmm

 

[imaje]

So a progress update, I have removed the self timer mechanism and it looks to be in great shape.. however, cocking the winder and releasing the shutter still have the same effect.

I feel like I just need to manually trip the shutter somehow.

Can anyone help?

 

[imaje]

Progress!

So I have managed to get some movement out of the Shutter mechanism and I can now cock and fire off the shutter. However there's still a problem.

So this shot shows the main delay catch that is now in the 'de-cocked' position. This now moves freely and as expected when pressing the shutter release.

Now we have what I think is the problem. The Green arrow shows the part that is now not moving which by extension I assume is preventing the other parts (yellow) from moving in a clock-wise direction which from what I can see is what moved the shutter blades themselves.

 

[imaje]

Okay, finally, I have results..

After removing the shutter speed gear set. I can see the problem.

https://drive.google.com/open?id=0ByTl2FMRXfkGcUdyUjNLYzZtdjA

It looks like this little lever which should slot into the little stud that is on the ring that moves clockwise.

From the video, you can see that if I physically move this lever into position, the shutter works exactly as expected.

Now I need to work out why this does not slot into place when the shutter is cocked.

 

[imaje]

Found the problem!

Found the problem!

https://drive.google.com/open?id=0ByTl2FMRXfkGby1tTWNvOTNTX3M

This isn't my example but it shows what is missing on my shutter. There is a hairline spring that wraps around the pin to this lever which opens and closes the shutter. I believe the spring is still there on mine, but it has been dislodged.

So now I can foresee the arduous task of putting the spring back in place.

I'm not getting many responses here. But im posting my progress for anyone that might have the same problem