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Actually - part of the problem is the BN1 and some BN2 bleeder valves
originally had a separate ball inside the slave=E2=80=99s bleeder which the=
little
ball sealed the system. Over the years i=E2=80=99m sure that ball has been=
lost
and maybe you think the bleed screw is sealing the slave when it really
isn=E2=80=99t until it=E2=80=99s fully cinched. That also can contribute t=
o the inability
to get a firm pedal.
Cheers,
Alan
On Wed, 31 Aug 2022 at 4:16 PM, Simon Lachlan via Healeys <
healeys@autox.team.net> wrote:
> Yes, for sure, an Eezibleeder helps. Keep the air pressure down, maybe a
> bit less than suggested in the destructions.
>
> Otherwise, see this, below, from one of my manuals. (Curiously, not in al=
l
> of them).
>
> =E2=80=9C=E2=80=9CIf the bleeding of any cylinder continues without succe=
ss for a
> considerable time, it is possible that air is being drawn in past the
> bleeder screw threads. In such cases tighten the bleeder screw at the end
> of each downward stroke* of the pedal and allow the pedal to return fully
> before re-opening it. Close the bleeder screw finally during the last
> pedal application.=E2=80=9D
>
> *ie to prevent air being drawn in during the upward passage of the pedal.
> (SDL 14/08/2019)=E2=80=9D
>
> I suppose that, the brakes being old, the threads get worn and let air
> back in as the pedal goes back up. So, I tighten the bleeder as the fluid
> is still coming out, ie before the downward stroke is finished. Slows the
> process up somewhat and tries the patience of ones wifely assistant.
>
> Good luck anyhow.
>
> Simon
>
>
>
>
>
> *From:* Healeys <healeys-bounces@autox.team.net> *On Behalf Of *David
> Leong via Healeys
> *Sent:* 31 August 2022 06:19
> *To:* 'Healey List (healeys@autox.team.net)' <healeys@autox.team.net>
> *Subject:* Re: [Healeys] BN1 brake system
>
>
>
> Use a power pressure bleeder (I have a Motive Bleeder) and tap on the
> slaves to loosen any air bubbles. Make sure there are no high spots where
> air can get trapped and not be purged out of the bleeder screw
>
>
>
>
>
> *Dave*
>
>
>
> *From:* Healeys <healeys-bounces@autox.team.net> *On Behalf Of *warthodso=
n---
> via Healeys
> *Sent:* Tuesday, August 30, 2022 5:27 PM
> *To:* healeys@autox.team.net
> *Subject:* [Healeys] BN1 brake system
>
>
>
> We have been trying for several months to bleed the brakes on RHD BN1, to
> no avail. The car has been professionally restored & appears to be in
> excellent condition. Today, we tried again to bleed the system following
> the shop manual. I.E. backing off the adjusters on the front & back &
> bleeding & then readjusting the brakes. The results were the same. There
> seems to be an excessively large amount of pedal travel before the brakes
> are engaged & when engaged they feel "spongy". We have access to 2 other
> 100's for reference. Any help would be greatly appreciated. Also, we are
> not clear on the adjustment of the free play of the master cylinder.
>
> Gary Hodson
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
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>
> Archive: http://www.team.net/pipermail/healeys
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>
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> http://autox.team.net/mailman/listinfo/healeys
>
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>
>
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<div dir=3D"auto">Actually - part of the problem is the BN1 and some BN2 bl=
eeder valves originally had a separate ball inside the slave=E2=80=99s blee=
der which the little ball sealed the system.=C2=A0 Over the years i=E2=80=
=99m sure that ball has been lost and maybe you think the bleed screw is se=
aling the slave when it really isn=E2=80=99t until it=E2=80=99s fully cinch=
ed.=C2=A0 That also can contribute to the inability to get a firm pedal. =
=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D"auto">Cheers,</div><div=
dir=3D"auto"><br></div><div dir=3D"auto">Alan</div><div><br><div class=3D"=
gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, 31 Aug 2022 at 4=
:16 PM, Simon Lachlan via Healeys <<a href=3D"mailto:healeys@autox.team.=
net">healeys@autox.team.net</a>> wrote:<br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-l=
eft-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div l=
ang=3D"EN-GB" link=3D"#0563C1" vlink=3D"#954F72"><div class=3D"m_-904888934=
0569780999WordSection1"><p class=3D"MsoNormal"><span style=3D"font-size:11p=
t;font-family:Calibri,sans-serif">Yes, for sure, an Eezibleeder helps. Keep=
the air pressure down, maybe a bit less than suggested in the destructions=
.<u style=3D"font-family:Calibri,sans-serif"></u><u style=3D"font-family:Ca=
libri,sans-serif"></u></span></p><p class=3D"MsoNormal"><span style=3D"font=
-size:11pt;font-family:Calibri,sans-serif">Otherwise, see this, below, from=
one of my manuals. (Curiously, not in all of them).<u style=3D"font-family=
:Calibri,sans-serif"></u><u style=3D"font-family:Calibri,sans-serif"></u></=
span></p><p class=3D"m_-9048889340569780999MsoBodyText" style=3D"margin-rig=
ht:13.55pt;margin-left:5.95pt;margin-bottom:0.0001pt"><span lang=3D"EN-US" =
style=3D"font-size:11pt;font-family:Calibri,sans-serif">=E2=80=9C</span><sp=
an lang=3D"EN-US">=E2=80=9CIf<span style=3D"letter-spacing:-0.25pt"> </span=
>the<span style=3D"letter-spacing:-0.25pt"> </span><span style=3D"letter-sp=
acing:-0.05pt">bleeding</span><span style=3D"letter-spacing:-0.2pt"> </span=
>of<span style=3D"letter-spacing:-0.25pt"> </span>any<span style=3D"letter-=
spacing:-0.25pt"> </span>cylinder<span style=3D"letter-spacing:-0.25pt"> </=
span>continues<span style=3D"letter-spacing:-0.3pt"> </span><span style=3D"=
letter-spacing:-0.05pt">without</span><span style=3D"letter-spacing:-0.2pt"=
> </span><span style=3D"letter-spacing:-0.05pt">success</span><span style=
=3D"letter-spacing:-0.25pt"> </span>for<span style=3D"letter-spacing:-0.25p=
t"> </span>a<span style=3D"letter-spacing:-0.2pt"> </span><span style=3D"le=
tter-spacing:-0.05pt">considerable</span><span style=3D"letter-spacing:-0.2=
5pt"> </span><span style=3D"letter-spacing:-0.05pt">time,</span><span style=
=3D"letter-spacing:-0.25pt"> </span>it<span style=3D"letter-spacing:-0.2pt"=
> </span>is<span style=3D"letter-spacing:3.05pt"> </span>possible<span styl=
e=3D"letter-spacing:-0.25pt"> </span>that<span style=3D"letter-spacing:-0.2=
5pt"> </span>air<span style=3D"letter-spacing:-0.2pt"> </span>is<span style=
=3D"letter-spacing:-0.25pt"> </span>being<span style=3D"letter-spacing:-0.2=
5pt"> </span>drawn<span style=3D"letter-spacing:-0.2pt"> </span>in<span sty=
le=3D"letter-spacing:-0.25pt"> </span>past<span style=3D"letter-spacing:-0.=
25pt"> </span>the<span style=3D"letter-spacing:-0.2pt"> </span><span style=
=3D"letter-spacing:-0.05pt">bleeder</span><span style=3D"letter-spacing:-0.=
25pt"> </span><span style=3D"letter-spacing:-0.05pt">screw</span><span styl=
e=3D"letter-spacing:-0.2pt"> </span>threads.<span style=3D"letter-spacing:-=
0.2pt"> </span>In<span style=3D"letter-spacing:-0.2pt"> </span><span style=
=3D"letter-spacing:-0.05pt">such</span><span style=3D"letter-spacing:-0.2pt=
"> </span>cases<span style=3D"letter-spacing:-0.2pt"> </span>tighten<span s=
tyle=3D"letter-spacing:1.4pt"> </span>the<span style=3D"letter-spacing:-0.2=
5pt"> </span>bleeder<span style=3D"letter-spacing:-0.15pt"> </span><span st=
yle=3D"letter-spacing:-0.05pt">screw</span><span style=3D"letter-spacing:-0=
.2pt"> </span>at<span style=3D"letter-spacing:-0.2pt"> </span>the<span styl=
e=3D"letter-spacing:-0.2pt"> </span>end<span style=3D"letter-spacing:-0.2pt=
"> </span>of<span style=3D"letter-spacing:-0.25pt"> </span>each<span style=
=3D"letter-spacing:-0.2pt"> </span>downward<span style=3D"letter-spacing:-0=
.2pt"> </span>stroke*<span style=3D"letter-spacing:-0.15pt"> </span>of<span=
style=3D"letter-spacing:-0.15pt"> </span>the<span style=3D"letter-spacing:=
-0.2pt"> </span>pedal<span style=3D"letter-spacing:-0.2pt"> </span>and<span=
style=3D"letter-spacing:-0.2pt"> </span><span style=3D"letter-spacing:-0.0=
5pt">allow</span><span style=3D"letter-spacing:-0.2pt"> </span>the<span sty=
le=3D"letter-spacing:-0.2pt"> </span>pedal<span style=3D"letter-spacing:-0.=
15pt"> </span>to<span style=3D"letter-spacing:1.3pt"> </span>return<span st=
yle=3D"letter-spacing:-0.35pt"> </span>fully<span style=3D"letter-spacing:-=
0.3pt"> </span>before<span style=3D"letter-spacing:-0.3pt"> </span>re-openi=
ng<span style=3D"letter-spacing:-0.25pt"> </span>it.<span style=3D"letter-s=
pacing:-0.35pt"> </span>Close<span style=3D"letter-spacing:-0.3pt"> </span>=
the<span style=3D"letter-spacing:-0.3pt"> </span><span style=3D"letter-spac=
ing:-0.05pt">bleeder</span><span style=3D"letter-spacing:-0.25pt"> </span><=
span style=3D"letter-spacing:-0.05pt">screw</span><span style=3D"letter-spa=
cing:-0.3pt"> </span><span style=3D"letter-spacing:-0.05pt">finally</span><=
span style=3D"letter-spacing:-0.25pt"> </span><span style=3D"letter-spacing=
:-0.05pt">during</span><span style=3D"letter-spacing:-0.25pt"> </span>the<s=
pan style=3D"letter-spacing:-0.3pt"> </span>last<span style=3D"letter-spaci=
ng:-0.35pt"> </span><span style=3D"letter-spacing:-0.05pt">pedal</span><spa=
n style=3D"letter-spacing:1.2pt"> </span><span style=3D"letter-spacing:-0.0=
5pt">application.=E2=80=9D<u></u><u></u></span></span></p><p class=3D"m_-90=
48889340569780999MsoBodyText" style=3D"margin-right:13.55pt;margin-left:5.9=
5pt;margin-bottom:0.0001pt"><span lang=3D"EN-US" style=3D"letter-spacing:-0=
.05pt">*ie to prevent air being drawn in during the upward passage of the p=
edal. (SDL 14/08/2019)=E2=80=9D<u></u><u></u></span></p><p class=3D"m_-9048=
889340569780999MsoBodyText" style=3D"margin-right:13.55pt;margin-left:5.95p=
t;margin-bottom:0.0001pt"><span lang=3D"EN-US">I suppose that, the brakes b=
eing old, the threads get worn and let air back in as the pedal goes back u=
p. So, I tighten the bleeder as the fluid is still coming out, ie before th=
e downward stroke is finished. Slows the process up somewhat and tries the =
patience of ones wifely assistant.<u></u><u></u></span></p><p class=3D"m_-9=
048889340569780999MsoBodyText" style=3D"margin-right:13.55pt;margin-left:5.=
95pt;margin-bottom:0.0001pt"><span lang=3D"EN-US">Good luck anyhow.<u></u><=
u></u></span></p><p class=3D"m_-9048889340569780999MsoBodyText" style=3D"ma=
rgin-right:13.55pt;margin-left:5.95pt;margin-bottom:0.0001pt"><span lang=3D=
"EN-US">Simon<u></u><u></u></span></p><p class=3D"MsoNormal"><span style=3D=
"font-size:11pt;font-family:Calibri,sans-serif"><u style=3D"font-family:Cal=
ibri,sans-serif"></u>=C2=A0<u style=3D"font-family:Calibri,sans-serif"></u>=
</span></p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family=
:Calibri,sans-serif"><u style=3D"font-family:Calibri,sans-serif"></u>=C2=A0=
<u style=3D"font-family:Calibri,sans-serif"></u></span></p><div><div style=
=3D"border-style:solid none none;border-top-width:1pt;padding:3pt 0cm 0cm;b=
order-top-color:rgb(225,225,225)"><p class=3D"MsoNormal"><b><span lang=3D"E=
N-US" style=3D"font-size:11pt;font-family:Calibri,sans-serif">From:</span><=
/b><span lang=3D"EN-US" style=3D"font-size:11pt;font-family:Calibri,sans-se=
rif"> Healeys <<a href=3D"mailto:healeys-bounces@autox.team.net"; target=
=3D"_blank" style=3D"font-family:Calibri,sans-serif">healeys-bounces@autox.=
team.net</a>> <b style=3D"font-family:Calibri,sans-serif">On Behalf Of <=
/b>David Leong via Healeys<br><b style=3D"font-family:Calibri,sans-serif">S=
ent:</b> 31 August 2022 06:19<br><b style=3D"font-family:Calibri,sans-serif=
">To:</b> 'Healey List (<a href=3D"mailto:healeys@autox.team.net"; targe=
t=3D"_blank" style=3D"font-family:Calibri,sans-serif">healeys@autox.team.ne=
t</a>)' <<a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank"=
style=3D"font-family:Calibri,sans-serif">healeys@autox.team.net</a>><br=
><b style=3D"font-family:Calibri,sans-serif">Subject:</b> Re: [Healeys] BN1=
brake system<u style=3D"font-family:Calibri,sans-serif"></u><u style=3D"fo=
nt-family:Calibri,sans-serif"></u></span></p></div></div><p class=3D"MsoNor=
mal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNormal"><span lang=3D"EN-US" st=
yle=3D"font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">=
Use a power pressure bleeder (I have a Motive Bleeder) and tap on the slave=
s to loosen any air bubbles. Make sure there are no high spots where air ca=
n get trapped and not be purged out of the bleeder screw<u style=3D"font-fa=
mily:Calibri,sans-serif"></u><u style=3D"font-family:Calibri,sans-serif"></=
u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size=
:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u style=3D"font=
-family:Calibri,sans-serif"></u>=C2=A0<u style=3D"font-family:Calibri,sans-=
serif"></u></span></p><div><p class=3D"MsoNormal"><span lang=3D"EN-US" styl=
e=3D"font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u=
style=3D"font-family:Calibri,sans-serif"></u>=C2=A0<u style=3D"font-family=
:Calibri,sans-serif"></u></span></p><p class=3D"MsoNormal"><b><i><span lang=
=3D"EN-US" style=3D"font-size:20pt;font-family:"Brush Script MT";=
color:rgb(38,38,212)">Dave</span></i></b><span lang=3D"EN-US" style=3D"font=
-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u style=3D=
"font-family:Calibri,sans-serif"></u><u style=3D"font-family:Calibri,sans-s=
erif"></u></span></p></div><p class=3D"MsoNormal"><span lang=3D"EN-US" styl=
e=3D"font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u=
style=3D"font-family:Calibri,sans-serif"></u>=C2=A0<u style=3D"font-family=
:Calibri,sans-serif"></u></span></p><div><div style=3D"border-style:solid n=
one none;border-top-width:1pt;padding:3pt 0cm 0cm;border-top-color:rgb(225,=
225,225)"><p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size=
:11pt;font-family:Calibri,sans-serif">From:</span></b><span lang=3D"EN-US" =
style=3D"font-size:11pt;font-family:Calibri,sans-serif"> Healeys <<a hre=
f=3D"mailto:healeys-bounces@autox.team.net"; target=3D"_blank" style=3D"font=
-family:Calibri,sans-serif">healeys-bounces@autox.team.net</a>> <b style=
=3D"font-family:Calibri,sans-serif">On Behalf Of </b>warthodson--- via Heal=
eys<br><b style=3D"font-family:Calibri,sans-serif">Sent:</b> Tuesday, Augus=
t 30, 2022 5:27 PM<br><b style=3D"font-family:Calibri,sans-serif">To:</b> <=
a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank" style=3D"font-fa=
mily:Calibri,sans-serif">healeys@autox.team.net</a><br><b style=3D"font-fam=
ily:Calibri,sans-serif">Subject:</b> [Healeys] BN1 brake system<u style=3D"=
font-family:Calibri,sans-serif"></u><u style=3D"font-family:Calibri,sans-se=
rif"></u></span></p></div></div><p class=3D"MsoNormal"><span lang=3D"EN-US"=
><u></u>=C2=A0<u></u></span></p><div><div><p class=3D"MsoNormal"><span lang=
=3D"EN-US" style=3D"font-family:"Comic Sans MS";color:black">We h=
ave been trying for several months to bleed the brakes on RHD BN1, to no av=
ail. The car has been professionally restored & appears to be in excell=
ent condition. Today, we tried again to bleed the system following the shop=
manual. I.E. backing off the adjusters on the front & back & bleed=
ing & then readjusting the brakes. The results were the same. There see=
ms to be an excessively large amount of pedal travel before the brakes are =
engaged & when engaged they feel "spongy". We have access to =
2 other 100's for reference. Any help would be greatly appreciated. Als=
o, we are not clear on the adjustment of the free play of the master cylind=
er. <u style=3D"font-family:"Comic Sans MS""></u><u style=3D"font=
-family:"Comic Sans MS""></u></span></p><div><p class=3D"MsoNorma=
l"><span lang=3D"EN-US" style=3D"font-family:"Comic Sans MS";colo=
r:black">Gary Hodson=C2=A0 =C2=A0<u style=3D"font-family:"Comic Sans M=
S""></u><u style=3D"font-family:"Comic Sans MS""></u></span>=
</p></div></div></div></div></div>_________________________________________=
______<br>
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<br>
Archive: <a href=3D"http://www.team.net/pipermail/healeys"; rel=3D"noreferre=
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ttp://autox.team.net/archive/healeys" rel=3D"noreferrer" target=3D"_blank">=
http://autox.team.net/archive/healeys</a><br>
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</blockquote></div></div>
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_______________________________________________
Archive: http://www.team.net/pipermail/healeys
http://autox.team.net/archive/healeys
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
--===============8992201748458817482==--
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