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30 million miles is decent wear for an MG clutch, I'd say..... ;-)
Dan D
Central NJ USA
http://dandibiase.cbintouch.com/
On Tue, May 28, 2019 at 10:18 PM Robert's New iPad via Mgs <
mgs@autox.team.net> wrote:
> I have recently removed the engine to answer the question of friction
> plate binding. It was.
> That same rusty powder that appears around dry door hinges in a hose wa=
s
> present on the area around the plate=E2=80=99s splines. Pushing and pull=
ing by
> hand, the plate would not slide smoothly on its splines. It had been
> installed ten years and 30M miles ago.
> I checked the bushing on throw-out lever, the pivot bolt also, which
> were fine. The throw-out bearing measured a couple of thousands _thicker_
> than a new one, so I used the old again, but bought a new AP friction pla=
te
> even though the old appeared, aside from the rust powder, almost unworn.
> Difficult shifting is now history.
> Bob
>
>
>
> On May 28, 2019, at 3:43 AM, PaulHunt73 via Mgs <mgs@autox.team.net>
> wrote:
>
> 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 ta=
ke
> 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 ou=
t
> 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 M=
GB
> at least.
>
> PaulH.
>
> ----- Original Message -----
>
> 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.
>
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>
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>
> Mgs@autox.team.net
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<div dir=3D"ltr">30 million miles is decent wear for an MG clutch, I'd =
say..... ;-)<div><br></div><div>Dan D</div><div>Central NJ USA<br clear=3D"=
all"><div><div dir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D"gmai=
l_signature"><div dir=3D"ltr"><a href=3D"http://dandibiase.cbintouch.com/"; =
target=3D"_blank">http://dandibiase.cbintouch.com/</a></div></div></div><br=
></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail=
_attr">On Tue, May 28, 2019 at 10:18 PM Robert's New iPad via Mgs <<=
a href=3D"mailto:mgs@autox.team.net";>mgs@autox.team.net</a>> wrote:<br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bo=
rder-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"auto"><d=
iv dir=3D"ltr"></div><div dir=3D"ltr">=C2=A0 I have recently removed the en=
gine to answer the question of friction plate binding.=C2=A0 It was.</div><=
div dir=3D"ltr">=C2=A0 That same rusty powder that appears around dry door =
hinges in a hose was present on the area around the plate=E2=80=99s splines=
.=C2=A0 Pushing and pulling by hand, the plate would not slide smoothly on =
its splines.=C2=A0 It had been installed ten years and 30M miles ago.</div>=
<div dir=3D"ltr">=C2=A0 I checked the bushing on throw-out lever, the pivot=
bolt also, which were fine. The throw-out bearing measured a couple of tho=
usands _thicker_ than a new one, so I used the old again, but bought a new =
AP friction plate even though the old appeared, aside from the rust powder,=
almost unworn.=C2=A0</div><div dir=3D"ltr">=C2=A0 Difficult shifting is no=
w history.</div><div dir=3D"ltr">Bob</div><div dir=3D"ltr"><br></div><div d=
ir=3D"ltr">=C2=A0</div><div dir=3D"ltr"><br>On May 28, 2019, at 3:43 AM, Pa=
ulHunt73 via Mgs <<a href=3D"mailto:mgs@autox.team.net"; target=3D"_blank=
">mgs@autox.team.net</a>> wrote:<br><br></div><blockquote type=3D"cite">=
<div dir=3D"ltr">
<div><font size=3D"2">Unlike physical wear at the pedal linkage, similar we=
ar at the=20
slave=C2=A0end has no effect on clutch operation, the hydraulic system is=
=20
designed to take account of all wear at the clutch end.=C2=A0 Remember the=
=20
graphite release bearing is going to wear down by a 1/4" or so over th=
e 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.=C2=A0 The piston simply moves=
out=20
to take it up, and more fluid back-fills from the reservoir.</font></div>
<div><font size=3D"2"></font>=C2=A0</div>
<div><font size=3D"2">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=
=C2=A0at=20
the clutch.=C2=A0 Either the friction plate is very stiff on its splines, o=
r the=20
end of the first-motion shaft is dragging badly in the pilot bearing.=C2=A0=
=20
Could also be the release bearing breaking up and not pushing evenly on the=
=20
cover plate.=C2=A0=C2=A0Time to pull the engine - much easier than pulling =
both=20
- on an MGB at least.</font></div>
<div><font size=3D"2"></font>=C2=A0</div>
<div><font size=3D"2">PaulH.</font></div>
<blockquote style=3D"border-left:2px solid rgb(0,0,0);padding-left:5px;padd=
ing-right:0px;margin-left:5px;margin-right:0px">
<div style=3D"font:10pt arial">----- Original Message ----- </div>
<blockquote type=3D"cite">
=20
<div class=3D"gmail-m_-3776068910923444391WordSection1">
<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"></font><u></u><u=
></u></p>
<div>
<div>
<div>
<p class=3D"MsoNormal">Replaced the clutch hose and the slave.=C2=A0 St=
ill not=20
shifting.<u></u><u></u></p>
<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"></font><u></u><u=
></u></p>
<p class=3D"MsoNormal">When you push in the clutch, the lever arm on th=
e trans=20
moves a decent amount.=C2=A0 I didn=E2=80=99t measure it, but its proba=
bly =C2=BD=E2=80=9D to =C2=BE=E2=80=9D,=20
something like that.=C2=A0=20
<u></u><u></u></p></div></div></div></div></blockquote></blockquote>
</div></blockquote><blockquote type=3D"cite"><div dir=3D"ltr"><span>_______=
________________________________________</span><br><span></span><br><span><=
a href=3D"mailto:Mgs@autox.team.net"; target=3D"_blank">Mgs@autox.team.net</=
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h@gmail.com</a></span><br></div></blockquote></div>________________________=
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</blockquote></div>
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