[Mgs] bad clutch or?

[Dan DiBiase]

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 at 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 was
> present on the area around the plate’s splines.  Pushing and pulling 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 plate
> 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 at 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 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 -----
>
> 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’t measure it, but its probably ½” to ¾”, something like
> that.
>
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