| Author |
Message |
Denny
New member
Username: Denny
Post Number: 37
Registered: 08-2009
| | Posted on Friday, June 04, 2010 - 05:55 pm: | 
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I recently acquired a very clean Yashicamat EM. Everything appears to be in excellent condition EXCEPT I had issues with the winding mechanism. After searching these forums I bravely opened up the side and cleaned. The main item seemed to be the racheting on winder wouldn't always engage after cocking and releasing the shutter. It would free wheel. There is a small gap in what I believe is the rachet assembly and its cover plate. A small squirt of QD Electronics Cleaner immediately improved the condition.
Upon further testing, it would still not catch sometimes, but much less frequently. I gave it another small sip of QD.
The question is, does this require lubrication, or once cleaned and operating freely, will it be ok to operate dry.
I would appreciate hearing from anyone that has had a similar experience. As always thanks in advance for the great knowledge so willingly shared on this forum.
Thanks
Denny |
Denny
New member
Username: Denny
Post Number: 39
Registered: 08-2009
| | Posted on Thursday, July 01, 2010 - 04:55 pm: |
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Thought I'd bump this as there are a lot of knowledgable folk on the LM issues and might have experience with this one as well.
Thanks in advance.
Denny |
Mareklew
New member
Username: Mareklew
Post Number: 122
Registered: 03-2010
| | Posted on Friday, July 02, 2010 - 10:33 am: |
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Take a picture, post it on imageshack.us and give a link, we'll talk.
Marek |
Denny
New member
Username: Denny
Post Number: 40
Registered: 08-2009
| | Posted on Thursday, July 15, 2010 - 07:58 pm: |
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I've been pretty sidetracked the last couple of weeks. Here is a photo of the progress to date. I haven't disassembled the actual ratchet and would like to avoid doing so unless necessary.
http://farm5.static.flickr.com/4096/4797740265_90458ff1ca_b.jpg
Thanks for any opinions.
Denny |
Mareklew
New member
Username: Mareklew
Post Number: 148
Registered: 03-2010
| | Posted on Saturday, July 17, 2010 - 03:14 pm: |
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Do take it apart. The crank axle ratchet assembly isn't all that complicated and it goes together rather easy. Just take notes about the order of rings and screws as you take them out.
The crank connects to the mechanics only through cogwheels.
greets,
Marek |
Denny
New member
Username: Denny
Post Number: 41
Registered: 08-2009
| | Posted on Saturday, July 17, 2010 - 08:41 pm: |
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Thanks Marek. After I remove the two plates and expose the ratchet claws, I imagine that should be cleaned up and reassembled. Do I place any lubricant in the ratchet assembly or leave it dry?
I do have a good exploded view of that side of camera to guide me through the disassembly/assembly.
Thanks again |
Mareklew
New member
Username: Mareklew
Post Number: 149
Registered: 03-2010
| | Posted on Sunday, July 18, 2010 - 12:19 am: |
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I use some heavy grease, like vaseline, to treat the ratchet. The springs there are actually strong enough (at least in my Mat and 124G) to deal with even pretty thick grease, they just fail if the grease solidifies.
Under the outer plate:
http://img839.imageshack.us/img839/1895/201005032122165699web.jpg
http://img830.imageshack.us/img830/6416/201005032122215700web.jpg
To disassemble it further you have to take the complete winding assy plate out and unscrew some small screws on the other side of this ratchet.
Marek |
Denny
New member
Username: Denny
Post Number: 42
Registered: 08-2009
| | Posted on Sunday, July 18, 2010 - 05:27 am: |
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Marek - Your photos are very helpful. I am going to remove the nut, two plates and spacer this afternoon.
Thanks again. |
Didden
New member
Username: Didden
Post Number: 2
Registered: 08-2009
| | Posted on Saturday, August 28, 2010 - 05:25 pm: |
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I have a Yashica LM that has the knob advance but when I am loading film it winds ok but fails to engage at 1 and just keeps winding. Sounds like this could be a similar problem that may the grease is causing it to not engauge. Would seem to be the right observation as I have not taken the side off yet.
thanks
dennis |
