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The problem with my O/D was not related to hot days. I would start the =
car cold and drive for a while. The O/D would work fine. But after =
everything was hot, if I disengaged the O/D, it would not reengage. =
Replacing the accumulator housing and piston fixed that.
=20
There are two adjustments.
=20
1. The setting lever that activates the O/D when the toggle switch is =
closed. That is the one that is supposed to be set with a 3/16 drill =
bit. The setting lever moves when the toggle switch is closed and the =
solenoid pulls the arm on the valve operating shaft up. The other end of =
the setting lever has a paddle inside of the O/D that pushes the shaft =
of the operating valve up. On top of that shaft is a ball bearing, =
plunger and spring. It can be accessed by removing a bolt on the top =
right hand side of the O/D. The movement of the ball bearing is supposed =
to be 1/32 or .040. I don=E2=80=99t have the equipment to measure the =
movement and 1/32 is not perceptible to my eyes. Never really has been.
=20
This is my second healey, I had one in high school. I have never been =
able to use a drill bit to adjust the setting lever. If I line up the =
hole in the lever with the hole in the O/D casing, the O/D will not =
engage. For my O/D, the lever needs to be rotated clockwise slightly =
past the hole in the casing. Setting it is trial and error.
=20
2. The throttle switch is controlled by the accelerator pedal. I need to =
adjust that switch because my O/D is disengaging as soon as I open the =
toggle switch on the dash board. It should not do that.
=20
John
=E2=80=9962 Bt7
=20
From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of Tom
Sent: Sunday, July 2, 2023 2:53 PM
To: m.g.sharp@sympatico.ca
Cc: healeys@autox.team.net
Subject: Re: [Healeys] Overdrive disengages
=20
I noticed my overdrive disengaging when I've run it for a while on a hot =
day, so this discussion has been interesting.
=20
Are we discussing two different adjustments, one on the overdrive unit =
itself, using the 3/16 drill bit method described by Norm Nock in his =
tech tips book, and the other the switch controlled by the accelerator =
pedal?
=20
I'm interested in the former right now, so if you could clarify the .040 =
or 1/32 you're measuring, that would help.
=20
thanks!
=20
Tom
=20
=20
On Sun, Jul 2, 2023 at 5:10=E2=80=AFPM m.g.sharp--- via Healeys =
Perhaps I am missing something, but 0.040=E2=80=9D is not equivalent to =
3/16=E2=80=9D
=20
From: Healeys <healeys-bounces@autox.team.net =
Healeys
Sent: Sunday, July 2, 2023 1:24 PM
Subject: Re: [Healeys] Overdrive disengages
=20
Bob's got the procedure. Use a .040" feeler gauge (or 3/16 drill) under =
the throttle stop (1/5 of the throttle opening). Connect a 12V test =
light to the fuse box and the top terminal on the throttle switch. (Good =
example in Haynes Manual page 124). Light should go out at this =
adjustment. Solenoid adjustment should be as Bob describes and work =
smoothly-no binding. Hank
-----------------------------------------
From: "Bob Spidell"=20
Cc:=20
Sent: Sunday July 2 2023 9:20:10AM
Subject: Re: [Healeys] Overdrive disengages
Hi John,
What keeps the O/D from disengaging immediately when you open the dash =
switch is the 'throttle switch.' When the O/D is actuated there is a =
parallel circuit that will keep the O/D activated until you press the =
accelerator pedal, theoretically preventing reverse thrust from damaging =
the O/D. The parallel circuit runs through the throttle switch on the =
scuttle (firewall); it sounds like you need to adjust it. It's a simple =
adjustment using a certain diameter--I don't recall it offhand, but I'll =
look it up if you need it--drill bit under the throttle stop levers. =
There's a small shaft off the throttle mechanism that opens this =
switch--it's just a set of points and a cam inside--with a lever with a =
pinch clamp. Just loosen the pinch clamp, set the bit under the throttle =
stop plate and tighten the clamp.
If you O/D is actuating consistently within a couple seconds or so then =
your solenoid, operating lever, operating shaft and ball 'valve' are =
correct. The 'stick-a-drill-bit-through-the-lever-into-the-housing' =
method is notoriously unreliable; the proper setting is best achieved by =
measuring the lift--IIRC, it's 1/32" but not sure--of the operating =
shaft at the top of the O/D hydraulic section.
Bob
On 7/1/2023 11:55 AM, John Spaur via Healeys wrote:
Hi All,
=20
My overdrive is functioning again after replacing the accumulator =
housing and piston but it is exhibiting an odd behavior which I believe =
is related to the adjustment of the setting lever.
=20
When I open the toggle switch, the OD will sometimes disengage =
immediately instead of waiting until I blip the accelerator. When I =
adjusted the setting lever, I could not use a 3/16=E2=80=9D dowel to =
line up the lever with the hole in the housing. I had to advance the =
lever clockwise a bit to get the OD to engage when the toggle switch was =
closed. This has always been the case and this issue is mentioned in =
some articles.
=20
Do I need to fiddle with the setting lever adjustment some more? If so, =
do I rotate it clockwise or counter clockwise?
=20
Any other thoughts?
=20
TIA,
John Spaur
=E2=80=9962 BT7
=20
=20
_______________________________________________
Archive: http://www.team.net/pipermail/healeys =
http://autox.team.net/archive/healeys
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>The problem with my O/D was not related to hot days. I would start the =
car cold and drive for a while. The O/D would work fine. But after =
everything was hot, if I disengaged the O/D, it would not reengage. =
Replacing the accumulator housing and piston fixed =
that.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>There are two adjustments.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>1. The setting lever that activates the O/D when the toggle switch is =
closed. That is the one that is supposed to be set with a 3/16 drill =
bit. The setting lever moves when the toggle switch is closed and the =
solenoid pulls the arm on the valve operating shaft up. The other end of =
the setting lever has a paddle inside of the O/D that pushes the shaft =
of the operating valve up. On top of that shaft is a ball bearing, =
plunger and spring. It can be accessed by removing a bolt on the top =
right hand side of the O/D. The movement of the ball bearing is supposed =
to be 1/32 or .040. I don=E2=80=99t have the equipment to measure the =
movement and 1/32 is not perceptible to my eyes. Never really has =
been.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>This is my second healey, I had one in high school. I have never been =
able to use a drill bit to adjust the setting lever. If I line up the =
hole in the lever with the hole in the O/D casing, the O/D will not =
engage. For my O/D, the lever needs to be rotated clockwise slightly =
past the hole in the casing. Setting it is trial and =
error.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>2. The throttle switch is controlled by the accelerator pedal. I need =
to adjust that switch because my O/D is disengaging as soon as I open =
the toggle switch on the dash board. It should not do =
that.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>John<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>=E2=80=9962 Bt7<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p> </o:p></span></p><p class=3DMsoNormal><b><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> =
Healeys [mailto:healeys-bounces@autox.team.net] <b>On Behalf Of =
</b>Tom<br><b>Sent:</b> Sunday, July 2, 2023 2:53 PM<br><b>To:</b> =
m.g.sharp@sympatico.ca<br><b>Cc:</b> =
healeys@autox.team.net<br><b>Subject:</b> Re: [Healeys] Overdrive =
disengages<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>I =
noticed my overdrive disengaging when I've run it for a while on a hot =
day, so this discussion has been interesting.<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Are we discussing two different adjustments, one on =
the overdrive unit itself, using the 3/16 drill bit method =
described by Norm Nock in his tech tips book, and the other the switch =
controlled by the accelerator pedal?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>I'm interested in the former right now, so if you =
could clarify the .040 or 1/32 you're measuring, that would =
help.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>thanks!<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Tom<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Sun, Jul 2, 2023 at 5:10=E2=80=AFPM m.g.sharp--- via Healeys <<a =
href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>Perhaps I am missing something, but 0.040=E2=80=9D is not =
equivalent to 3/16=E2=80=9D<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA> <o:p></o:p></span></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b>=
Healeys <<a href=3D"mailto:healeys-bounces@autox.team.net"; =
target=3D"_blank">healeys-bounces@autox.team.net</a>> <b>On Behalf Of =
</b>Hank Leach via Healeys<br><b>Sent:</b> Sunday, July 2, 2023 1:24 =
PM<br><b>To:</b> 'Bob Spidell' <<a =
href=3D"mailto:bspidell@comcast.net"; =
target=3D"_blank">bspidell@comcast.net</a>><br><b>Cc:</b> '<a =
href=3D"mailto:healeys@autox.team.net"; =
target=3D"_blank">healeys@autox.team.net</a>' <<a =
href=3D"mailto:healeys@autox.team.net"; =
target=3D"_blank">healeys@autox.team.net</a>><br><b>Subject:</b> Re: =
[Healeys] Overdrive disengages<span =
lang=3DEN-CA><o:p></o:p></span></p></div></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA> <o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;margin-bottom:12.0pt'><span =
lang=3DEN-CA>Bob's got the procedure. Use a .040" feeler =
gauge (or 3/16 drill) under the throttle stop (1/5 of the throttle =
opening). Connect a 12V test light to the fuse box and the top =
terminal on the throttle switch. (Good example in Haynes Manual page =
124). Light should go out at this adjustment. Solenoid adjustment should =
be as Bob describes and work smoothly-no binding. =
Hank<o:p></o:p></span></p><p><span =
lang=3DEN-CA>-----------------------------------------<o:p></o:p></span><=
/p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;margin-bottom:12.0pt'><span =
lang=3DEN-CA>From: "Bob Spidell" <br>To: <a =
href=3D"mailto:healeys@autox.team.net"; =
target=3D"_blank">healeys@autox.team.net</a><br>Cc: <br>Sent: Sunday =
July 2 2023 9:20:10AM<br>Subject: Re: [Healeys] Overdrive =
disengages<br><br>Hi John,<br><br>What keeps the O/D from disengaging =
immediately when you open the dash switch is the 'throttle switch.' When =
the O/D is actuated there is a parallel circuit that will keep the O/D =
activated until you press the accelerator pedal, theoretically =
preventing reverse thrust from damaging the O/D. The parallel circuit =
runs through the throttle switch on the scuttle (firewall); it sounds =
like you need to adjust it. It's a simple adjustment using a certain =
diameter--I don't recall it offhand, but I'll look it up if you need =
it--drill bit under the throttle stop levers. There's a small shaft off =
the throttle mechanism that opens this switch--it's just a set of points =
and a cam inside--with a lever with a pinch clamp. Just loosen the pinch =
clamp, set the bit under the throttle stop plate and tighten the =
clamp.<br><br>If you O/D is actuating consistently within a couple =
seconds or so then your solenoid, operating lever, operating shaft and =
ball 'valve' are correct. The =
'stick-a-drill-bit-through-the-lever-into-the-housing' method is =
notoriously unreliable; the proper setting is best achieved by measuring =
the lift--IIRC, it's 1/32" but not sure--of the operating shaft at =
the top of the O/D hydraulic =
section.<br><br>Bob<o:p></o:p></span></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>On 7/1/2023 11:55 AM, John Spaur via Healeys =
wrote:<o:p></o:p></span></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>Hi All,<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA> <o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>My overdrive is functioning again after replacing the =
accumulator housing and piston but it is exhibiting an odd behavior =
which I believe is related to the adjustment of the setting =
lever.<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA> <o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>When I open the toggle switch, the OD will sometimes =
disengage immediately instead of waiting until I blip the accelerator. =
When I adjusted the setting lever, I could not use a 3/16=E2=80=9D dowel =
to line up the lever with the hole in the housing. I had to advance the =
lever clockwise a bit to get the OD to engage when the toggle switch was =
closed. This has always been the case and this issue is mentioned in =
some articles.<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA> <o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>Do I need to fiddle with the setting lever adjustment some =
more? If so, do I rotate it clockwise or counter =
clockwise?<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA> <o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>Any other thoughts?<o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA> <o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>TIA,<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>John Spaur<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>=E2=80=9962 BT7<o:p></o:p></span></p></div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA> <o:p></o:p></span></p></blockquote><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;margin-bottom:12.0pt'><span =
lang=3DEN-CA><o:p> </o:p></span></p></div></div><p =
class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>__________________________________________=
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