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Re: [Mgs] B/GT gearbox mystery

To: mgs@autox.team.net
Subject: Re: [Mgs] B/GT gearbox mystery
From: Paul Hunt <paulbhunt73@gmail.com>
Date: Tue, 8 Oct 2024 08:18:02 +0100
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Delivered-to: mgs@autox.team.net
References: <1250110833.1317283.1727129345861@epix.net> <003f01db188c$24f1b530$6ed51f90$@planet.nl> <5b09dcc029704a0bbe581dc960046c69@ranteer.com> <5A27A512-8C64-459D-A104-351F6F5BA931@red4est.com>
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Exactly.  The only pressure of the release bearing on the cover plate 
should be from the light spring that is inside the slave cylinder.  When 
released you should be able to push the piston further back into the 
cylinder with the release arm, which displaces fluid into the master 
(watch it doesn't overflow).  When you release it again it should slowly 
come back out to put the release bearing back in contact with the cover 
plate.

That's what makes it self-adjusting - the piston moves out bit by as the 
release bearing and friction plate wear down, then is put back in again 
when you replace them.

It's exactly the same as calipers and pads.  Has anyone ever suggested 
you change the length of the pistons if you have a brake fault?  If they 
are too long you wouldn't be able to get the caliper with new pads over 
a new disk.  If they are too short you can push the seals past the end 
of the cylinders.

PaulH.

On 07/10/2024 18:05, Larry Colen wrote:
> The DPO had welded an extension to the rod, which gave it a bit more throw, 
> but kept the throw out bearing in contact with the clutch, wearing the carbon 
> disk entirely away in just a short while.
>
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    <p>Exactly.  The only pressure of the release bearing on the cover
      plate should be from the light spring that is inside the slave
      cylinder.  When released you should be able to push the piston
      further back into the cylinder with the release arm, which
      displaces fluid into the master (watch it doesn't overflow).  When
      you release it again it should slowly come back out to put the
      release bearing back in contact with the cover plate.</p>
    <p>That's what makes it self-adjusting - the piston moves out bit by
      as the release bearing and friction plate wear down, then is put
      back in again when you replace them.  </p>
    <p>It's exactly the same as calipers and pads.  Has anyone ever
      suggested you change the length of the pistons if you have a brake
      fault?  If they are too long you wouldn't be able to get the
      caliper with new pads over a new disk.  If they are too short you
      can push the seals past the end of the cylinders.<br>
    </p>
    <p>PaulH.<br>
    </p>
    <div class="moz-cite-prefix">On 07/10/2024 18:05, Larry Colen wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:5A27A512-8C64-459D-A104-351F6F5BA931@red4est.com"><span
      style="white-space: pre-wrap">
</span>
      <pre class="moz-quote-pre" wrap="">The DPO had welded an extension to the 
rod, which gave it a bit more throw, but kept the throw out bearing in contact 
with the clutch, wearing the carbon disk entirely away in just a short while.
</pre>
      <br>
    </blockquote>
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