Subject: Re: [Healeys] BN1 brake bleed

From: Henry G Leach via Healeys <[email-masked]>
Date: Wed, 31 Aug 2022 18:01:06 +0000 eShEwmhijGOTYltQG0yJ5eosfu6ZXd33CbskdPxEV53yRxOsyOORed/W+TvtZHWT67cc/5qGHGTDWRnPWeDVWER20OS14P/MACQHUnlD7QyvYiD5Ybh4unPZ L8VcFyqJQeFfpAq07Bqz/1jlGt92rkcOBf5FzHlYXGY=

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Agree with all suggestions. Sucking is better than pumping, as the=0Apum=
p method moves such a small quantity of fluid throughout the=0Asystem. Y=
es, the early bleeders used a check ball seal and are proper=0Aproviding=
 you use the early rounded bleeder screw. If you use the=0Alater screw,=
 it is pointed, but the cylinder body many not mate well=0Awith it. Use=
 all original parts to insure good results. The new check=0Aball comes i=
n the rebuild kit.=0AMy thought on the 2x4 bleed method is that having t=
he system under=0Apressure overnight, the air bubble that is causing the=
 soft pedal is=0Aeventually expelled thru the reservoir tank vent hole.=
 That is the=0Aonly real "opening" in the system, but a natural escape r=
oute. Hank=0A=0A=09-----------------------------------------From: "Alan=
 Seigrist" =0ATo: [email-masked]=0ACc: "Healeys"=0ASe=
nt: Wednesday August 31 2022 4:43:43AM=0ASubject: Re: [Healeys] BN1 brak=
e system=0A=0A Actually - part of the problem is the BN1 and some BN2 bl=
eeder valves=0Aoriginally had a separate ball inside the slave=E2=80=99s=
 bleeder which the=0Alittle ball sealed the system. Over the years i=E2=
=80=99m sure that ball has=0Abeen lost and maybe you think the bleed scr=
ew is sealing the slave=0Awhen it really isn=E2=80=99t until it=E2=80=99=
s fully cinched. That also can=0Acontribute to the inability to get a fi=
rm pedal.  =0A Cheers, =0A Alan =0A On Wed, 31 Aug 2022 at 4:16 PM, Simo=
n Lachlan via Healeys  wrote:=0A=0A=09Yes, for sure, an Eezibleeder help=
s. Keep the air pressure down,=0Amaybe a bit less than suggested in the=
 destructions. =0A=0A=09Otherwise, see this, below, from one of my manua=
ls. (Curiously, not=0Ain all of them). =0A=0A=09 =E2=80=9C=E2=80=9CIf th=
e bleeding of any cylinder continues without success for=0Aa considerabl=
e time, it is possible that air is being drawn in past=0Athe bleeder scr=
ew threads. In such cases tighten the bleeder screw at=0Athe end of each=
 downward stroke* of the pedal and allow the pedal to=0Areturn fully bef=
ore re-opening it. Close the bleeder screw finally=0Aduring the last ped=
al application.=E2=80=9D =0A=0A=09 *ie to prevent air being drawn in dur=
ing the upward passage of the=0Apedal. (SDL 14/08/2019)=E2=80=9D =0A=0A=
=09 I suppose that, the brakes being old, the threads get worn and let=
=0Aair back in as the pedal goes back up. So, I tighten the bleeder as=
=0Athe fluid is still coming out, ie before the downward stroke is=0Afin=
ished. Slows the process up somewhat and tries the patience of ones=0Awi=
fely assistant. =0A=0A=09 Good luck anyhow. =0A=0A=09 Simon =0A=0A=09FRO=
M: Healeys  ON BEHALF OF David Leong via Healeys=0ASENT: 31 August 2022=
 06:19=0ATO: 'Healey List ([email-masked])' =0ASUBJECT: Re: [Hea=
leys] BN1 brake system   =0A=0A=09 Use a power pressure bleeder (I have=
 a Motive Bleeder) and tap on=0Athe slaves to loosen any air bubbles. Ma=
ke sure there are no high=0Aspots where air can get trapped and not be p=
urged out of the bleeder=0Ascrew =0A=0A=09_ DAVE_  =0A=0A=09FROM: Healey=
s  ON BEHALF OF warthodson--- via Healeys=0ASENT: Tuesday, August 30, 20=
22 5:27 PM=0ATO: [email-masked]=0ASUBJECT: [Healeys] BN1 brake s=
ystem   =0A=0A=09We have been trying for several months to bleed the bra=
kes on RHD=0ABN1, to no avail. The car has been professionally restored=
 & appears=0Ato be in excellent condition. Today, we tried again to blee=
d the=0Asystem following the shop manual. I.E. backing off the adjusters=
 on=0Athe front & back & bleeding & then readjusting the brakes. The res=
ults=0Awere the same. There seems to be an excessively large amount of p=
edal=0Atravel before the brakes are engaged & when engaged they feel=0A"=
spongy". We have access to 2 other 100's for reference. Any help=0Awould=
 be greatly appreciated. Also, we are not clear on the adjustment=0Aof t=
he free play of the master cylinder.   =0A=0A=09Gary Hodson       ______=
_________________________________________=0A Support Team.Net  [1]http:/=
/www.team.net/donate.html [2]=0A Suggested annual donation $12.75=0A=0A=
 Archive:  [3]http://www.team.net/pipermail/healeys [4] =0A[5]http://aut=
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lman/options/healeys/[email-masked]=0A

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<html><body>Agree with all suggestions.&nbsp; Sucking is better than pum=
ping, as the pump method moves such a small quantity of fluid throughout=
 the system. Yes, the early bleeders used a check ball seal and are prop=
er providing you use the early rounded bleeder screw. If you use the lat=
er screw, it is pointed, but the cylinder body many not mate well with i=
t.&nbsp; Use all original parts to insure good results. The new check ba=
ll comes in the rebuild kit.<div><br></div><div>My thought on the 2x4 bl=
eed method is that having the system under pressure overnight, the air b=
ubble that is causing the soft pedal is eventually expelled thru the res=
ervoir tank vent hole. That is the only real "opening" in the system, bu=
t a natural escape route. Hank<br><br><div class=3D"reply-new-signature"=
></div><p>-----------------------------------------</p>From: "Alan Seigr=
ist" <[email-masked]><br>To: [email-masked]<br>=
Cc: "Healeys"<br>Sent: Wednesday August 31 2022 4:43:43AM<br>Subject: Re=
: [Healeys] BN1 brake system<br><br>=0A<div>Actually - part of the probl=
em is the BN1 and some=0ABN2 bleeder valves originally had a separate ba=
ll inside the=0Aslave=E2=80=99s bleeder which the little ball sealed the=
 system.&nbsp; Over=0Athe years i=E2=80=99m sure that ball has been lost=
 and maybe you think the=0Ableed screw is sealing the slave when it real=
ly isn=E2=80=99t until it=E2=80=99s=0Afully cinched.&nbsp; That also can=
 contribute to the inability to=0Aget a firm pedal. &nbsp;</div>=0A<div>=
<br></div>=0A<div>Cheers,</div>=0A<div><br></div>=0A<div>Alan</div>=0A<d=
iv><br><div class=3D"gmail_quote">=0A<div dir=3D"ltr" class=3D"gmail_att=
r">On Wed, 31 Aug 2022 at 4:16 PM,=0ASimon Lachlan via Healeys &lt;<a>he=
[email-masked]</a>&gt;=0Awrote:<br></div>=0A<blockquote class=3D"g=
mail_quote" style=3D"margin:0px 0px 0px .8ex;border-left-width:1px;borde=
r-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204);"=
>=0A<div lang=3D"en-gb">=0A<div class=3D"m_-9048889340569780999WordSecti=
on1">=0A<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family=
:Calibri, sans-serif;">Yes, for sure, an=0AEezibleeder helps. Keep the a=
ir pressure down, maybe a bit less=0Athan suggested in the destructions.=
</span></p>=0A<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-=
family:Calibri, sans-serif;">Otherwise, see=0Athis, below, from one of m=
y manuals. (Curiously, not in all of=0Athem).</span></p>=0A<p class=3D"m=
_-9048889340569780999MsoBodyText" style=3D"margin-right:13.55pt;margin-l=
eft:5.95pt;margin-bottom:.0001pt;">=0A<span lang=3D"en-us" style=3D"font=
-size:11pt;font-family:Calibri, sans-serif;">=E2=80=9C</span><span lang=
=3D"en-us">=E2=80=9CIf the <span style=3D"letter-spacing:-.05pt;">bleedi=
ng</span> of any cylinder continues=0A<span style=3D"letter-spacing:-.05=
pt;">without</span> <span style=3D"letter-spacing:-.05pt;">success</span=
> for a <span style=3D"letter-spacing:-.05pt;">considerable</span> <span=
 style=3D"letter-spacing:-.05pt;">time,</span> it is possible that air i=
s=0Abeing drawn in past the <span style=3D"letter-spacing:-.05pt;">bleed=
er</span> <span style=3D"letter-spacing:-.05pt;">screw</span> threads. I=
n <span style=3D"letter-spacing:-.05pt;">such</span> cases tighten the b=
leeder=0A<span style=3D"letter-spacing:-.05pt;">screw</span> at the end=
 of=0Aeach downward stroke* of the pedal and <span style=3D"letter-spaci=
ng:-.05pt;">allow</span> the pedal to return fully=0Abefore re-opening i=
t. Close the <span style=3D"letter-spacing:-.05pt;">bleeder</span> <span=
 style=3D"letter-spacing:-.05pt;">screw</span> <span style=3D"letter-spa=
cing:-.05pt;">finally</span> <span style=3D"letter-spacing:-.05pt;">duri=
ng</span> the last <span style=3D"letter-spacing:-.05pt;">pedal</span> <=
span style=3D"letter-spacing:-.05pt;">application.=E2=80=9D</span></span=
></p>=0A<p class=3D"m_-9048889340569780999MsoBodyText" style=3D"margin-r=
ight:13.55pt;margin-left:5.95pt;margin-bottom:.0001pt;">=0A<span lang=3D=
"en-us" style=3D"letter-spacing:-.05pt;">*ie to prevent=0Aair being draw=
n in during the upward passage of the pedal. (SDL=0A14/08/2019)=E2=80=9D=
</span></p>=0A<p class=3D"m_-9048889340569780999MsoBodyText" style=3D"ma=
rgin-right:13.55pt;margin-left:5.95pt;margin-bottom:.0001pt;">=0A<span l=
ang=3D"en-us">I suppose that, the brakes being old, the=0Athreads get wo=
rn and let air back in as the pedal goes back up. So,=0AI tighten the bl=
eeder as the fluid is still coming out, ie before=0Athe downward stroke=
 is finished. Slows the process up somewhat and=0Atries the patience of=
 ones wifely assistant.</span></p>=0A<p class=3D"m_-9048889340569780999M=
soBodyText" style=3D"margin-right:13.55pt;margin-left:5.95pt;margin-bott=
om:.0001pt;">=0A<span lang=3D"en-us">Good luck anyhow.</span></p>=0A<p c=
lass=3D"m_-9048889340569780999MsoBodyText" style=3D"margin-right:13.55pt=
;margin-left:5.95pt;margin-bottom:.0001pt;">=0A<span lang=3D"en-us">Simo=
n</span></p>=0A<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font=
-family:Calibri, sans-serif;">&nbsp;</span></p>=0A<p class=3D"MsoNormal"=
><span style=3D"font-size:11pt;font-family:Calibri, sans-serif;">&nbsp;<=
/span></p>=0A<div>=0A<div style=3D"border-style:solid none none;border-t=
op-width:1pt;padding:3pt 0cm 0cm;border-top-color:rgb(225,225,225);">=0A=
<p class=3D"MsoNormal"><b><span lang=3D"en-us" style=3D"font-size:11pt;f=
ont-family:Calibri, sans-serif;">From:</span></b>=0A<span lang=3D"en-us"=
 style=3D"font-size:11pt;font-family:Calibri, sans-serif;">Healeys=0A&lt=
;<a style=3D"font-family:Calibri, sans-serif;">[email-masked]=
m.net</a>&gt;=0A<b style=3D"font-family:Calibri, sans-serif;">On Behalf=
 Of</b> David=0ALeong via Healeys<br><b style=3D"font-family:Calibri, sa=
ns-serif;">Sent:</b> 31 August 2022=0A06:19<br><b style=3D"font-family:C=
alibri, sans-serif;">To:</b> 'Healey List=0A(<a style=3D"font-family:Cal=
ibri, sans-serif;">[email-masked]</a>)'=0A&lt;<a style=3D"font-f=
amily:Calibri, sans-serif;">[email-masked]</a>&gt;<br><b style=
=3D"font-family:Calibri, sans-serif;">Subject:</b> Re:=0A[Healeys] BN1 b=
rake system</span></p>=0A</div>=0A</div>=0A<p class=3D"MsoNormal">&nbsp;=
</p>=0A<p class=3D"MsoNormal"><span lang=3D"en-us" style=3D"font-size:11=
pt;font-family:Calibri, sans-serif;color:rgb(31,73,125);">=0AUse a power=
 pressure bleeder (I have a Motive Bleeder) and tap on=0Athe slaves to l=
oosen any air bubbles. Make sure there are no high=0Aspots where air can=
 get trapped and not be purged out of the=0Ableeder screw</span></p>=0A<=
p class=3D"MsoNormal"><span lang=3D"en-us" style=3D"font-size:11pt;font-=
family:Calibri, sans-serif;color:rgb(31,73,125);">=0A&nbsp;</span></p>=
=0A<div>=0A<p class=3D"MsoNormal"><span lang=3D"en-us" style=3D"font-siz=
e:11pt;font-family:Calibri, sans-serif;color:rgb(31,73,125);">=0A&nbsp;<=
/span></p>=0A<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);">=0AD=
ave</span></i></b></p>=0A</div>=0A<p class=3D"MsoNormal"><span lang=3D"e=
n-us" style=3D"font-size:11pt;font-family:Calibri, sans-serif;color:rgb(=
31,73,125);">=0A&nbsp;</span></p>=0A<div>=0A<div style=3D"border-style:s=
olid none none;border-top-width:1pt;padding:3pt 0cm 0cm;border-top-color=
:rgb(225,225,225);">=0A<p class=3D"MsoNormal"><b><span lang=3D"en-us" st=
yle=3D"font-size:11pt;font-family:Calibri, sans-serif;">From:</span></b>=
=0A<span lang=3D"en-us" style=3D"font-size:11pt;font-family:Calibri, san=
s-serif;">Healeys=0A&lt;<a style=3D"font-family:Calibri, sans-serif;">he=
[email-masked]</a>&gt;=0A<b style=3D"font-family:Calibri,=
 sans-serif;">On Behalf Of</b>=0Awarthodson--- via Healeys<br><b style=
=3D"font-family:Calibri, sans-serif;">Sent:</b> Tuesday, August=0A30, 20=
22 5:27 PM<br><b style=3D"font-family:Calibri, sans-serif;">To:</b> <a s=
tyle=3D"font-family:Calibri, sans-serif;">[email-masked]</a><br>=
<b style=3D"font-family:Calibri, sans-serif;">Subject:</b> [Healeys]=0AB=
N1 brake system</span></p>=0A</div>=0A</div>=0A<p class=3D"MsoNormal"><s=
pan lang=3D"en-us">&nbsp;</span></p>=0A<div>=0A<div>=0A<p class=3D"MsoNo=
rmal"><span lang=3D"en-us" style=3D"font-family:'Comic Sans MS';color:#0=
00000;">We have been=0Atrying for several months to bleed the brakes on=
 RHD BN1, to no=0Aavail. The car has been professionally restored &amp;=
 appears to be in=0Aexcellent condition. Today, we tried again to bleed=
 the system=0Afollowing the shop manual. I.E. backing off the adjusters=
 on the=0Afront &amp; back &amp; bleeding &amp; then readjusting the bra=
kes. The results=0Awere the same. There seems to be an excessively large=
 amount of=0Apedal travel before the brakes are engaged &amp; when engag=
ed they feel=0A"spongy". We have access to 2 other 100's for reference.=
 Any help=0Awould be greatly appreciated. Also, we are not clear on the=
=0Aadjustment of the free play of the master cylinder. </span></p>=0A<di=
v>=0A<p class=3D"MsoNormal"><span lang=3D"en-us" style=3D"font-family:'C=
omic Sans MS';color:#000000;">Gary=0AHodson&nbsp; &nbsp;</span></p>=0A</=
div>=0A</div>=0A</div>=0A</div>=0A</div>=0A_____________________________=
__________________<br>=0ASupport Team.Net <a href=3D"http://www.team.net=
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.team.net/donate.html</a><br>=0ASuggested annual donation&nbsp; $12.75<b=
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