Olympus-OM
[Top] [All Lists]

Re: [OM] Tinkering with a f1.8 Zuiko

Subject: Re: [OM] Tinkering with a f1.8 Zuiko
From: John Hermanson <omtech1@xxxxxxxxxxx>
Date: Fri, 20 Nov 2009 08:20:05 -0500
Also very important to make sure the slots on the mount are degreased. 
Word of warning on the brown finish of the coupling rings.  This is 
applied as a slippery coat and over enthusiastic cleaning will remove it 
and possibly make the diaphragm blades sluggish all by themselves.
___________________________________
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


Russ Butler wrote:
> NSURIT@xxxxxxx wrote:
>> If I have something worth fixing it goes to Camtech, however I just  
>> received a 50mm f1.8 and the aperture blades will not move on at all and 
>> also a  
>> 28mm f2.8 that has slow aperture blades.  Neither of these are lens upon  
>> which I would pay to have a CLA.  Any words of advice from those who have  
>> traveled this road about traps to be aware of when opening these guys up?   
>> What 
>> method works best for getting the blades cleaned and working.  I might  
>> mention the the 28mm doesn't appear to have any oil on the blades.  They  
>> are 
>> just really slow.  Bill Barber
> 
> I had really good luck on a 50/1.8 & 50/1.4.
> 
> First I gently heated the lens with a hair dryer to see if gummed up 
> lube might be the problem. It was on these two lenses as the blades were 
> less sticky when warm.
> 
> So I removed the base of the lens and applied some CRC QD Electronic 
> Cleaner using very tiny "Microbrush" brushes I bought at a local hobby 
> store. (The tips are ~1mm diam x 2mm long). iirc (it's been a few years) 
> I just applied the "QD" a tad here and there to where I figured the lube 
> had gummed up over the years, worked the blades and repeated a few 
> times. The QD apparently redissolved &/or redistributed the original 
> lubricant.
> 
> Worked for me. YMMV.
> 
-- 
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/

<Prev in Thread] Current Thread [Next in Thread>
Sponsored by Tako
Impressum | Datenschutz