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Re: [Mgs] bad clutch or?

To: "Bert Palte" <palte@gmx.net>, "dave" <dave@ranteer.com>, <mgs@autox.team.net>
Subject: Re: [Mgs] bad clutch or?
From: PaulHunt73 via Mgs <mgs@autox.team.net>
Date: Tue, 28 May 2019 08:43:48 +0100 vYL5auHb9/uGThB2HxDHxFI+55M3AxNMz4Gf/22gGbYlTgdmbg5ppF3lNC8eLXpglKlhUjZcH1kFoFHGXWl0twK7iQm2LSpWVRs=
Delivered-to: mharc@autox.team.net
Delivered-to: mgs@autox.team.net
References: <F8B542C8-38BD-441E-85CF-F848F283896A@mgcarclub.com> <FA53D47CDBFA40CBA9C6FA3E1DA49CFF@paul> <006501d50f39$fa9a8200$efcf8600$@ranteer.com> <2ED0BFE96C2949DABE8CDC03F49EF0E8@FrankPC> <004601d513fa$cb279ba0$6176d2e0$@ranteer.com> <0c947dc3-8efe-5128-40c0-657e829bd442@gmx.net>
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Unlike physical wear at the pedal linkage, similar wear at the slave end =
has no effect on clutch operation, the hydraulic system is designed to =
take account of all wear at the clutch end.  Remember the graphite =
release bearing is going to wear down by a 1/4" or so over the life of =
the clutch, and given the unequal lengths of the release arm that is =
going to be getting on for an inch at the slave cylinder.  The piston =
simply moves out to take it up, and more fluid back-fills from the =
reservoir.

If it's dragging exactly the same as before, and you have about 1/2" of =
travel of the slave push-rod, then something is binding at the clutch.  =
Either the friction plate is very stiff on its splines, or the end of =
the first-motion shaft is dragging badly in the pilot bearing.  Could =
also be the release bearing breaking up and not pushing evenly on the =
cover plate.  Time to pull the engine - much easier than pulling both - =
on an MGB at least.

PaulH.
  ----- Original Message -----=20


    Replaced the clutch hose and the slave.  Still not shifting.



    When you push in the clutch, the lever arm on the trans moves a =
decent amount.  I didn=E2=80=99t measure it, but its probably =
=C2=BD=E2=80=9D to =C2=BE=E2=80=9D, something like that. =20

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<DIV><FONT size=3D2>Unlike physical wear at the pedal linkage, similar =
wear at the=20
slave&nbsp;end has no effect on clutch operation, the hydraulic system =
is=20
designed to take account of all wear at the clutch end.&nbsp; Remember =
the=20
graphite release bearing is going to wear down by a 1/4" or so over the =
life of=20
the clutch, and given the unequal lengths of the release arm that is =
going to be=20
getting on for an inch at the slave cylinder.&nbsp; The piston simply =
moves out=20
to take it up, and more fluid back-fills from the =
reservoir.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>If it's dragging exactly the same as before, and you =
have=20
about 1/2" of travel of the slave push-rod, then something is =
binding&nbsp;at=20
the clutch.&nbsp; Either the friction plate is very stiff on its =
splines, or the=20
end of the first-motion shaft is dragging badly in the pilot =
bearing.&nbsp;=20
Could also be the release bearing breaking up and not pushing evenly on =
the=20
cover plate.&nbsp;&nbsp;Time to pull the engine - much easier than =
pulling both=20
- on an MGB at least.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>PaulH.</FONT></DIV>
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  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
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    <P class=3DMsoNormal>Replaced the clutch hose and the slave.&nbsp; =
Still not=20
    shifting.<O:P></O:P></P>
    <P class=3DMsoNormal><FONT size=3D2 =
face=3DArial></FONT><O:P></O:P></P>
    <P class=3DMsoNormal>When you push in the clutch, the lever arm on =
the trans=20
    moves a decent amount.&nbsp; I didn=E2=80=99t measure it, but its =
probably =C2=BD=E2=80=9D to =C2=BE=E2=80=9D,=20
    something like that.&nbsp;=20
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