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Message |
    
Will_inoue
Tinkerer
Username: Will_inoue
Post Number: 1
Registered: 06-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 06, 2007 - 06:14 pm: | 
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Hi all,
I'm working on a Ricoh Five-One-Nine with a Seikosha MXL Shutter. One or two of the aperture blades is dislodged. Question is - how do I remove the shutter assembly from the camera body so I can get at the diaphragm? There doesn't seem to be any accessible screws. On the front there is a chrome decorative metal plate at the base of the lens assembly (No leatherette to peel back and reveal screws). And on the inside of the body there are no screws either. It seems I have to remove the focus stop then focus the lens out of the helical. And I'm not sure if this is the correct method or not. Any help would be appreciated - Thanks. -Will |
John_scott
Tinkerer
Username: John_scott
Post Number: 6
Registered: 08-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 06, 2007 - 07:33 pm: |
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To get at the aperture (and also the shutter) blades of the late 50s Japanese cameras with Seikosha shutters that I have fixed (or tried to fix), I believe the first few steps are to:
1. remove the top and bottom covers
2. peel back covering to find and remove the screws (usually 4) that hold the front standard plate on the camera body.
3. remove the ring nut (around the rear lens element) that holds the shutter assembly on the aluminum standard plate. Usually requires a lens spanner.
From there, it can vary considerably between different models and brands.
At any rate, you get at the blades from the back, not from the front.
I'm a patient guy, but fooling with shutter and aperture blades, and getting a camera back together, is almost more tedious a job than I can stand.
As I recall, I think if you search the forum's repair articles, you may find some photos of a Yashica Lynx undergoing this repair. |
Will_inoue
Tinkerer
Username: Will_inoue
Post Number: 2
Registered: 06-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 07, 2007 - 06:16 am: |
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Hi John, Thanks for your reply. On this camera I don't see any way to remove the lens/shutter assembly by peeling back the leatherette and removing the screws. This camera has a chrome metal plate that goes right up to the bodies casting. I'm certain the screws are under this metal plate (I can see the tapped bores inside the camera arrayed around the lens opening). See pictures below. Thanks again. -Will
http://img.villagephotos.com/p/2007-6/1262478/5191.JPG
http://img.villagephotos.com/p/2007-6/1262478/5192.JPG
http://img.villagephotos.com/p/2007-6/1262478/5193.JPG |
John_scott
Tinkerer
Username: John_scott
Post Number: 7
Registered: 08-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, June 08, 2007 - 12:52 am: |
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Will, I have never had a Ricoh like yours, but my best guess would be that the only thing holding the shutter assembly onto the body is the retaining ring/nut. I would start by using a lens spanner to unscrew the rear lens group, and then unscrewing the retaining ring/nut. I think the lens would come loose, and you can then continue disassembly to get at the blades.
Those ring-nuts can sometimes be pretty tight. If you don't have a proper lens spanner, it can be tough. But if you're lucky, it might not be so tight. |
Wernerjb
Tinkerer
Username: Wernerjb
Post Number: 157
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, June 08, 2007 - 01:59 am: |
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Old Ricohs are a bit oddly constructed, so I guess John is right. Your second photo looks similar to what I know from Ricoh 35 L models, it shows a kind of black collar deep down inside of which there must be that ring/retainer nut with usually two notches, sometimes four. For the different diameters of these ring nuts I have made myself a set of steel sheet tools just long enough to reach the grooves (cardboard models do the trick!). These tools can be held with pliers, and the square whole of the film window is wide enough to offer access to the nut, although one has to be very careful not to scratch anything. After carefully studying your photos I guess thet is the only way to remove the shutter, W. |
Pablomartinez
Tinkerer
Username: Pablomartinez
Post Number: 68
Registered: 09-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, June 08, 2007 - 04:31 am: |
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The Yashica Lynx have four screws under the leatherette.
My guess is that you have to remove the shutter back retainer ring. |
Will_inoue
Tinkerer
Username: Will_inoue
Post Number: 5
Registered: 06-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, June 08, 2007 - 03:37 pm: |
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Thanks Guys - I got it! There was a ring nut deep inside the collar as mentioned. Your help is very much appreciated! -Will |
