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No proportioning valve in a Healey..Unless yours is a Mk IV 3000.
Michael S
BN1 #174
On Thu, Jun 4, 2015 at 1:17 PM, Tom <ah3000me@gmail.com> wrote:
> The PO converted to DOT5 (Silicone) about 10 years ago. The shop replace=
d
> the master brake cylinder, all the flex hoses, the rear wheel cylinders,
> the servo (I think), and flushed the whole system before adding DOT5. I
> replaced the front calipers about two years ago.
>
> I agree, it would be unusual to have both front flex hoses go bad at the
> same time.
>
> Is it possible that the proportioning valve is bad? I'm puzzled why the
> rear brakes are fine and the front brakes are locking. Or is that just a
> red herring?
>
> - Tom
>
>
>
> On Thu, Jun 4, 2015 at 9:44 AM, Michael <michael.salter@gmail.com> wrote:
>
>> Yes Tom,
>> Old flex hoses although, unusual to have both fronts go bad at the same
>> time.
>> Michael S
>> BN1 #174
>> ------------------------------
>> From: Tom <ah3000me@gmail.com>
>> Sent: =E2=80=8E4/=E2=80=8E06/=E2=80=8E2015 9:42 a.m.
>> To: Healey Mail List <healeys@autox.team.net>
>> Subject: [Healeys] BJ8 front brake lockup
>>
>> Hello all,
>>
>> I've had a bit of problem with the brakes locking this season. After it
>> happened the second time, I pulled the vacuum line form the servo and
>> plugged it. I put a few hundred miles on the car with the vacuum line o=
ff
>> the servo, and the brakes have worked great.
>>
>> This morning, I backed out the driveway, and I noticed the car wouldn't
>> roll downhill. I pulled it back into the garage, and jacked it up to se=
e
>> where the wheels were locking.
>>
>> The rear wheels turned freely, slight drag on the right rear.
>>
>> By hand, the front wheels would not turn at all. Neither one.
>>
>> Does unplugging vacuum from the servo completely remove the servo from
>> the equation? Could a servo without vacuum still cause locking problems=
?
>> I believe my servo is a Lockheed unit, put on by the PO, and the servo
>> doesn't look that old.
>>
>> The front calipers are recent rebuilds (2 years ago). Anything else
>> that could cause the front brakes to lock up?
>>
>> thanks!
>>
>> Tom
>>
>>
>>
>>
>
--=20
*If you can't fix it with a hammer, you've got an electrical problem.*
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:comic sa=
ns ms,sans-serif;font-size:small">No proportioning valve in a Healey..Unles=
s yours is a Mk IV 3000.<br><br></div><div class=3D"gmail_default" style=3D=
"font-family:comic sans ms,sans-serif;font-size:small">Michael S<br></div><=
div class=3D"gmail_default" style=3D"font-family:comic sans ms,sans-serif;f=
ont-size:small">BN1 #174<br></div></div><div class=3D"gmail_extra"><br><div=
class=3D"gmail_quote">On Thu, Jun 4, 2015 at 1:17 PM, Tom <span dir=3D"ltr=
"><<a href=3D"mailto:ah3000me@gmail.com"; target=3D"_blank">ah3000me@gmai=
l.com</a>></span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"m=
argin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"l=
tr">The PO converted to DOT5 (Silicone) about 10 years ago.=C2=A0 The shop =
replaced the master brake cylinder, all the flex hoses, the rear wheel cyli=
nders, the servo (I think), and flushed the whole system before adding DOT5=
.=C2=A0 I replaced the front calipers about two years ago.<div><br></div><d=
iv>I agree, it would be=C2=A0<span style=3D"font-family:Calibri,sans-serif;=
font-size:14.6666669845581px">unusual to have both front flex hoses go bad =
at the same time.</span></div><div><span style=3D"font-family:Calibri,sans-=
serif;font-size:14.6666669845581px"><br></span></div><div><span style=3D"fo=
nt-family:Calibri,sans-serif;font-size:14.6666669845581px">Is it possible t=
hat the proportioning valve is bad? =C2=A0 I'm puzzled why the rear bra=
kes are fine and the front brakes are locking.=C2=A0 Or is that just a red =
herring?</span></div><span class=3D"HOEnZb"><font color=3D"#888888"><div><s=
pan style=3D"font-family:Calibri,sans-serif;font-size:14.6666669845581px"><=
br></span></div><div><span style=3D"font-family:Calibri,sans-serif;font-siz=
e:14.6666669845581px">- Tom</span></div><div><span style=3D"font-family:Cal=
ibri,sans-serif;font-size:14.6666669845581px"><br></span></div><div><span s=
tyle=3D"font-family:Calibri,sans-serif;font-size:14.6666669845581px"><br></=
span></div></font></span></div><div class=3D"HOEnZb"><div class=3D"h5"><div=
class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Thu, Jun 4, 2015 a=
t 9:44 AM, Michael <span dir=3D"ltr"><<a href=3D"mailto:michael.salter@g=
mail.com" target=3D"_blank">michael.salter@gmail.com</a>></span> wrote:<=
br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left=
:1px #ccc solid;padding-left:1ex"><div><div><div style=3D"font-family:Calib=
ri,sans-serif;font-size:11pt">Yes Tom,<br>Old flex hoses although, unusual =
to have both fronts go bad at the same time.<br>Michael S<br>BN1 #174</div>=
</div><div dir=3D"ltr"><hr><span style=3D"font-family:Calibri,sans-serif;fo=
nt-size:11pt;font-weight:bold">From: </span><span style=3D"font-family:Cali=
bri,sans-serif;font-size:11pt"><a href=3D"mailto:ah3000me@gmail.com"; target=
=3D"_blank">Tom</a></span><br><span style=3D"font-family:Calibri,sans-serif=
;font-size:11pt;font-weight:bold">Sent: </span><span style=3D"font-family:C=
alibri,sans-serif;font-size:11pt">=E2=80=8E4/=E2=80=8E06/=E2=80=8E2015 9:42=
a.m.</span><br><span style=3D"font-family:Calibri,sans-serif;font-size:11p=
t;font-weight:bold">To: </span><span style=3D"font-family:Calibri,sans-seri=
f;font-size:11pt"><a href=3D"mailto:healeys@autox.team.net"; target=3D"_blan=
k">Healey Mail List</a></span><br><span style=3D"font-family:Calibri,sans-s=
erif;font-size:11pt;font-weight:bold">Subject: </span><span style=3D"font-f=
amily:Calibri,sans-serif;font-size:11pt">[Healeys] BJ8 front brake lockup</=
span><br><br></div><div><div><div dir=3D"ltr"><div>Hello all,</div><div><br=
></div>I've had a bit of problem with the brakes locking this season.=
=C2=A0 After it happened the second time, I pulled the vacuum line form the=
servo and plugged it.=C2=A0 I put a few hundred miles on the car with the =
vacuum line off the servo, and the brakes have worked great.<div><br></div>=
<div>This morning, I backed out the driveway, and I noticed the car wouldn&=
#39;t roll downhill.=C2=A0 I pulled it back into the garage, and jacked it =
up to see where the wheels were locking.</div><div><br></div><div>The rear =
wheels turned freely, slight drag on the right rear.</div><div><br></div><d=
iv>By hand, the front wheels would not turn at all.=C2=A0 Neither one.</div=
><div><br></div><div>Does unplugging vacuum from the servo completely remov=
e the servo from the equation?=C2=A0 Could a servo without vacuum still cau=
se locking problems? =C2=A0 I believe my servo is a Lockheed unit, put on b=
y the PO, and the servo doesn't look that old.</div><div><br></div><div=
>The front calipers are recent rebuilds (2 years ago). =C2=A0 Anything else=
that could cause the front brakes to lock up?</div><div><br></div><div>tha=
nks!</div><div><br></div><div>Tom</div><div><br></div><div><br></div><div><=
br></div></div>
</div></div></div></blockquote></div><br></div>
</div></div></blockquote></div><br><br clear=3D"all"><br>-- <br><div class=
=3D"gmail_signature"><div dir=3D"ltr"><div><div dir=3D"ltr"><i><font size=
=3D"2"><span style=3D"color:black">If you can't fix it with a hammer, y=
ou've got an electrical problem.</span></font></i><br><br><div></div><d=
iv></div><div></div></div></div></div></div>
</div>
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