Subject: Re: [6pack] Brake MC

From: im sloane via 6pack <[email-masked]>
Date: Mon, 16 Sep 2019 21:46:11 +0000

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I have heard stories about someone bleeding the breaks, (not loved LBC but =
their daily driver), after replacing a caliper or wheel cylinder, and short=
ly thereafter experienced a master cylinder failure. The reported reason wa=
s the master cylinder was being pressed into territory that it didn't trave=
l under normal conditions, and due to slight pitting or corrosion, the seal=
s in the master were compromised.  The block under the pedal is reported to=
 hopefully prevent this.  Obviously not necessary with a new master cylinde=
r.

YMMV,
Sloane
________________________________
From: 6pack <[email-masked]> on behalf of Richard Taylor via =
6pack <[email-masked]>
Sent: Monday, September 16, 2019 7:57 PM
To: 6pack list <[email-masked]>
Subject: [6pack] Brake MC

I don=92t understand the logic of limiting the travel of the brake pedal, e=
ither. While this pedal shouldn=92t have to travel even half of it stroke t=
o apply full pressure to the brakes, we wouldn=92t want to limit it should =
there be a failure in, say, half of the system. (Which would require a deep=
er pedal to make contact.

I don=92t know if it applies to this (brake) limiting of the pedal, but the=
re are some clutch operating systems that require a =93pedal stop=94 so tha=
t the throwout bearing isn=92t pushed out too far during the clutch disenga=
gement. The hydraulic bearing in the Toyota 5 speed conversion would be one=
 of them.

Dick

otmail.com

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<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
I have heard stories about someone bleeding the breaks, (not loved LBC but =
their daily driver), after replacing a caliper or wheel cylinder, and short=
ly thereafter experienced a master cylinder failure. The reported reason wa=
s the master cylinder was being
 pressed into territory that it didn't travel under normal conditions, and =
due to slight pitting or corrosion, the seals in the master were compromise=
d.&nbsp; The block under the pedal is reported to hopefully prevent this.&n=
bsp; Obviously not necessary with a new master
 cylinder.&nbsp;</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
YMMV,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
Sloane&nbsp;</div>
<hr tabindex=3D"-1" style=3D"display:inline-block; width:98%">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" co=
lor=3D"#000000" style=3D"font-size:11pt"><b>From:</b> 6pack &lt;6pack-bounc=
[email-masked]&gt; on behalf of Richard Taylor via 6pack &lt;6pack@autox=
.team.net&gt;<br>
<b>Sent:</b> Monday, September 16, 2019 7:57 PM<br>
<b>To:</b> 6pack list &lt;[email-masked]&gt;<br>
<b>Subject:</b> [6pack] Brake MC</font>
<div>&nbsp;</div>
</div>
<div class=3D"BodyFragment"><font size=3D"2"><span style=3D"font-size:11pt"=
<div class=3D"PlainText">I don=92t understand the logic of limiting the tra=
vel of the brake pedal, either. While this pedal shouldn=92t have to travel=
 even half of it stroke to apply full pressure to the brakes, we wouldn=92t=
 want to limit it should there be a failure
 in, say, half of the system. (Which would require a deeper pedal to make c=
ontact.
<br>
<br>
I don=92t know if it applies to this (brake) limiting of the pedal, but the=
re are some clutch operating systems that require a =93pedal stop=94 so tha=
t the throwout bearing isn=92t pushed out too far during the clutch disenga=
gement. The hydraulic bearing in the Toyota
 5 speed conversion would be one of them.<br>
<br>
Dick<br>
<br>
[email-masked]">
http://autox.team.net/mailman/options/6pack/[email-masked]</a><br>
<br>
</div>
</span></font></div>
</div>
</body>
</html>

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_______________________________________________
Archive: http://www.team.net/archive

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From: Richard Lindsay via 6pack <[email-masked]>
Date: Mon, 16 Sep 2019 16:51:16 -0500

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That makes perfect sense. Thank you.

On Mon, Sep 16, 2019, 4:46 PM im sloane via 6pack <[email-masked]>
wrote:

> I have heard stories about someone bleeding the breaks, (not loved LBC bu=
t
> their daily driver), after replacing a caliper or wheel cylinder, and
> shortly thereafter experienced a master cylinder failure. The reported
> reason was the master cylinder was being pressed into territory that it
> didn't travel under normal conditions, and due to slight pitting or
> corrosion, the seals in the master were compromised.  The block under the
> pedal is reported to hopefully prevent this.  Obviously not necessary wit=
h
> a new master cylinder.
>
> YMMV,
> Sloane
> ------------------------------
> *From:* 6pack <[email-masked]> on behalf of Richard Taylor
> via 6pack <[email-masked]>
> *Sent:* Monday, September 16, 2019 7:57 PM
> *To:* 6pack list <[email-masked]>
> *Subject:* [6pack] Brake MC
>
> I don=E2=80=99t understand the logic of limiting the travel of the brake =
pedal,
> either. While this pedal shouldn=E2=80=99t have to travel even half of it=
 stroke to
> apply full pressure to the brakes, we wouldn=E2=80=99t want to limit it s=
hould
> there be a failure in, say, half of the system. (Which would require a
> deeper pedal to make contact.
>
> I don=E2=80=99t know if it applies to this (brake) limiting of the pedal,=
 but
> there are some clutch operating systems that require a =E2=80=9Cpedal sto=
p=E2=80=9D so that
> the throwout bearing isn=E2=80=99t pushed out too far during the clutch
> disengagement. The hydraulic bearing in the Toyota 5 speed conversion wou=
ld
> be one of them.
>
> Dick
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/6pack/[email-masked]
>
> Support Team.Net http://www.team.net/donate.html
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<div dir=3D"auto">That makes perfect sense. Thank you.</div><br><div class=
=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Sep 16, 2019=
, 4:46 PM im sloane via 6pack &lt;<a href=3D"mailto:[email-masked]">6=
[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quot=
e" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<div dir=3D"ltr">
<div>
<div id=3D"m_7502432358008343045appendonsend" style=3D"font-family:Calibri,=
Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I have heard stories about someone bleeding the breaks, (not loved LBC but =
their daily driver), after replacing a caliper or wheel cylinder, and short=
ly thereafter experienced a master cylinder failure. The reported reason wa=
s the master cylinder was being
 pressed into territory that it didn&#39;t travel under normal conditions, =
and due to slight pitting or corrosion, the seals in the master were compro=
mised.=C2=A0 The block under the pedal is reported to hopefully prevent thi=
s.=C2=A0 Obviously not necessary with a new master
 cylinder.=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
YMMV,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Sloane=C2=A0</div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"m_7502432358008343045divRplyFwdMsg" dir=3D"ltr"><font face=3D"Ca=
libri, sans-serif" color=3D"#000000" style=3D"font-size:11pt"><b>From:</b> =
6pack &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank"=
 rel=3D"noreferrer">[email-masked]</a>&gt; on behalf of Richa=
rd Taylor via 6pack &lt;<a href=3D"mailto:[email-masked]" target=3D"_=
blank" rel=3D"noreferrer">[email-masked]</a>&gt;<br>
<b>Sent:</b> Monday, September 16, 2019 7:57 PM<br>
<b>To:</b> 6pack list &lt;<a href=3D"mailto:[email-masked]" target=3D=
"_blank" rel=3D"noreferrer">[email-masked]</a>&gt;<br>
<b>Subject:</b> [6pack] Brake MC</font>
<div>=C2=A0</div>
</div>
<div class=3D"m_7502432358008343045BodyFragment"><font size=3D"2"><span sty=
le=3D"font-size:11pt">
<div class=3D"m_7502432358008343045PlainText">I don=E2=80=99t understand th=
e logic of limiting the travel of the brake pedal, either. While this pedal=
 shouldn=E2=80=99t have to travel even half of it stroke to apply full pres=
sure to the brakes, we wouldn=E2=80=99t want to limit it should there be a =
failure
 in, say, half of the system. (Which would require a deeper pedal to make c=
ontact.
<br>
<br>
I don=E2=80=99t know if it applies to this (brake) limiting of the pedal, b=
ut there are some clutch operating systems that require a =E2=80=9Cpedal st=
op=E2=80=9D so that the throwout bearing isn=E2=80=99t pushed out too far d=
uring the clutch disengagement. The hydraulic bearing in the Toyota
 5 speed conversion would be one of them.<br>
<br>
Dick<br>
<br>
[email-masked]" target=3D"_blank" rel=3D"noreferrer">
http://autox.team.net/mailman/options/6pack/[email-masked]</a><br>
<br>
</div>
</span></font></div>
</div>
</div>

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