Good job!
___________________________________
John Hermanson | CPS, Inc.
21 South Ln., Huntington NY 11743
631-424-2121 | www.zuiko.com
Olympus OM Service since 1977
Gallery: www.zuiko.com/album/index.html
iwert bernakiewicz wrote:
> Well, I opened the lens,
>
> To get to the mechanism a total dismantling was needed, luckily the
> pen F lenses are
> made in good fashion. I cleaned the mechanism but the brass ring
> inside the alumiunum
> housing was still stiff when closing the aperture from about f4-f16.
> I looked at the mechanism and could not discover anything strange. The fitting
> of the brass and aluminum should not be greased I think, since there
> is a huge contact
> surface (it is a very thick, about 1,5cm) ring and the grease would be more
> like glue :).
>
> So after looking cerafully from all sides what could be the problem
> the only cause
> could be something with the opening in the aluminum to get the
> aperture linking lever
> to the aperture ring where the brass ring always had resistance. First
> I thought some parts might
> be out of round causing the resistance. But looking with a looking
> glass I discovered
> a very, very small metal burr at one edge of the opening in the aluminum.
> I removed this carefully and softened the edge a bit, et voila, problem
> solved.
>
> In a way I'm happy I opened up the lens, since it was apparently servised
> before
> and rather greasy inside, and the last "repairman" left blobs of black paint
> on almost every screw which was now coming off and starting to find
> its way inside the lens.
>
> Also when dismantling the lens the front element assembly was very
> loose in it's fitting
> and now sits snug and tight again.
>
> So this beauty is ready for use again :) no images of the repair
> process, but just for beauty and in honor
> of Maitani-San:
>
> <http://picasaweb.google.com/zuikooh/PenFV?authkey=Gv1sRgCIrtu_CbwNqqCQ&feat=directlink>
>
> Iwert
>
> 2009/8/5 Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>:
>> It sounds to me like the inner part of the ring and the detent ball need
>> to be cleaned and lubed. But that doesn't tell you how to get to the ring.
>>
>> Chuck Norcutt
>>
>> iwert bernakiewicz wrote:
>>> Hello everybody,
>>>
>>> after succesful recalibration of my Pen FT meter by carefull wigling
>>> of the speed knob,
>>> I'm looking for a solution to a problem my 60mm f1.5 developed:
>>>
>>> The aperture ring is stiff between f4 and F11, aperture is dry and snappy.
>>> It is an FT lens so with the reversible scale. I have an exploded view
>>> diagramm
>>> from the book of John Foster (biofos), but that shows the first "F
>>> version" of the lens.
>>>
>>> Question is how to get at the ring? I suppose a carefull cleaning of
>>> the inner parts
>>> of the ring will do, but don't know how to get at it (and I'm not in a
>>> mood to experiment
>>> with this lens :)
>>>
>>> Many thanks for any advice,
>>>
>>> Iwert
>> --
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>>
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