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[OM] Re: OM4t locked up

Subject: [OM] Re: OM4t locked up
From: Richard Smith <rsmith@xxxxxxxx>
Date: Mon, 03 Mar 2008 09:55:33 -0700
Thanks very much to all who responded to my email about the locked up 
OM4t.  I'm sending it off to JH. 
Richard

Chuck Norcutt wrote:
> Warning, long.  This is an old collection of notes on jammed cameras 
> from Clint, John, Mark and others
>
> Chuck Norcutt
> ------------------------------------------------------------
> Date: Mon, 30 Apr 2001 17:35:34 -0500
> From: clintonr@xxxxxxxxxxxxxxxx
> Subject: Re: [OM] -2s Problems
>
> There's a lever in the bottom of the OM-2s that stops the wind after one 
> frame.
> When it gets greasy, it lets the gears turn when the shouldn't, and that 
> results
> in "crossed gears" -- gear teeth on one gear catch teeth on another 
> where they
> shouldn't, and that jams the camera.  Eventually even "jiggling" won't 
> work --
> only removing the gears to unjam them, and cleaning the lever to prevent
> recurrance will solve the problem.
>
> Even though the OM-4/4t/3/3t all have the same mechanism, this seems to be a
> problem largely unique to the -2s -- evidentally the -2s factory just 
> used too
> much grease in the first place.
>
> Dave Bulger wrote:
>
>  > Zuiks,
>  >
>  > Input would be appreciated.
>  >
>  > I had my beloved -2s jam up on me a coupla years back -- couldn't advance
>  > film, couldn't trip the shutter.  Shutter was closed, mirror was 
> down.  This
>  > was despite moving the SS to manual, changing batteries, etc.
>  >
>  > Sent it to JH for a CLA at which time it was fixed & working beautifully.
>  >
>  > Gave the camera to a friend of mine recently when the exact same 
> situation
>  > arose.  I noticed a post on the list from someone (Thanks!) re putting a
>  > winder on it to see if the winder->camera linkage could be "jiggled" that
>  > way.
>  >
>  > Yup!  It worked.  I now have a correctly functioning -2s to return to 
> her.
>  >
>  > Is this a common thang with -2s's?  I seem to recall something about
>  > overwinding.  How does this happen, what can be done to prevent, etc?
>  >
>  > Thanks!
>  >
> * Dave
>
>
> Date: Tue, 1 May 2001 08:42:00 -0400
> From: "John Hermanson" <omtech@xxxxxxxxx>
> Subject: Re: [OM] -2s Problems
>
> When I get a 2s/3/4 with sluggish levers, I rebuild them, even if the camera
> didn't come in for jamming.  Without cleaning, it will definitely  jam
> eventually.
>
> John  Hermanson
>
>
> Date: Fri, 9 Aug 2002 11:32:42 -0400
> From: "John Hermanson" <omtech@xxxxxxxxx>
> Subject: Re: [OM] Magical cures for stuck rewind lever?
>
> The levers in the bottom get extra greasy.  They don't snap back fast enough
> to lock the wind mechanism after you wind the shutter, so you start to wind
> on before you fire the shutter.  "Good" news is the lever assembly that gets
> greasy is stamped shut at the factory.  You can drill the stamping out with
> a 7/64" drill, disassemble, degrease and  rebuild.
> _________________________________
> 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
> _________________________________
> - ----- Original Message -----
> From: <Pschings@xxxxxxx>
> To: <olympus@xxxxxxxxxxxxxxx>
> Cc: <NSURIT@xxxxxxx>
> Sent: Friday, August 09, 2002 9:47 AM
> Subject: Re: [OM] Magical cures for stuck rewind lever?
>
>
>  > In a message dated Fri, 9 Aug 2002 8:29:05 AM Eastern Standard Time,
> NSURIT writes:
>  >
>  > > I have an OM 2S that won't allow me to advance the film or >release the
> shutter.  The rewind button you depress to rewind your film appears to be
> stuck in the down position, which I'm sure is part of the problem.  Short of
> sending this body to the bone yard or in for a CLA, does anyone have any
> ideas that might allow me to cock the shutter/release the rewind button.  BB
>  >
>  > I have an OM-2S doing the same thing. My understanding is that it is
> "overwound". Check the archives, I posted this same question a few months
> ago. Apparently it's easy to release after removing the bottom cover, but it
> will need a CLA or it will keep happening. Mine's going to John H. as soon
> as funds are available.
>  >
>  > Paul Schings
>  >
>
>
>
>
> Date: Sun, 17 Mar 2002 22:09:01 -0500 (EST)
> From: Mark Dapoz <md@xxxxxxxxxxxx>
> Subject: Re: [OM] Sunday Outing, dead OM-2S :-(
>
> On Sun, 17 Mar 2002 Pschings@xxxxxxx wrote:
>
> Get to the zoo fairly early (9:30) - great, the place is empty. First 
> exhibit
> up is the zebras - set up a nice shot of the kids with the zebras in the
> background, fire the shutter on the OM-2S. Everything seems normal till 
> I try
> to advance - the wind lever won't budge, as if it was already advanced.
> Hmmmmm. No time to play with it. Rewind the film and shoot the rest of the
> morning with the OM-2n, which seems to perform as flawlessly as it looks (I
> think I may have to buy this one).
>
>   Anyone have any ideas what's wrong? The take up spool and sprocket move
>   freely (the rewind button is down and won't come back up). I tried 
> putting
>   the winder back on - no luck. The motor runs for a second as if it is
>   working, but the shutter doesn't fire and the take up and sprockets don't
>   turn. I'll take a look throught the archives when I get some time 
> tomorrow,
>   as I seem to recall something like this, or at least similar, being 
> common in
>   OM-2S's. I hope the fix is simple!
> ------------------------------------------------------------------------------------
>
> It's most likely overwound.  To fix it you'll have to remove the gear 
> cluster
> at the bottom of the camera and re-time the gears.  However, even if you do
> that, it'll probably jam again since you need to find the cause of the 
> problem.
> The most common cause of overwinding in a 2S is dirty levers.  The little
> levers around the bottom of the wind shaft get slow and that allows the
> wind shaft to travel too far.  A good flushing with a solvent such as 
> lighter
> fluid or methanol usually cleans it up.
>                                  -mark
>
>
> Date: Wed, 9 Oct 2002 08:29:11 -0400
> From: "John Hermanson" <omtech@xxxxxxxxx>
> Subject: Re: [OM] OM-2sp service question
>
> It's common for 2S thru 4Ti to develop overgreasesd wind latches in the
> bottom, but the resulting jam up usually doesn't require the body to be in
> any special position.  Take the bottom off and see if anything falls out.
> _________________________________
> 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
> _________________________________
> - ----- Original Message -----
> From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxx>
> To: "Olympus mail list" <olympus@xxxxxxxxxxxxxxx>
> Sent: Sunday, October 06, 2002 4:50 PM
> Subject: [OM] OM-2sp service question
>
>
>
>  > I have a spare OM-2sp that I bought from a listie some long time ago.
>  > Since I didn't really need it it sat in a drawer for the first 3 or 4
>  > months until I finally decided to run a roll of film through it.  When I
>  > was using it I periodically noticed that I had difficulty winding it.
>  > The wind lever seemed to be jammed but after fussing about doing random
>  > things it would eventually wind on as though nothing happened.  I
>  > installed new batteries toward the end of the roll and had no further
>  > problems.  I attributed the problem to bad batteries and after removing
>  > the batteries for storage put the camera back in the drawer.
>  >
>  > Now its been back in the drawer again for the past year.  However, I'm
>  > seriously contemplating having my original 2sp CLA'd and so I took the
>  > other one out again today to try it out and limber it up.  Since it
>  > didn't have batteries in it I couldn't resist trying it out on manual
>  > 1/60.  It came to life immediately and fired off about six shots OK when
>  > all of a sudden I couldn't wind it.  Like before I did a bunch of
>  > random, useless things and suddenly it was OK again.  Well, clearly it
>  > wasn't batteries since none are required in manual.  To make a long
>  > story short, after some experimentation I discovered:
>  >
>  > If the camera is pointing face down or is upside down the wind lever is
>  > locked.  If the camera is pointing face up or face forward the wind
>  > lever is free.  What's the prognosis here?  Do I have a loose screw or
>  > other part rolling around in the wind gears?  I guess I could pull the
>  > bottom plate easily enough but I haven't attempted that yet.
>  >
>  > Chuck Norcutt
> * Woburn, Massachusetts, USA
>
> Date: Wed, 9 Oct 2002 09:00:01 -0400
> From: "John Hermanson" <omtech@xxxxxxxxx>
> Subject: Re: [OM] OM-2sp service question
>
> It should snap back.  You can take that assembly apart but it is riveted
> shut.  Take out large screw, drill out stamping with 7/64" drill Only a
> LITTLE dripping is needed.  Take all levers out, degrease, rebuild.  Screw
> and spacers are self centering.
> _________________________________
> 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
> _________________________________
> - ----- Original Message -----
> From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxx>
> To: "Olympus mail list" <olympus@xxxxxxxxxxxxxxx>;
> <clintonr@xxxxxxxxxxxxxxxx>
> Sent: Monday, October 07, 2002 10:43 PM
> Subject: Re: [OM] OM-2sp service question
>
>
>
>  > I think the "directional aspect is not only unusual but key to this
>  > problem.  I removed the bottom cover and checked the levers.  The
>  > potentially suspect one is not blazingly quick and perhaps needs
>  > cleaning but I don't think it's at all related to this problem.
>  >
>  > I'll reiterate that with the camera pointing up or forward the wind
>  > lever works normally 100% of the time.  With the camera pointed down or
>  > upside down the wind lever works 0% of the time.  If the wind lever will
>  > not wind simply rotate camera to appropriate position and then it will
>  > wind normally provided you first release any pressure on the lever.
>  >
>  > I also discovered that, if the camera is pointed up, the wind lever will
>  > wind normally but the lever will only return half way before it gets
>  > blocked by something.  Return camera to facing forward position and wind
>  > lever will return the rest of the way.
>  >
>  > The behavior is as though there's a small pin or screw floating around
>  > inside which manages to block a gear or linkgage when it's in the right
>  > position.  However, I can't see any such thing with the bottom cover
>  > removed which implies something at the top.  Given the additional
>  > problem of not being able to fully return the wind lever when the camera
>  > is facing up it would seem that perhaps the detent mechanism that holds
>  > the wind lever in the half cocked position is somehow involved.  When
>  > the wind lever won't return it is in exactly the half cocked position
>  > where there is normally only a slight detent.
>  >
>  > Have I made the first discovery of the "out of control detent mechanism"?
>  >
>  > Thanks,
>  > Chuck Norcutt
> * Woburn, Massachusetts, USA
>
>
> Date: Thu, 10 Oct 2002 13:09:09 -0500
> From: clintonr@xxxxxxxxxxxxxxxx
> Subject: Re: [OM] sticky wind lever
>
> Just under the wind levers of the 4/4t/2s/3/3t/et al are two ball 
> bearings that
> provide the "offset" detent of the wind lever -- the "click" where the wind
> lever is held out away from the body a little before it begins winding the
> film.  If those balls, or more importantly the frame they sit in (they're
> supposed to be stainless -- the frame is steel), get moist, they rust. 
> If you
> want to try it, you can gently pry off the plastic cap over the top of 
> the wind
> lever (glue it back with three little dots of contact cement), and 
> remove the
> screw underneath.  Under the wind lever is a spacer and two ball bearings --
> don't loose them!  They're probably a bit corroded -- if so, clean them 
> and the
> frame they sit in, then put a bit of grease in the holes where they sit 
> (a pin
> head will do, any kind of bearing grease will do fine, too) and replace.
>
> William Sommerwerck wrote:
>
>
>  > The wind lever on my black OM-4T is a bit "sticky-rough" at the 
> beginning of
>  > the wind, while the lever on my champagne OM-4T is smooth.
>
>
>
> Given the circumstances (extreme cold) I would also suspect jamming by
> overwind -- when the grease on the levers beside the battery chamber gets
> thick, they can't operate to stop the wind when they should.  As a result,
> the gears "overwind" and jam the shutter.  In this case, though, the meter
> will usually operate.  Warming will have no effect -- only disassembly of
> the gear train and subsequent removal of the excessive lubrication on those
> levers will correct the problem and prevent a repeat performance.
>
> Another possibility (though not usually related to cold) would be if the MD
> switch (unlike other OM's, it's located beneath the mirror) hung up the
> inertia retard that slows the mirror lifting to provide time for the program
> mechanism to operate.  This is another malady that would need professional
> attention for a reliable solution.
>
> Address all shipments and postal correspondence to:
>
> Photosphere
> 2510 Electronic Ln. #907
> Dallas, TX   75220
> U.S.A.
>
>
>
> Too much grease, thickening of grease on the latches next to the battery box
> in the 2S, 3, 3Ti, 4, 4T, 4Ti.  The latches should be snappy and completely
> bone dry, so as the wind stack comes around after a complete wind cycle,
> they snap into the stop hole and prevent a second partial wind cycle.  The
> first wind gear catches the second gear at the wrong start point,, as you
> continued to wind, they get to a point where they can't turn anymore.
> Bingo, wind mech jammed.
> ----------------------------------------------------
> John Hermanson  www.zuiko.com
> mail:  omtech@xxxxxxxxx
> Camtech Photo Services, Inc.
> 21 South Lane, Huntington NY 11743-4714
> 631-424-2121  Turnaround 5-7 weeks
>
> ------------------------------------------------------------------
>
>
> Richard Smith wrote:
>   
>> I've been using a Canon 20D a lot for the past 3 years, and have 
>> neglected the OM4t except for backpacking trips.  Yesterday I got out 
>> the Olympus to use up some of the film that's been  in the cooler.  I 
>> loaded and advanced the film, and the shutter locked up.  I removed the 
>> film and tried everything I know of and still can't get the shutter to 
>> operate correctly.  I think the batteries are OK.  Any ideas? Thanks.
>> Dick Smith
>>
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>>
>>
>>     
>
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>   


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