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Both the clutch and brake master cylinder--Moss, at least, sells the
same part for both, and they're on sale--is just a piston that pushes
fluid to the slave cylinder. It has a rubber seal that eventually wears
and can be replaced. That's it; pressure is relieved when you lift your
fit and the piston retracts. Both the brake and clutch MCs have a
spring-loaded non-return valve--sometimes called a 'foot valve'--at the
end of the pushrod which is essentially a small piston; it opens when
the pedal is lifted and allows the reservoir to replenish fluid as the
clutch or brake wears and closes as soon as the pushrod moves inward. It
it wears or gets damaged the clutch/brakes will not function properly.
See part# 79 here:
https://mossmotors.com/ahy-035-clutch-100-6-3000
Soooooooo ... what's the story: "(Non-standard rod. Long story)." Were
you involved?
Bob
On 6/23/2024 5:52 AM, Simon Lachlan via Healeys wrote:
>
> With reference to the slipping clutch &/or overdrive, I do believe
> thatitis fixed. Said that before and it let me down again. But, this
> time, I had it done professionally by a local team that Iâ??d never used
> before.
>
> Anyhow, after my wasting a lot of time and some money checking
> everything and getting nowhere, these guys said thatthe rod in the
> clutch master cylinder was too long and theyâ??d had to reduce itâ??s
> length. (Non-standard rod. Long story). So,apparently the pressure
> wasnâ??t being allowedto bleed back/out and the slave cylinder remained
> pressurized etcetc.
>
> Now, if that sounds like amuddle, it is and thatâ??s because Iâ??ve never
> delved into or fully understood the workings of the clutch master
> cylinder.(Which is why I never thought of it during the whole affair.
> But nor did anyone else).I know itâ??s not just a simple pusher, like a
> bicycle pump, but thatâ??s really all. I googled it and looked into my
> yearsâ??worth ofcollected files of advice and wisdom. But nothing found.
>
> Can someone just explain how the thing works so I can understand what
> was going on?I should like to close the whole chapter and move on���..
>
> Thanks,
>
> Simon
>
>
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Both the clutch and brake master cylinder--Moss, at least, sells the
same part for both, and they're on sale--is just a piston that
pushes fluid to the slave cylinder. It has a rubber seal that
eventually wears and can be replaced. That's it; pressure is
relieved when you lift your fit and the piston retracts. Both the
brake and clutch MCs have a spring-loaded non-return
valve--sometimes called a 'foot valve'--at the end of the pushrod
which is essentially a small piston; it opens when the pedal is
lifted and allows the reservoir to replenish fluid as the clutch or
brake wears and closes as soon as the pushrod moves inward. It it
wears or gets damaged the clutch/brakes will not function properly.
See part# 79 here:<br>
<br>
<a class="moz-txt-link-freetext"
href="https://mossmotors.com/ahy-035-clutch-100-6-3000";>https://mossmotors.com/ahy-035-clutch-100-6-3000</a><br>
<br>
<span lang="en-gb"><font face="Times New Roman"> Soooooooo ...
what's the story: "(Non-standard rod. Long story)." Were you
involved?<br>
<br>
<br>
Bob<br>
</font></span><br>
<div class="moz-cite-prefix">On 6/23/2024 5:52 AM, Simon Lachlan via
Healeys wrote:<br>
</div>
<blockquote type="cite"
cite="mid:000201dac56c$355e18f0$a01a4ad0$@alexarevel.plus.com">
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<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">With
reference to the slipping clutch &/or over</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Times New Roman">drive, I do believe
that</font></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"> <font
face="Times New Roman">it</font></span><span
lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"> <font
face="Times New Roman">is fixed. Said that before and it let
me down again. But, this time, I had it done professionally
by a local team that Iâ??d ne</font></span><span
lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"><font
face="Times New Roman">ver used before. </font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Anyhow,
after my wasting a lot of time and some money checking
everything and getting nowhere, these guys said
that</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"> <font face="Times New Roman">the rod in the
clutch master cylinder was too long and theyâ??d had to reduce
itâ??s length. (Non-standard rod. Long story).
So,</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Times New Roman"> apparently the
pressure wasnâ??t being allow</font></span><span
lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"><font
face="Times New Roman">ed</font></span><span
lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"><font
face="Times New Roman"> to bleed back/out and the slave
cylinder remained pressurized etcetc.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Now,
if that sounds like a</font></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"> <font
face="Times New Roman">muddle, it is and thatâ??s because Iâ??ve
never delved into or fully understood the workings of the
clutch master cylinder.</font></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"><font
face="Times New Roman"> (Which is wh</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Times New Roman">y I never thought of
it during the whole affair. But nor did anyone
else).</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Times New Roman"> I know itâ??s not
just a s</font></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"><font
face="Times New Roman">imple pusher, like a bicycle pump,
but thatâ??s really all. I googled it and looked into my
years</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Times New Roman">â??</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Times New Roman"> worth of</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Times New Roman"> collected files of
advice and wisdom. But nothing found.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Can
someone just explain how the thing works so I can understand
what was going on?</font></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"> <font face="Times New Roman">I should like to
close the whole chapter and move on���..</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New
Roman">Tha</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Times New Roman">nks,</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New
Roman">Simon</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span></p>
<br>
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