Subject: Re: [Healeys] 100 brakes

From: Hank Leach via Healeys <[email-masked]>
Date: Mon, 13 Mar 2023 19:40:23 +0000 boundary="=_f7e77d21d9643c4d2435797406733ab5" p2z4obDsVcqLMifyU+GNx7r80/C/YM+R0HKX7kvqEDWLrVhGEDrmjtmHfwaYHb8pKajCH4qvU6NVO7dZVPCbx8OqqcqlwTXewkw=

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It sure sounds like air. The 100 system is difficult to bleed due to=0At=
he placement of the wheel cylinders and bleeders. I like to pull out=0At=
he fluid rather than push out the stuff. Use something like a Mityvac=0A=
to do this starting at the right rear. =0AThe smallest bubbles will crea=
te a lot of pedal travel but if it pumps=0Aup to a hard pedal then its f=
or sure air in the system. Keep the cap=0Aon the canister when bleeding=
 and check under the canister for a wet=0Afinger. Moss has good seals fo=
r that purpose.=0AThe word "new" in brake systems scares me, as there ar=
e so many crappy=0Areplacement parts made in foreign countries that look=
 like good new=0Aitems. I prefer to rebuilt original or sleeve them if n=
ecessary to use=0Athe original items. The seal kits are another story. C=
an you find good=0AGirling repair kits. Many of the foreign replacements=
 are knockoffs of=0Athe original. Use TRW (they bought Lockheed) only-no=
t unknown=0Abrands...even new Lucas is not old Lucas.=0AI pumped and pul=
led gallons of brake fluid thru a MKI bugeye system=0Aonly to find the s=
eal stuck in the back of the master cylinder because=0Athe Moss purchase=
d seals were too big! Use TRW. When I got the=0Areplacement seals from t=
hem, they had the same number stamp on the=0Aseal. They are using the sa=
me molds to make the seals.=0ADid you use red grease on all the threaded=
 fittings? Check all for a=0Awet finger. Hope this info lessens your fru=
stration. A word that goes=0Ahand in hand with brake bleeding. Hank=0A=
=0A=09-----------------------------------------From: "warthodson--- via=
=0AHealeys" =0ATo: "[email-masked]"=0ACc: =0ASent: Monday March=
 13 2023 12:07:18PM=0ASubject: [Healeys] 100 brakes=0A=0A We are having=
 a very difficult time adjusting & bleeding the brakes=0Aon a friend's B=
N1. The car has recently under a full ground up=0Arestoration so things=
 like brake lines including flex lines are new,=0Aseals in the brake cyl=
inders are new, the master cyl. is new, etc. We=0Ableed the system so ma=
ny times different way that I have lost track. =0AWe have adjusted the f=
ree play to assure that the plunger is able to=0Areturn to the full "off=
" position. When we adjust the operating rod to=0Aachieve the specified=
 1/8" free movement at the pedal. We have=0Aadjusted the brake shoes to=
 have a very slight drag at rest. Our issue=0Ais: Excessive brake pedal=
 travel before the brakes begin to be=0Aeffective.  Pumping the brakes t=
emporarily improve the pedal travel=0Aissue, which we think indicates ai=
r still in the system. We are not=0Ahaving any leaks & the reservoir por=
t is functioning correctly, IE: no=0Alocking up of the brakes.  Gary

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<html><body>It sure sounds like air. The 100 system is difficult to blee=
d due to the placement of the wheel cylinders and bleeders. I like to pu=
ll out the fluid rather than push out the stuff. Use something like a Mi=
tyvac to do this starting at the right rear.&nbsp;<div><br></div><div>Th=
e smallest bubbles will create a lot of pedal travel but if it pumps up=
 to a hard pedal then its for sure air in the system. Keep the cap on th=
e canister when bleeding and check under the canister for a wet finger.&=
nbsp; Moss has good seals for that purpose.</div><div><br></div><div>The=
 word "new" in brake systems scares me, as there are so many crappy repl=
acement parts made in foreign countries that look like good new items. I=
 prefer to rebuilt original or sleeve them if necessary to use the origi=
nal items. The seal kits are another story. Can you find good Girling re=
pair kits. Many of the foreign replacements are knockoffs of the origina=
l. Use TRW (they bought Lockheed) only-not unknown brands...even new Luc=
as is not old Lucas.</div><div><br></div><div>I pumped and pulled gallon=
s of brake fluid thru a MKI bugeye system only to find the seal stuck in=
 the back of the master cylinder because the Moss purchased seals were t=
oo big! Use TRW. When I got the replacement seals from them, they had th=
e same number stamp on the seal. They are using the same molds to make t=
he seals.</div><div><br></div><div>Did you use red grease on all the thr=
eaded fittings? Check all for a wet finger. Hope this info lessens your=
 frustration. A word that goes hand in hand with brake bleeding. Hank<br=
><br><div class=3D"reply-new-signature"></div><p>-----------------------=
------------------</p>From: "warthodson--- via Healeys" <[email-masked]=
eam.net><br>To: "[email-masked]"<br>Cc: <br>Sent: Monday March 1=
3 2023 12:07:18PM<br>Subject: [Healeys] 100 brakes<br><br>=0A<div style=
=3D"color:#000000;font:12pt 'Comic Sans MS', sans-serif;">We=0Aare havin=
g a very difficult time adjusting &amp; bleeding the brakes on=0Aa frien=
d's BN1.=0A<div>The car has recently under a full ground up restoration=
 so=0Athings like brake lines including flex lines are new, seals in the=
=0Abrake cylinders are new, the master cyl. is new, etc.</div>=0A<div>We=
 bleed the system so many times different way that I have=0Alost track.&=
nbsp;</div>=0A<div>We have adjusted the free play to assure that the plu=
nger is=0Aable to return to the full "off" position.</div>=0A<div>When w=
e adjust the operating rod to achieve the specified 1/8"=0Afree movement=
 at the pedal.</div>=0A<div>We have adjusted the brake shoes to have a v=
ery slight drag at=0Arest.</div>=0A<div>Our issue is:</div>=0A<div>Exces=
sive brake pedal travel before the brakes begin to be=0Aeffective.&nbsp;=
</div>=0A<div>Pumping the brakes temporarily improve the pedal travel is=
sue,=0Awhich we think indicates air still in the system.</div>=0A<div>We=
 are not having any leaks &amp; the reservoir port is=0Afunctioning corr=
ectly, IE: no locking up of the brakes.&nbsp;</div>=0A<div>Gary</div>=0A=
<div>&nbsp; &nbsp; &nbsp;&nbsp;</div>=0A</div>=0A</[email-masked]=
t></div></body></html>

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