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Re: Clutch

To: Larry A Hoy <mgb.roadster@juno.com>
Subject: Re: Clutch
From: "Craig H. Brallier" <brallier@twd.net>
Date: Wed, 01 Oct 1997 11:04:41 -0700
Larry,
Thanks for the tip.  I am planning to change the master cylinder 
and replace the clevis pin instead of rebuilding the mc so that should 
eliminate one pivot point as a problem, assuming the pedal linkage holes 
are not slopped out.  I wasn't thinking about the other pivot points.  
However, you can't check the pushrod in the slave cylinder and fork 
pivots without pulling the engine can you?  Also, being a pessimist, 
assuming this doesn't cure my problem, how do you know when the throwout 
bearing is gone or does it generally outlast the clutch?

TIA

Craig
75 B
76 B
Larry A Hoy wrote:
> 
> Jeff and Craig, one thing you guys should check is all the clutch
> mechanical linkage.  There are about four, maybe more, spots where you
> can expect wear in the linkage.  Check where the clutch pedal pivots, and
> check the linkage to the clutch master cylinder.  Also check the rod with
> the eye in it that comes out of the slave cylinder; and the fork that
> actuates the throw out bearing.  These spots have a tendency to wear, the
> pivot holes get egg shaped instead of round and the pins tend to wear
> also.  The sum total of the wear causes the pedal movement to be less
> than adequate.
> 
> Good luck.
> 
> Larry Hoy (MGB.Roadster@juno.com)
> Denver, CO USA
> 1969 MGB Roadster
> 1987 Jaguar XJ6 Vanden Plas
> ===============================
> 
> On Sun, 28 Sep 1997 09:33:17 -0700 "Craig H. Brallier" <brallier@twd.net>
> writes:
> >Jeff Boatright wrote:
> >>
> >> My clutch seems to be releasing just as I bring my foot back from the
> full
> >> extension of the pedal travel (that is, the gear seems to be fully
> engaged
> >> almost as soon as I begin to pull my foot back from the firewall).
> I've
> >> just installed a new clutch line and bled the system. Prior to this,
> the
> >> engaging of the gear was much smoother and seemed to require much more
> >> pedal travel. Could this new "feel" be due to air in the lines?
> Conversely,
> >> is the new feel the proper situtation, meaning that the old feel was
> due to
> >> air in the lines or all the crud in the MC that I cleaned out?
> >>
> >> Thanks in advance,
> >>
> >> Jeff
> >>
> >> ____________________________________________________________
> >> Jeff Boatright          __o_\__            '65(!) A-H Sprite
> >> http://userwww.service.emory.edu/~jboatri/sprite/sprite.html
> >
> >Jeff,
> >My 75 B acts the same way.  The clutch starts engaging almost as soon as
> 
> >you release the pedal.  I tried bleeding the slave cylinder but that
> >didn't make any difference.  So I have been assuming it was the throwout
> 
> >bearing going and figured I would replace it when I could no longer
> shift
> >the transmission.
> >
> >Then a new problem.  Brake fluid leaking out of the clutch master
> >cylinder on my foot.  So a new master cylinder is on the schedule.
> >Hopefully this will cure both problems.
> >
> >Craig
> >75 B - with wet left foot
> >76 B
> >

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