Guest Ron (Netherlands) Posted February 8, 2009 Share #1 Posted February 8, 2009 Advertisement (gone after registration) While I am cleaning and lubing my IIIf, I have to correct several faults which the camera had when I bought it: it seems the camera was CLA’d rather roughly by a bad amateur since there was dripping some oil from the base, so first I had to clean the inside of the camera. Next the camera doesn’t engage the slow speeds. I think this will be corrected once the slow speed escapement is cleaned and lubed and the shutter springs are tensioned well. Third problem which I have to encounter but where I am a bit puzzled: when turning the winding knob, it eventually tensions the shutter, however before doing that, you can turn the winding know almost a whole circle before it catches on the film-sprocket and starts winding the shutter. The film sprocket has also a screw into it which doesn’t seem original to me (see photo's), however since I do not have a camera with the same kind of sprocket, I can’t compare it. Anybody a clue? I may be helped if someone can place some pictures of the film sprocket of his/her IIIf. thanks Link to post Share on other sites More sharing options...
Advertisement Posted February 8, 2009 Posted February 8, 2009 Hi Guest Ron (Netherlands), Take a look here CLA Leica IIIf. I'm sure you'll find what you were looking for!
jc_braconi Posted February 8, 2009 Share #2 Posted February 8, 2009 Ron, I have the book from National (US)Camera Repair School course about repairing IIIf, I will check and try to find answers. Link to post Share on other sites More sharing options...
Guest Ron (Netherlands) Posted February 8, 2009 Share #3 Posted February 8, 2009 Well, in the mean time I learned that the screw is original and is supposed to be where it is on the photo. I also can tell more specifically where the problem seems to occure: in the below picture, the part of the film sprocket assigned with nr. "1" turns freely for half a turn before part "2" catches up. See picture. In my other LTM Leica's (IIIc) the sprocket part nr. "2" immediately catches up with nr. "1" if the shutter is wound. Link to post Share on other sites More sharing options...
jc_braconi Posted February 10, 2009 Share #4 Posted February 10, 2009 Ron, I found that this can be more informative for you at a low price IIIf Link to post Share on other sites More sharing options...
Guest Ron (Netherlands) Posted February 10, 2009 Share #5 Posted February 10, 2009 Ron, I found that this can be more informative for you at a low price IIIf Thanks jc, I found out that in that particular manual there is only a 3D drawing of the film sprocket, however still usefull when I will dismantel the sprocket (I have a copy of the original Leitz manual). Link to post Share on other sites More sharing options...
Guest Ron (Netherlands) Posted February 10, 2009 Share #6 Posted February 10, 2009 Here is the 3D (exploded view) that I found of the sprocket: Link to post Share on other sites More sharing options...
ray*j*gun Posted February 10, 2009 Share #7 Posted February 10, 2009 Advertisement (gone after registration) I'm interested in the final resolution of this problem as well. Thanks. Ray Link to post Share on other sites More sharing options...
jhild Posted February 10, 2009 Share #8 Posted February 10, 2009 Well, my English isn´t the best but I will try it. I have CLA´d a number of srew mounts as well and had the problem with the "partly free turning winding on knob" just like you. The reason was always the same, the rewind lever was a bit loose and therefore the camera was something like half in rewind mode. Once I found out about this it never happened again. Just check the little srew fixing the rewind lever and tighten it a bit. I never dismanteled the film sprocket, I believe that´s not necessary for an ordinary CLA. Good luck Jo Link to post Share on other sites More sharing options...
jc_braconi Posted February 10, 2009 Share #9 Posted February 10, 2009 Ron, the book I have is 80 page with text and picts I scanned 2 page and you will tell me if it is helping or not. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/76313-cla-leica-iiif/?do=findComment&comment=805380'>More sharing options...
Guest Ron (Netherlands) Posted February 10, 2009 Share #10 Posted February 10, 2009 Well, my English isn´t the best but I will try it. I have CLA´d a number of srew mounts as welland had the problem with the "partly free turning winding on knob" just like you. The reason was always the same, the rewind lever was a bit loose and therefore the camera was something like half in rewind mode. Once I found out about this it never happened again. Just check the little srew fixing the rewind lever and tighten it a bit. I never dismanteled the film sprocket, I believe that´s not necessary for an ordinary CLA. Good luck Jo PROBLEM FIXED!!!!, thank you all for your responses. Although the problem seemed to occur in the upper part of the sprocket, it actually had to do with the below part, i.e. the part with the engaging pin and below that, there is a round part with the ball bearings (kugellager). When firing the shutter, I saw in my other screwmount Leicas, that the ball bearing part has to swing (spin) freely around when the shutter fired. In my IIIf however the part only turned in part and knocked the sprocket away from its starting position, therefore the above part of the sprocket could not catch up anymore with the below (large) part. When I removed the old grease on the ball bearing part, it started to spin freely, and hence the sprocket was not knocked away anymore. Glad I could fix it without taking the sprocket apart. Thank you JC, indeed the statement in your book exactly refers to this problem: cleaning and lubing the bearings at the bottom plate as well (which I hadn't done yet, fixed the problem (first time I saw that there were actually ball bearings below the sprocket!). I also had this question posted on the rff forum where someone also suggested to clean the below part of the bearings. btw that is a very nice and handy book you have there JC! Link to post Share on other sites More sharing options...
jc_braconi Posted February 11, 2009 Share #11 Posted February 11, 2009 Fine, if you need more informations, just let me know. Link to post Share on other sites More sharing options...
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