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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,
>
> 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.
>
> 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 3/16â?? 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.
>
> Do I need to fiddle with the setting lever adjustment some more? If
> so, do I rotate it clockwise or counter clockwise?
>
> Any other thoughts?
>
> TIA,
>
> John Spaur
>
> â??62 BT7
>
>
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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<br>
<br>
<br>
<div class="moz-cite-prefix">On 7/1/2023 11:55 AM, John Spaur via
Healeys wrote:<br>
</div>
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<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">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></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">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 3/16â?? 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></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">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></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">Any other thoughts?<o:p></o:p></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">TIA,<o:p></o:p></p>
<p class="MsoNormal">John Spaur<o:p></o:p></p>
<p class="MsoNormal">â??62 BT7<o:p></o:p></p>
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<br>
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<br>
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