From John Lind in 2003
---------------------------------------------------------------
Date: Sun, 01 Jun 2003 21:40:56 -0400
From: "John A. Lind" <jlind@xxxxxxxxxxxx>
Subject: [OM] Fixed! OM-4 Stiff Shutter Speed Ring
Thanks to C.H. Ling for his tips and Mark Dapoz for his on-line manuals.
Carefully removed the lens flange, then very, very carefully removed the
shutter speed ring. Yep . . . gotta watch for the reset pin and spring
when pulling off the lens mounting flange. Cleaned the shutter speed ring
thoroughly, put a very tiny amount of white lithium grease on the detent
ball and extremely thin coating on the ring detents that mate with it, then
very carefully reassembled the lens mount.
Works smoother now than it ever has.
-- John
Date: Mon, 02 Jun 2003 01:30:31 -0400
From: "John A. Lind" <jlind@xxxxxxxxxxxx>
Subject: Re: [OM] Fixed! OM-4 Stiff Shutter Speed Ring
At 23:32 6/1/03, you wrote:
>In a message dated 6/1/2003 8:34:07 PM Central Standard Time,
>jlind@xxxxxxxxxxxx writes:
>
>>Works smoother now than it ever has
>
>
>John, Where do we send our OMs for repair? Should John H. and Clint look
>for part time work at the 7 Eleven? Were I attempting this I'd still be
>look for that ball bearing. Great to hear of your success. Bill Barber
Thanks Bill . . .
Before starting the "surgery" I had visions of trying to find the ball
bearing . . . or the spring and pin . . . during/after disassembly. The
spring almost got away as I was reassembling it.
Looked at the exploded parts view (thanks to Mark Dapoz) and made a
reassembly risk assessment. Disassembly isn't usually that hard; proper
reassembly can be very difficult. Akin to falling from a ladder; not the
fall that hurts; it's the sudden stop at the end. Took the risk as I want
three 35mm bodies on hand this next weekend for a wedding shoot; having a
fourth body as a spare makes me feel better.
Used a ring-light large magnifier on a stand and worked in a shallow tray
to limit things rolling off very far. The only tools required were a pair
of forceps (handling the pin and spring) and very small jewelers philips
driver. The critical part was watching the pin and spring, and ensuring
the registration of the shutter speed gear train at the bottom didn't get
out of whack.
The SS Ring only has the detents and a slot for a tab that mates with and
turns another ring under it . . . the second ring under the SS Ring has the
teeth that drive the SS gear in the bottom of the camera . . . and
fortunately it doesn't have to be removed (but it is loose at that point
and can fall out). Were it any deeper than removing the flange and SS
ring, or if cleaning and very judicious lubrication of the detent
bearing/surfaces hadn't solved the problem, it would have gone to one of
them. It's about as deep as I want to dig into one and [seriously]
**don't** want to do this routinely.
John H. has overhauled two bodies for me (he's closer than Clint) . . . did
great work on both.
Thanks,
-- John
Date: Mon, 2 Jun 2003 09:06:28 -0400
From: "John Hermanson" <omtech@xxxxxxxxx>
Subject: Re: [OM] Fixed! OM-4 Stiff Shutter Speed Ring
Luckily the bb on that model tends not to fly away. That job is left to the
spot switch and spring. Glad it worked out for you.
_________________________________
John Hermanson www.zuiko.com
Camtech, Olympus Sales & Service since 1977
21 South Lane, Huntington NY 11743-4714
631-424-2121 For Free Olympus manuals,
please call 1-800-221-3000
_________________________________
Chuck Norcutt
On 8/30/2011 4:52 AM, Brian Swale wrote:
> Hi,
>
> I have an OM4 of which the shutter speed ring is excessively stiff to turn.
>
> Is there a simple safe way for me to lubricate it myself, and what might that
> be? TIA.
>
> Brian Swale.
--
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