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Re: LBClutchless in Cal

To: "Ptegler" <ptegler@gouldfo.com>, "Clayton La Baw" <clabaw@jpl.nasa.gov>, <spridgets@autox.team.net>
Subject: Re: LBClutchless in Cal
Date: Fri, 29 Jun 2001 08:46:24 -0700
References: <4.2.2.20010628111148.02d72100@mail1.jpl.nasa.gov>
Paul -

Could it be a conspiracy?  Equip Spridgets with POS clutch 
cylinders?  What's next?  This is worse than computer viruses!

Clay L.
'67 Sprite

At 02:44 PM 6/28/01 -0400, Ptegler wrote:
>...don't know about the casting marks offhand...
>but your description of the innards sound like the less than one year
>old, 500 mile max, cyl that just failed on me too!
>...The one I was just bitching about ,about a week ago
>that had scratched itself up inside.
>
>No circlip, only one seal round the middle of the piston
>in a groove and a single large diameter spring down in the bore
>below the piston.
>
>Paul Tegler     ptegler@gouldfo.com    www.teglerizer.com
>
>----- Original Message -----
>From: "Clayton La Baw" <clabaw@jpl.nasa.gov>
>To: <spridgets@autox.team.net>
>Sent: Thursday, June 28, 2001 2:16 PM
>Subject: LBClutchless in Cal
>
>
>Spridgeteers -
>
>I recently had a catastrophic loss of clutch function while on a drive.
>It's amazing how well a really 'used' ribcase works without a clutch. After
>getting side tracked by a front brake problem that ended up going all the
>way to a trunnion rebuild (many dismal war stories there!), I got to the
>slave cylinder on Tuesday last.  To say that the bellows was "perished" is
>to do the word a disservice.  The slave cylinder had only one mounting bolt
>in place.  After removing the (bent) clevis pin, the pushrod fell off on
>the floor.   I removed the remaining mounting bolt and the rest of the
>cylinder dropped down, hanging from the flex hose.  I got it onto the bench
>and found that the inner end of the pushrod had been forced into the hex
>cavity of a half-inch diameter by half inch length set screw.  This rested
>on top of a 5/8" diameter by half inch long set screw which, in turn, sat
>in the conical cavity of the piston.  There was no circlip, the bellows
>(formerly) being the only thing holding this all together.  Pulling the
>piston, I found that it was a 'groove-seal' type and that no "cup" was
>present.  Also, a two-inch long (free length) coil spring was below the
>piston and no cup filler was installed.  The cylinder has a two-row cast-in
>marking: 3233-237C over Q251.  It appears that the DPO or his designated
>paid representative, came up with a hybrid 1275/1500 assembly.
>
>I had neglected this area before 'cuz the clutch worked fine, up to the
>point of failure, and there were many other demons to chase.
>
>Now my question.  After replacing the slave cylinder, I'll bleed the system
>per the Haynes manual.  Regarding paragraph 2.1, what do I need to know
>about the "clean jam jar"?  Flavor? Size? Brand?
>
>Clay L.
>'67 Sprite



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