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What brand master cylinder did you get? Not what supplier did you buy it fr=
om. I would suggest contacting the manufacturer & ask what their reason is =
for the warning message.=C2=A0I read somewhere that all seals are designed/=
intended to swell when in contact with any brake fluid. A few years ago I p=
ut a new seal in DOT4 & a new seal in DOT 5 fluid & after a couple of month=
s, I could not measure any difference in their sizes.=C2=A0
By "bypassed" do you mean the peddle went to the floor? It that is the case=
& there are no leaks evident, It sounds like your "check valve" in the mas=
ter cylinder is intermittingly malfunctioning. Maybe there is debris in the=
master cylinder or some other cause. You might try simply replacing the se=
als including the check valve assembly.=C2=A0Gary Hodson=C2=A0
-----Original Message-----
From: Brian Drab <bgdrab@redzone.ca>
To: healeys@autox.team.net <healeys@autox.team.net>
Sent: Sun, Jun 16, 2019 7:23 am
Subject: [Healeys] silicone brake fluid
<!-- #yiv0877942103 _filtered #yiv0877942103 {font-family:"Cambria Math=
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;} _filtered #yiv0877942103 {margin:72.0pt 72.0pt 72.0pt 72.0pt;} #yiv08779=
42103 div.yiv0877942103WordSection1 {} -->Last week I completed a drivin=
g tour in our BJ8. It was a great tour and everything ran well except for o=
ne thing. =C2=A04 or 5 times, when I used the clutch, the clutch master cyl=
inder bypassed. The rest of the time it worked well. As I don=E2=80=99t wan=
t to be caught without a clutch at a later date I am changing the clutch ma=
ster cylinder. I have received a replacement and am preparing to install it=
. On the box is a quick summary of the bleeding procedure under a warning =
=E2=80=93 =E2=80=9CUsing Silicon Brake fluid will void warranty=E2=80=9D. I=
have used silicon fluid for well over 10 tears and never experienced any p=
roblems with it and have never seen or heard of this type of warning before=
. I have never heard of any destructive qualities of Silicon fluid. My ques=
tion is =E2=80=93 does anyone have any idea what it is about. For me to cha=
nge to Dot4 fluid is quite a big deal as I would be changing out the clutch=
as well as the brake system seeing as they share a common reservoir. I=E2=
=80=99d appreciate any comments on the warning. Brian Drab BJ8 =C2=A0 ____=
___________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archiv=
e
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<div style=3D"color:black;font: 10pt arial;">
<div>What brand master cylinder did you get? Not what supplier did you buy =
it from. I would suggest contacting the manufacturer & ask what their r=
eason is for the warning message. </div>
<div>I read somewhere that all seals are designed/intended to swell when in=
contact with any brake fluid. A few years ago I put a new seal in DOT4 &am=
p; a new seal in DOT 5 fluid & after a couple of months, I could not me=
asure any difference in their sizes. </div>
<div><br>
</div>
<div>By "bypassed" do you mean the peddle went to the floor? It that is the=
case & there are no leaks evident, It sounds like your "check valve" i=
n the master cylinder is intermittingly malfunctioning. Maybe there is debr=
is in the master cylinder or some other cause. You might try simply replaci=
ng the seals including the check valve assembly. </div>
<div>Gary Hodson </div>
<br>
<br>
<div style=3D"font-family:arial,helvetica;font-size:10pt;color:black">-----=
Original Message-----<br>
From: Brian Drab <bgdrab@redzone.ca><br>
To: healeys@autox.team.net <healeys@autox.team.net><br>
Sent: Sun, Jun 16, 2019 7:23 am<br>
Subject: [Healeys] silicone brake fluid<br>
<br>
<div id=3D"yiv0877942103">
=20
=20
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72.0pt;} #yiv0877942103 div.yiv0877942103WordSection1 {} --></style>
<div>
<div class=3D"yiv0877942103WordSection1">
<div class=3D"yiv0877942103MsoNormal">Last week I completed a driving tour =
in our BJ8. It was a great tour and everything ran well except for one thin=
g. 4 or 5 times, when I used the clutch, the clutch master cylinder b=
ypassed. The rest of the time it worked well. As I don=E2=80=99t
want to be caught without a clutch at a later date I am changing the clutc=
h master cylinder. I have received a replacement and am preparing to instal=
l it.</div>
=20
<div class=3D"yiv0877942103MsoNormal">On the box is a quick summary of the =
bleeding procedure under a warning =E2=80=93 =E2=80=9CUsing Silicon Brake f=
luid will void warranty=E2=80=9D. I have used silicon fluid for well over 1=
0 tears and never experienced any problems with it and have never seen or
heard of this type of warning before. I have never heard of any destructiv=
e qualities of Silicon fluid.
</div>
=20
<div class=3D"yiv0877942103MsoNormal">My question is =E2=80=93 does anyone =
have any idea what it is about.
</div>
=20
<div class=3D"yiv0877942103MsoNormal">For me to change to Dot4 fluid is qui=
te a big deal as I would be changing out the clutch as well as the brake sy=
stem seeing as they share a common reservoir.
</div>
=20
<div class=3D"yiv0877942103MsoNormal">I=E2=80=99d appreciate any comments o=
n the warning.</div>
=20
<div class=3D"yiv0877942103MsoNormal">Brian Drab</div>
=20
<div class=3D"yiv0877942103MsoNormal">BJ8</div>
=20
<div class=3D"yiv0877942103MsoNormal"> </div>
=20
</div>
</div>
</div>
_______________________________________________<br>
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