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Hey Bob,Doesn't sound like the pump - 400 psi is good, but this can be rem=
oved/resealed in situ.Your clue would be that it might engage at high roads=
peed but not at low.
I had a solenoid that was 'weak' and behaved like yours.=C2=A0 It functione=
d, but resistance was high and pull force was low.It might throw but have m=
arginal force to open the ball valve when under pressure.
Best way to isolate this is to check resistance or current of the solenoid.
Good Luck!------------------------------
Date: Thu, 17 Sep 2026 09:13:35 -0700From: Bob Spidell <bspidell@comcast.ne=
t>
To: Healeys <healeys@autox.team.net>
Subject: [Healeys] Seeking List Wisdom
I've had an intermittent issue with my BJ8 O/D. It doesn't engage=20
reliably, but does maybe 1 out of 10 attempts. I think I've ruled out=20
electrical issues, as the solenoid activates reliably. I checked the=20
hydraulic pressure, it's just under 400 PSI. I know that's low per the=20
shop manual (470-490), but it has worked reliably for years and had the=20
same pressure after an overhaul.
Q1: Any ideas why it has stopped engaging after years and thousands of=20
miles?
Q2: If it's the pump, can these be changed out in situ?
TIA,
Bob
=20
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<html><head></head><body><div class=3D"yahoo-style-wrap" style=3D"font-fami=
ly:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div class=
=3D"ydpb2e912b7yahoo-style-wrap" style=3D"font-family:Helvetica Neue, Helve=
tica, Arial, sans-serif;font-size:16px;"><div></div>
<div dir=3D"ltr" data-setdir=3D"false"><span style=3D"font-size: 13=
px;">Hey Bob,</span></div><div dir=3D"ltr" data-setdir=3D"false"><span styl=
e=3D"font-size: 13px;">Doesn't sound like the pump - 400 psi is good, but t=
his can be removed/resealed in situ.</span></div><div dir=3D"ltr" data-setd=
ir=3D"false"><span style=3D"font-size: 13px;">Your clue would be that it mi=
ght engage at high roadspeed but not at low.</span></div><div dir=3D"ltr" d=
ata-setdir=3D"false"><span style=3D"font-size: 13px;"><br></span></div><div=
dir=3D"ltr" data-setdir=3D"false"><span style=3D"font-size: 13px;">I had a=
solenoid that was 'weak' and behaved like yours. It functioned, but =
resistance was high and pull force was low.</span></div><div dir=3D"ltr" da=
ta-setdir=3D"false"><span style=3D"font-size: 13px;">It might throw but hav=
e marginal force to open the ball valve when under pressure.</span></div><d=
iv dir=3D"ltr" data-setdir=3D"false"><span style=3D"font-size: 13px;"><br><=
/span></div><div dir=3D"ltr" data-setdir=3D"false"><span style=3D"font-size=
: 13px;">Best way to isolate this is to check resistance or current of the =
solenoid.</span></div><div dir=3D"ltr" data-setdir=3D"false"><span style=3D=
"font-size: 13px;"><br></span></div><div dir=3D"ltr" data-setdir=3D"false">=
<span style=3D"font-size: 13px;">Good Luck!</span></div><div dir=3D"ltr" da=
ta-setdir=3D"false"><div><div dir=3D"ltr">------------------------------<br=
></div><div dir=3D"ltr"><span style=3D"font-size: 13px;">Date: Thu, 17 Sep =
2026 09:13:35 -0700</span></div></div></div></div><div id=3D"ydpe4981f03yah=
oo_quoted_0398828782" class=3D"ydpe4981f03yahoo_quoted"><div style=3D"font-=
family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;"><div=
><div dir=3D"ltr">From: Bob Spidell <<a href=3D"mailto:bspidell@comcast.=
net" rel=3D"nofollow" target=3D"_blank">bspidell@comcast.net</a>><br></d=
iv><div dir=3D"ltr">To: Healeys <<a href=3D"mailto:healeys@autox.team.ne=
t" rel=3D"nofollow" target=3D"_blank">healeys@autox.team.net</a>><br></d=
iv><div dir=3D"ltr">Subject: [Healeys] Seeking List Wisdom<br></div><div di=
r=3D"ltr">Message-ID: <<a href=3D"mailto:a0c0f784-b253-4e6a-aea9-e247521=
84cc3@comcast.net" rel=3D"nofollow" target=3D"_blank">a0c0f784-b253-4e6a-ae=
a9-e24752184cc3@comcast.net</a>><br></div><div dir=3D"ltr">Content-Type:=
text/plain; charset=3DUTF-8; format=3Dflowed<br></div><div dir=3D"ltr"><br=
></div><div dir=3D"ltr">I've had an intermittent issue with my BJ8 O/D. It =
doesn't engage <br></div><div dir=3D"ltr">reliably, but does maybe 1 out of=
10 attempts. I think I've ruled out <br></div><div dir=3D"ltr">electrical =
issues, as the solenoid activates reliably. I checked the <br></div><div di=
r=3D"ltr">hydraulic pressure, it's just under 400 PSI. I know that's low pe=
r the <br></div><div dir=3D"ltr">shop manual (470-490), but it has worked r=
eliably for years and had the <br></div><div dir=3D"ltr">same pressure afte=
r an overhaul.<br></div><div dir=3D"ltr"><br></div><div dir=3D"ltr">Q1: Any=
ideas why it has stopped engaging after years and thousands of <br></div><=
div dir=3D"ltr">miles?<br></div><div dir=3D"ltr"><br></div><div dir=3D"ltr"=
>Q2: If it's the pump, can these be changed out in situ?<br></div><div dir=
=3D"ltr"><br></div><div dir=3D"ltr">TIA,<br></div><div dir=3D"ltr">Bob<br><=
/div><div dir=3D"ltr"><br></div></div>
</div>
</div></div></body></html>
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