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<div>The combined master cylinder/supply tank on the BN4 is pitiful, =
useless, especially if you need to bleed the brakes. Guess it was done to =
save money, as usual. Recommend that you change over to the 3000 set up =
which would have a separate reservoir tank, and yes, one that could leak at=
the bottom.</div>
<div> </div>
<div>After these cars sit for a long =
time things dry out, shrink; then upon driving they let the fluids out. Its=
a BMC feature. Pull the front wheel (fluid on rim?) and check both sides =
of the caliper and bleed nipple, then move up to that master cylinder =
fitting. Driving always reveals issues. Good luck Ira, Hank</div>
<div><br>-------------------- <br><br>From: "Harold Manifold" =
<manifold@telus.net> <br>To: "vfwac@vfw.org" <eyera3000@gmail.=
com> <br>Cc: "Ahealey help" <healeys@autox.team.net> <br>Sent: =
September 6, 2026 at 9:09 AM PDT <br>Subject: Re: [Healeys] Brake fluid =
</div>
<div>Hi Ira,<br><br>It could be the fittings at the bottom of the =
reservoir tank, which is located near the front left.<br><br>Best,=
<br>Harold<br><br></div>
<div> </div>
<div class=3D"gmail_quote =
gmail_quote_container">
<div class=3D"gmail_attr">On Sat, Sep 5, 2026 at =
9:00=E2=80=AFPM <a href=3D"mailto:vfwac@vfw.org">vfwac@vfw.org</a> <<a =
href=3D"mailto:eyera3000@gmail.com">eyera3000@gmail.com</a>> =
wrote:</div>
<blockquote class=3D"gmail_quote" style=3D"margin: 0px 0px 0px=
0.8ex; border-left: 1px solid rgb(204,204,204); padding-left: 1ex;">
<div>
<div> </div>
<div>I drove my BN4 today after a five month rest I drove=
to our local ABFM. On my way back I noticed that the brake pedal felt =
harder and the front disc brakes had a longer stopping distance. Before I =
pulled it into the garage I noticed brake fluid on the driveway pan, so I =
checked the reservoir. It was 3/4 empty. The bottom of the tank was dry. =
Any ideas on where I should look? The leak is towards the front left. Could=
it be a leaking caliper?</div>
<div> </div>
<div>Ira =
Erbs<br>Milwaukie, OR<br>1959 Austin Healey 100-6</div>
</div>
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