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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 =
all of them).
=E2=80=9C=E2=80=9CIf the bleeding of any cylinder continues without =
success 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
=20
=20
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
=20
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
=20
=20
Dave
=20
From: Healeys <healeys-bounces@autox.team.net =
Healeys
Sent: Tuesday, August 30, 2022 5:27 PM
Subject: [Healeys] BN1 brake system
=20
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.=20
Gary Hodson =20
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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Yes, for sure, an Eezibleeder helps. Keep the air pressure =
down, maybe a bit less than suggested in the =
destructions.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Otherwise, see this, below, from one of my manuals. =
(Curiously, not in all of them).<o:p></o:p></span></p><p =
class=3DMsoBodyText =
style=3D'mso-margin-top-alt:6.0pt;margin-right:13.55pt;margin-bottom:0cm;=
margin-left:5.95pt;margin-bottom:.0001pt'><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>=E2=80=9C</sp=
an><span lang=3DEN-US>=E2=80=9CIf<span style=3D'letter-spacing:-.25pt'> =
</span>the<span style=3D'letter-spacing:-.25pt'> </span><span =
style=3D'letter-spacing:-.05pt'>bleeding</span><span =
style=3D'letter-spacing:-.2pt'> </span>of<span =
style=3D'letter-spacing:-.25pt'> </span>any<span =
style=3D'letter-spacing:-.25pt'> </span>cylinder<span =
style=3D'letter-spacing:-.25pt'> </span>continues<span =
style=3D'letter-spacing:-.3pt'> </span><span =
style=3D'letter-spacing:-.05pt'>without</span><span =
style=3D'letter-spacing:-.2pt'> </span><span =
style=3D'letter-spacing:-.05pt'>success</span><span =
style=3D'letter-spacing:-.25pt'> </span>for<span =
style=3D'letter-spacing:-.25pt'> </span>a<span =
style=3D'letter-spacing:-.2pt'> </span><span =
style=3D'letter-spacing:-.05pt'>considerable</span><span =
style=3D'letter-spacing:-.25pt'> </span><span =
style=3D'letter-spacing:-.05pt'>time,</span><span =
style=3D'letter-spacing:-.25pt'> </span>it<span =
style=3D'letter-spacing:-.2pt'> </span>is<span =
style=3D'letter-spacing:3.05pt'> </span>possible<span =
style=3D'letter-spacing:-.25pt'> </span>that<span =
style=3D'letter-spacing:-.25pt'> </span>air<span =
style=3D'letter-spacing:-.2pt'> </span>is<span =
style=3D'letter-spacing:-.25pt'> </span>being<span =
style=3D'letter-spacing:-.25pt'> </span>drawn<span =
style=3D'letter-spacing:-.2pt'> </span>in<span =
style=3D'letter-spacing:-.25pt'> </span>past<span =
style=3D'letter-spacing:-.25pt'> </span>the<span =
style=3D'letter-spacing:-.2pt'> </span><span =
style=3D'letter-spacing:-.05pt'>bleeder</span><span =
style=3D'letter-spacing:-.25pt'> </span><span =
style=3D'letter-spacing:-.05pt'>screw</span><span =
style=3D'letter-spacing:-.2pt'> </span>threads.<span =
style=3D'letter-spacing:-.2pt'> </span>In<span =
style=3D'letter-spacing:-.2pt'> </span><span =
style=3D'letter-spacing:-.05pt'>such</span><span =
style=3D'letter-spacing:-.2pt'> </span>cases<span =
style=3D'letter-spacing:-.2pt'> </span>tighten<span =
style=3D'letter-spacing:1.4pt'> </span>the<span =
style=3D'letter-spacing:-.25pt'> </span>bleeder<span =
style=3D'letter-spacing:-.15pt'> </span><span =
style=3D'letter-spacing:-.05pt'>screw</span><span =
style=3D'letter-spacing:-.2pt'> </span>at<span =
style=3D'letter-spacing:-.2pt'> </span>the<span =
style=3D'letter-spacing:-.2pt'> </span>end<span =
style=3D'letter-spacing:-.2pt'> </span>of<span =
style=3D'letter-spacing:-.25pt'> </span>each<span =
style=3D'letter-spacing:-.2pt'> </span>downward<span =
style=3D'letter-spacing:-.2pt'> </span>stroke*<span =
style=3D'letter-spacing:-.15pt'> </span>of<span =
style=3D'letter-spacing:-.15pt'> </span>the<span =
style=3D'letter-spacing:-.2pt'> </span>pedal<span =
style=3D'letter-spacing:-.2pt'> </span>and<span =
style=3D'letter-spacing:-.2pt'> </span><span =
style=3D'letter-spacing:-.05pt'>allow</span><span =
style=3D'letter-spacing:-.2pt'> </span>the<span =
style=3D'letter-spacing:-.2pt'> </span>pedal<span =
style=3D'letter-spacing:-.15pt'> </span>to<span =
style=3D'letter-spacing:1.3pt'> </span>return<span =
style=3D'letter-spacing:-.35pt'> </span>fully<span =
style=3D'letter-spacing:-.3pt'> </span>before<span =
style=3D'letter-spacing:-.3pt'> </span>re-opening<span =
style=3D'letter-spacing:-.25pt'> </span>it.<span =
style=3D'letter-spacing:-.35pt'> </span>Close<span =
style=3D'letter-spacing:-.3pt'> </span>the<span =
style=3D'letter-spacing:-.3pt'> </span><span =
style=3D'letter-spacing:-.05pt'>bleeder</span><span =
style=3D'letter-spacing:-.25pt'> </span><span =
style=3D'letter-spacing:-.05pt'>screw</span><span =
style=3D'letter-spacing:-.3pt'> </span><span =
style=3D'letter-spacing:-.05pt'>finally</span><span =
style=3D'letter-spacing:-.25pt'> </span><span =
style=3D'letter-spacing:-.05pt'>during</span><span =
style=3D'letter-spacing:-.25pt'> </span>the<span =
style=3D'letter-spacing:-.3pt'> </span>last<span =
style=3D'letter-spacing:-.35pt'> </span><span =
style=3D'letter-spacing:-.05pt'>pedal</span><span =
style=3D'letter-spacing:1.2pt'> </span><span =
style=3D'letter-spacing:-.05pt'>application.=E2=80=9D<o:p></o:p></span></=
span></p><p class=3DMsoBodyText =
style=3D'mso-margin-top-alt:6.0pt;margin-right:13.55pt;margin-bottom:0cm;=
margin-left:5.95pt;margin-bottom:.0001pt'><span lang=3DEN-US =
style=3D'letter-spacing:-.05pt'>*ie to prevent air being drawn in during =
the upward passage of the pedal. (SDL =
14/08/2019)=E2=80=9D<o:p></o:p></span></p><p class=3DMsoBodyText =
style=3D'mso-margin-top-alt:6.0pt;margin-right:13.55pt;margin-bottom:0cm;=
margin-left:5.95pt;margin-bottom:.0001pt'><span lang=3DEN-US>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.<o:p></o:p></span></p><p class=3DMsoBodyText =
style=3D'mso-margin-top-alt:6.0pt;margin-right:13.55pt;margin-bottom:0cm;=
margin-left:5.95pt;margin-bottom:.0001pt'><span lang=3DEN-US>Good luck =
anyhow.<o:p></o:p></span></p><p class=3DMsoBodyText =
style=3D'mso-margin-top-alt:6.0pt;margin-right:13.55pt;margin-bottom:0cm;=
margin-left:5.95pt;margin-bottom:.0001pt'><span =
lang=3DEN-US>Simon<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Healeys =
<healeys-bounces@autox.team.net> <b>On Behalf Of </b>David Leong =
via Healeys<br><b>Sent:</b> 31 August 2022 06:19<br><b>To:</b> 'Healey =
List (healeys@autox.team.net)' =
<healeys@autox.team.net><br><b>Subject:</b> Re: [Healeys] BN1 =
brake system<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>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<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p> </o:p></span></p><div><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p> </o:p></span></p><p class=3DMsoNormal><b><i><span =
lang=3DEN-US style=3D'font-size:20.0pt;font-family:"Brush Script =
MT";color:#2626D4'>Dave</span></i></b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p></o:p></span></p></div><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p> </o:p></span></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Healeys =
<<a =
href=3D"mailto:healeys-bounces@autox.team.net";>healeys-bounces@autox.team=
.net</a>> <b>On Behalf Of </b>warthodson--- via =
Healeys<br><b>Sent:</b> Tuesday, August 30, 2022 5:27 PM<br><b>To:</b> =
<a =
href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a><br><b>S=
ubject:</b> [Healeys] BN1 brake =
system<o:p></o:p></span></p></div></div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p><div><div><p =
class=3DMsoNormal><span lang=3DEN-US style=3D'font-family:"Comic Sans =
MS";color:black'>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. =
<o:p></o:p></span></p><div><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-family:"Comic Sans MS";color:black'>Gary Hodson =
<o:p></o:p></span></p></div></div></div></div></body></html>
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