--===============6178190335406753618==
--000000000000e7fe200616f3f05d
Content-Transfer-Encoding: quoted-printable
Okay, then it is confirmed that neither the clutch (on the flywheel) nor
the overdrive cone clutch (in it's normal drive condition) are producing
the slippage.
>From this we can conclude that even when the overdrive solenoid is *not*
energized the slippage is occurring at the overdrive cone clutch and that
for some reason hydraulic pressure is finding its way into the overdrive
operating cylinders even when the overdrive operating valve is closed.
This can be caused by leakage past operating the valve or residual pressure=
.
The question of residual pressure can be resolved by checking that the
bleed hole in the bottom of the long overdrive valve push rod is not
blocked.
Whether or not hydraulic pressure is leaking past the operating valve ball
can be checked by ensuring that the ball is clearly on its seat when the
operating valve is *not * energized.
M
On Thu., Apr. 25, 2024, 3:38 p.m. Simon Lachlan, <
simon.lachlan@alexarevel.plus.com> wrote:
> Of course. Isn=E2=80=99t that how I got the 520psi?
>
>
>
> *From:* Michael Salter <michaelsalter@gmail.com>
> *Sent:* Thursday, April 25, 2024 6:19 PM
> *To:* Simon Lachlan <simon.lachlan@alexarevel.plus.com>
> *Cc:* Healeys <healeys@autox.team.net>
> *Subject:* Re: Overdrive pressure or clutch slip Step 2!
>
>
>
> Question ... when you got home and did the pressure test I presume that
> was AFTER you had put the valve with the "top hat", ball, spring and valv=
e
> rod cap and washer back into position?
>
>
>
> M
>
>
>
>
>
>
>
> On Thu., Apr. 25, 2024, 12:29 p.m. Simon Lachlan, <
> simon.lachlan@alexarevel.plus.com> wrote:
>
> So, here is Michael=E2=80=99s =E2=80=9CStep 1=E2=80=9D completed. (See hi=
s email, below).
>
> 1. Removed the operating valve and, just for luck, disconnected the
> two wires into 3rd/4th switch. Took the car for a spin. Up/down
> longish/steepish hills, 10 miles on motorway. Various rpm=E2=80=A6..no=
slippage at
> all.
> 2. Had a puncture=E2=80=A6..nail in tyre. Rear RHS. Flat as a pancake =
at once.
> Nearly onto rim. Nail! I imagine the inner tube is shredded and the ty=
re
> may be a write-off. (Usually are!). Anyhow, I bore you with this as I=
=E2=80=99m
> convinced that I=E2=80=99d never have got the wheel off without the li=
ttle scissors
> jack which I carry to get the car up the first few inches until the He=
aley
> jack comes into play. Just a suggestion=E2=80=A6=E2=80=A6.
> 3. Got home and jacked car up to test pressure. Steady at 520psi
> which, I recall, is plenty. Stayed at 520 across rev range. Dropped ve=
ry
> slowly once engine was off and dropped to zero as I engaged/disengaged=
OD a
> few times. Which is normal I think?
> 4. Solenoid makes a robust =E2=80=9Cclick=E2=80=9D when it should and =
engages the OD
> when activated.
>
> So what=E2=80=99s a sensible =E2=80=9CStep 2=E2=80=9D??
>
> I have been urged to check the setting of the Throttle Switch (TS).
> Assuming that the slippage returns (and why wouldn=E2=80=99t it?), I=E2=
=80=99ll short the
> TS out to see if that fixes it. If it does, I=E2=80=99ll check the adjust=
ment.
>
> Suggestions would be more than welcome=E2=80=A6=E2=80=A6I do dread having=
to take that box
> out again. I=E2=80=99ve got a very adequate ramp and a very strong volunt=
eer(?)
> but, regardless of all that, it=E2=80=99s still quite a task. And, like a=
few of
> us, I=E2=80=99m not as young as I once was. I=E2=80=99ve always enjoyed t=
he lines from the
> manual which I reproduce, below. =E2=80=9CGently ease=E2=80=9D!?!
>
>
>
> Thanks, Simon
>
>
>
> *From:* Michael Salter <michaelsalter@gmail.com>
> *Sent:* Monday, April 22, 2024 3:21 PM
> *To:* Simon Lachlan <simon.lachlan@alexarevel.plus.com>
> *Cc:* Healeys <healeys@autox.team.net>
> *Subject:* Re: [Healeys] Overdrive pressure or clutch slip
>
>
>
> *Correct diagnosis is 1/2 the repair!!*
>
>
>
> First you need to confirm whether the clutch (on the flywheel) or the
> overdrive is causing the slippage.
>
> To do this you ABSOLUTELY MUST disable the overdrive as a badly
> misadjuster overdrive operating valve can produce similar symptoms.
>
> To do this I would remove the overdrive operating valve completely. (Ther=
e
> are other ways but this is absolutely definitive).
>
> Now drive the car up a long hill where you are amle to use full throttle
> at around 3000 RPM (maximum torque) for a few seconds. If it is the clutc=
h
> (on the flywheel) that is causing the slippage these operating conditions=
.
> Test this a few times to be sure.
>
> If there is no slippage we have confirmed that the overdrive clutch is at
> fault.
>
>
>
> Step 1 completed. Please report results. MS.
>
>
>
>
>
>
>
> On Mon., Apr. 22, 2024, 8:08 a.m. Simon Lachlan via Healeys, <
> healeys@autox.team.net> wrote:
>
> You may recall the very extended overdrive and clutch saga last year. Lon=
g
> story short(ish)=E2=80=A6
>
> OD was slipping in and out depending on oil temperature.
>
> Correctly diagnosed pressure. Checked with gauge.
>
> Attempted rebuild=E2=80=A6going only so far as accumulator and related se=
als.
>
> Stymied as could not get pump out. Turned out to have been =E2=80=9Cfixed=
=E2=80=9D at some
> stage with some form of =E2=80=9Cchemical metal=E2=80=9D which was coming=
loose/apart.
>
> Took it up to OD Spares who fixed it..new housing etcetc
>
> Why not a new clutch I thought? Sensible while you=E2=80=99re in the area=
looking
> at a 30+ yr old item.
>
> New clutch=E2=80=A6no good. Noisy, wouldn=E2=80=99t engage/disengage/play=
at all.
>
> Gearbox out again.
>
> Refit clutch. Presumed I=E2=80=99d made some beginner=E2=80=99s mistake.
>
> Refit gearbox=E2=80=A6no good. Same
>
> Can=E2=80=99t recall whether I tried again. Lost count and enthusiasm by =
now.
>
> Turned out that the new clutch kit was defective. (Thanks Mirek) (Genuine
> B&B from AHSpares).
>
> New one did work.
>
> Saga over until yesterday.
>
> Same sort of symptoms=E2=80=A6..
>
> All=E2=80=99s well for first 10 or so miles. Then the dreaded slippage(?)=
starts.
> But it=E2=80=99s not quite the same. Reminds me more of a slipping clutch=
. (But NO
> smell)
>
> Symptoms continue if it=E2=80=99s in or out of OD.
>
> Symptoms reduce at speed.
>
> Yes, plenty of oil. Over the full mark. Looks very clean. Pretty sure it=
=E2=80=99s
> 40wt non-detergent topped up with 30wt non-detergent. (Or vice-versa). Am
> confident in state of the filter, magnets etc.
>
> No, I have not pressure tested it yet and yes, I dread restarting the
> whole bloody process all over again. I=E2=80=99m not sure I can face taki=
ng the box
> out again once, let alone multiple times.
>
> What I want and experience tells me I=E2=80=99m unlikely to get is a mira=
cle cure!
>
> One initial question=E2=80=A6..do OD relays either work or not work? ie, =
can the
> relay hover between on and off which might lead to the OD coming in and
> out? I think that could happen if the switch is off but the unit still
> hasn=E2=80=99t got the message to disengage from the bulkhead switch.
>
> And a supplementary=E2=80=A6.how do I bench test the relay?
>
> Simon
>
>
--000000000000e7fe200616f3f05d
Content-Transfer-Encoding: quoted-printable
<div dir=3D"auto">Okay, then it is confirmed that neither the clutch (on th=
e flywheel) nor the overdrive cone clutch (in it's normal drive conditi=
on) are producing the slippage.=C2=A0<div dir=3D"auto">From this we can con=
clude that even when the overdrive solenoid is <b><u>not</u></b> energized=
=C2=A0the slippage is occurring at the overdrive cone clutch and that for s=
ome reason hydraulic pressure is finding its way into the overdrive operati=
ng cylinders even when the overdrive operating valve is closed.</div><div d=
ir=3D"auto">This can be caused by leakage past operating the valve or resid=
ual pressure.</div><div dir=3D"auto">The question of residual pressure can =
be resolved by checking that the bleed hole in the bottom of the long overd=
rive valve push rod is not blocked.</div><div dir=3D"auto">Whether or not h=
ydraulic pressure is leaking past the operating valve ball can be checked b=
y ensuring that the ball is clearly on its seat when the operating valve is=
<u style=3D"font-weight:bold">not=C2=A0</u>=C2=A0energized.</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">M</div></div><br><div class=3D"gmail_=
quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu., Apr. 25, 2024, 3:38 p=
.m. Simon Lachlan, <<a href=3D"mailto:simon.lachlan@alexarevel.plus.com"=
target=3D"_blank" rel=3D"noreferrer">simon.lachlan@alexarevel.plus.com</a>=
> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 =
0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang=3D"EN-GB" lin=
k=3D"blue" vlink=3D"purple" style=3D"word-wrap:break-word"><div><p class=3D=
"MsoNormal"><span style=3D"font-family:"Times New Roman",serif">O=
f course. Isn=E2=80=99t that how I got the 520psi?<u></u><u></u></span></p>=
<p class=3D"MsoNormal"><span style=3D"font-family:"Times New Roman&quo=
t;,serif"><u></u>=C2=A0<u></u></span></p><div style=3D"border:none;border-t=
op:solid #e1e1e1 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class=3D"MsoNormal"><b=
><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-family:"Calibri&q=
uot;,sans-serif">From:</span></b><span lang=3D"EN-US" style=3D"font-size:11=
.0pt;font-family:"Calibri",sans-serif"> Michael Salter <<a hre=
f=3D"mailto:michaelsalter@gmail.com"; rel=3D"noreferrer noreferrer" target=
=3D"_blank">michaelsalter@gmail.com</a>> <br><b>Sent:</b> Thursday, Apri=
l 25, 2024 6:19 PM<br><b>To:</b> Simon Lachlan <<a href=3D"mailto:simon.=
lachlan@alexarevel.plus.com" rel=3D"noreferrer noreferrer" target=3D"_blank=
">simon.lachlan@alexarevel.plus.com</a>><br><b>Cc:</b> Healeys <<a hr=
ef=3D"mailto:healeys@autox.team.net"; rel=3D"noreferrer noreferrer" target=
=3D"_blank">healeys@autox.team.net</a>><br><b>Subject:</b> Re: Overdrive=
pressure or clutch slip Step 2!<u></u><u></u></span></p></div><p class=3D"=
MsoNormal"><u></u>=C2=A0<u></u></p><div><p class=3D"MsoNormal">Question=C2=
=A0 ... when you got home and did the pressure test I presume that was AFTE=
R you had put the valve with the "top hat", ball, spring and valv=
e rod cap and washer back into position?<u></u><u></u></p><div><p class=3D"=
MsoNormal"><u></u>=C2=A0<u></u></p></div><div><p class=3D"MsoNormal">M<u></=
u><u></u></p><div><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p></div><div=
><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p></div></div></div><p class=
=3D"MsoNormal"><u></u>=C2=A0<u></u></p><div><div><p class=3D"MsoNormal">On =
Thu., Apr. 25, 2024, 12:29 p.m. Simon Lachlan, <<a href=3D"mailto:simon.=
lachlan@alexarevel.plus.com" rel=3D"noreferrer noreferrer" target=3D"_blank=
">simon.lachlan@alexarevel.plus.com</a>> wrote:<u></u><u></u></p></div><=
blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0cm=
0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"><div><div><p class=3D"Ms=
oNormal"><span style=3D"font-family:"Times New Roman",serif">So, =
here is Michael=E2=80=99s =E2=80=9CStep 1=E2=80=9D completed. (See his emai=
l, below).</span><u></u><u></u></p><ol start=3D"1" type=3D"1"><li><span sty=
le=3D"font-family:"Times New Roman",serif">Removed the operating =
valve and, just for luck, disconnected the two wires into 3<sup>rd</sup>/4<=
sup>th</sup> switch. Took the car for a spin. Up/down longish/steepish hill=
s, 10 miles on motorway. Various rpm=E2=80=A6..no slippage at all.</span><u=
></u><u></u></li><li><span style=3D"font-family:"Times New Roman"=
,serif">Had a puncture=E2=80=A6..nail in tyre. Rear RHS. Flat as a pancake =
at once. Nearly onto rim. Nail! I imagine the inner tube is shredded and th=
e tyre may be a write-off. (Usually are!). Anyhow, I bore you with this as =
I=E2=80=99m convinced that I=E2=80=99d never have got the wheel off without=
the little scissors jack which I carry to get the car up the first few inc=
hes until the Healey jack comes into play. Just a suggestion=E2=80=A6=E2=80=
=A6.</span><u></u><u></u></li><li><span style=3D"font-family:"Times Ne=
w Roman",serif">Got home and jacked car up to test pressure. Steady at=
520psi which, I recall, is plenty. Stayed at 520 across rev range. Dropped=
very slowly once engine was off and dropped to zero as I engaged/disengage=
d OD a few times. Which is normal I think?</span><u></u><u></u></li><li><sp=
an style=3D"font-family:"Times New Roman",serif">Solenoid makes a=
robust =E2=80=9Cclick=E2=80=9D when it should and engages the OD when acti=
vated.</span><u></u><u></u></li></ol><p class=3D"MsoNormal"><span style=3D"=
font-family:"Times New Roman",serif">So what=E2=80=99s a sensible=
=E2=80=9CStep 2=E2=80=9D??</span><u></u><u></u></p><p class=3D"MsoNormal">=
<span style=3D"font-family:"Times New Roman",serif">I have been u=
rged to check the setting of the Throttle Switch (TS). Assuming that the sl=
ippage returns (and why wouldn=E2=80=99t it?), I=E2=80=99ll short the TS ou=
t to see if that fixes it. If it does, I=E2=80=99ll check the adjustment.</=
span><u></u><u></u></p><p class=3D"MsoNormal"><span style=3D"font-family:&q=
uot;Times New Roman",serif">Suggestions would be more than welcome=E2=
=80=A6=E2=80=A6I do dread having to take that box out again. I=E2=80=99ve g=
ot a very adequate ramp and a very strong volunteer(?) but, regardless of a=
ll that, it=E2=80=99s still quite a task. And, like a few of us, I=E2=80=99=
m not as young as I once was. I=E2=80=99ve always enjoyed the lines from th=
e manual which I reproduce, below. =E2=80=9CGently ease=E2=80=9D!?! </span>=
<u></u><u></u></p><p class=3D"MsoNormal"><span style=3D"font-family:"T=
imes New Roman",serif"><img border=3D"0" width=3D"495" height=3D"73" s=
tyle=3D"width:5.1583in;height:.7583in" id=3D"m_8975975245683812366m_1423999=
843312464712_x0000_i1025"></span><u></u><u></u></p><p class=3D"MsoNormal"><=
span style=3D"font-family:"Times New Roman",serif">=C2=A0</span><=
u></u><u></u></p><p class=3D"MsoNormal"><span style=3D"font-family:"Ti=
mes New Roman",serif">Thanks, Simon</span><u></u><u></u></p><p class=
=3D"MsoNormal"><span style=3D"font-family:"Times New Roman",serif=
">=C2=A0</span><u></u><u></u></p><div style=3D"border:none;border-top:solid=
#e1e1e1 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class=3D"MsoNormal"><b><span l=
ang=3D"EN-US" style=3D"font-size:11.0pt;font-family:"Calibri",san=
s-serif">From:</span></b><span lang=3D"EN-US" style=3D"font-size:11.0pt;fon=
t-family:"Calibri",sans-serif"> Michael Salter <<a href=3D"mai=
lto:michaelsalter@gmail.com" rel=3D"noreferrer noreferrer" target=3D"_blank=
">michaelsalter@gmail.com</a>> <br><b>Sent:</b> Monday, April 22, 2024 3=
:21 PM<br><b>To:</b> Simon Lachlan <<a href=3D"mailto:simon.lachlan@alex=
arevel.plus.com" rel=3D"noreferrer noreferrer" target=3D"_blank">simon.lach=
lan@alexarevel.plus.com</a>><br><b>Cc:</b> Healeys <<a href=3D"mailto=
:healeys@autox.team.net" rel=3D"noreferrer noreferrer" target=3D"_blank">he=
aleys@autox.team.net</a>><br><b>Subject:</b> Re: [Healeys] Overdrive pre=
ssure or clutch slip</span><u></u><u></u></p></div><p class=3D"MsoNormal">=
=C2=A0<u></u><u></u></p><div><div><p class=3D"MsoNormal"><b><u>Correct diag=
nosis is 1/2 the repair!!</u></b><u></u><u></u></p></div><div><p class=3D"M=
soNormal">=C2=A0<u></u><u></u></p></div><p class=3D"MsoNormal">First you ne=
ed to confirm whether the clutch (on the flywheel) or the overdrive is caus=
ing the slippage.=C2=A0<u></u><u></u></p><div><p class=3D"MsoNormal">To do =
this you ABSOLUTELY MUST disable the overdrive as a badly misadjuster overd=
rive operating valve can produce similar symptoms.=C2=A0<u></u><u></u></p><=
/div><div><p class=3D"MsoNormal">To do this I would remove the overdrive op=
erating valve completely. (There are other ways but this is absolutely defi=
nitive).<u></u><u></u></p></div><div><p class=3D"MsoNormal">Now drive the c=
ar up a long hill where you are amle to use full throttle at around 3000 RP=
M (maximum torque) for a few seconds. If it is the clutch (on the flywheel)=
that is causing the slippage these operating conditions. Test this a few t=
imes to be sure.<u></u><u></u></p></div><div><p class=3D"MsoNormal">If ther=
e is no slippage we have confirmed that the overdrive clutch is at fault.<u=
></u><u></u></p></div><div><p class=3D"MsoNormal">=C2=A0<u></u><u></u></p><=
/div><div><p class=3D"MsoNormal">Step 1 completed. Please report results.=
=C2=A0MS.<u></u><u></u></p></div><div><p class=3D"MsoNormal">=C2=A0<u></u><=
u></u></p></div><div><p class=3D"MsoNormal">=C2=A0<u></u><u></u></p></div><=
/div><p class=3D"MsoNormal">=C2=A0<u></u><u></u></p><div><blockquote style=
=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;m=
argin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt"><di=
v><div><p class=3D"MsoNormal">On Mon., Apr. 22, 2024, 8:08 a.m. Simon Lachl=
an via Healeys, <<a href=3D"mailto:healeys@autox.team.net"; rel=3D"norefe=
rrer noreferrer" target=3D"_blank">healeys@autox.team.net</a>> wrote:<u>=
</u><u></u></p></div><blockquote style=3D"border:none;border-left:solid #cc=
cccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;mar=
gin-right:0cm;margin-bottom:5.0pt"><div><p><span style=3D"font-family:"=
;Times New Roman",serif">You may recall the very extended overdrive an=
d clutch saga last year.</span> <span style=3D"font-family:"Times New =
Roman",serif">Long story short(ish)=E2=80=A6</span><u></u><u></u></p><=
p><span style=3D"font-family:"Times New Roman",serif">OD was slip=
ping in and out depending on oil temperature.</span><u></u><u></u></p><p><s=
pan style=3D"font-family:"Times New Roman",serif">Correctly diagn=
osed pressure. Checked with gauge.</span><u></u><u></u></p><p><span style=
=3D"font-family:"Times New Roman",serif">Attempted rebuild=E2=80=
=A6going only so far as</span> <span style=3D"font-family:"Times New R=
oman",serif">accumulator and related seals.</span><u></u><u></u></p><p=
><span style=3D"font-family:"Times New Roman",serif">Stymied as c=
ould not get pump out. Turned out to have been =E2=80=9Cfixed=E2=80=9D at s=
ome stage with some form of =E2=80=9Cchemical metal=E2=80=9D which was comi=
ng loose/apart.</span><u></u><u></u></p><p><span style=3D"font-family:"=
;Times New Roman",serif">Took it up to OD Spares who fixed it..new hou=
sing etcetc</span><u></u><u></u></p><p><span style=3D"font-family:"Tim=
es New Roman",serif">Why not a new clutch I thought? Sensible while yo=
u=E2=80=99re in the area looking at a 30+ yr old item.</span><u></u><u></u>=
</p><p><span style=3D"font-family:"Times New Roman",serif">New cl=
utch=E2=80=A6no good. Noisy, wouldn=E2=80=99t</span> <span style=3D"font-fa=
mily:"Times New Roman",serif">engage/disengage/play at all.</span=
><u></u><u></u></p><p><span style=3D"font-family:"Times New Roman"=
;,serif">Gearbox out again.</span><u></u><u></u></p><p><span style=3D"font-=
family:"Times New Roman",serif">Refit clutch. Presumed I=E2=80=99=
d made some beginner=E2=80=99s mistake.</span><u></u><u></u></p><p><span st=
yle=3D"font-family:"Times New Roman",serif">Refit gearbox=E2=80=
=A6no good. Same</span><u></u><u></u></p><p><span style=3D"font-family:&quo=
t;Times New Roman",serif">Can=E2=80=99t recall whether I tried again. =
Lost count and enthusiasm by now.</span><u></u><u></u></p><p><span style=3D=
"font-family:"Times New Roman",serif">Turned out that the new clu=
tch kit was defective. (Thanks Mirek) (Genuine B&B from AHSpares).</spa=
n><u></u><u></u></p><p><span style=3D"font-family:"Times New Roman&quo=
t;,serif">New one did work.</span><u></u><u></u></p><p><span style=3D"font-=
family:"Times New Roman",serif">Saga over until yesterday.</span>=
<u></u><u></u></p><p><span style=3D"font-family:"Times New Roman"=
,serif">Same sort of symptoms=E2=80=A6..</span><u></u><u></u></p><p><span s=
tyle=3D"font-family:"Times New Roman",serif">All=E2=80=99s well f=
or first 10 or so miles. Then the dreaded slippage(?) starts. But it=E2=80=
=99s not quite the same. Reminds me more of a slipping clutch. (But NO smel=
l)</span><u></u><u></u></p><p><span style=3D"font-family:"Times New Ro=
man",serif">Symptoms continue if it=E2=80=99s in or out of OD.</span><=
u></u><u></u></p><p><span style=3D"font-family:"Times New Roman",=
serif">Symptoms reduce at speed.</span><u></u><u></u></p><p><span style=3D"=
font-family:"Times New Roman",serif">Yes, plenty of oil. Over the=
full mark. Looks very clean. Pretty sure it=E2=80=99s 40wt</span> <span st=
yle=3D"font-family:"Times New Roman",serif">non-detergent topped =
up with 30wt non-detergent. (Or vice-versa).</span> <span style=3D"font-fam=
ily:"Times New Roman",serif">Am confident in state of the filter,=
magnets etc.</span><u></u><u></u></p><p><span style=3D"font-family:"T=
imes New Roman",serif">No, I have not pressure tested it yet and yes, =
I dread restarting the whole bloody process all over again. I=E2=80=99m not=
sure I can face taking the box out again once, let alone multiple times.</=
span><u></u><u></u></p><p><span style=3D"font-family:"Times New Roman&=
quot;,serif">What I want and experience tells me I=E2=80=99m unlikely to ge=
t is a miracle cure!</span><u></u><u></u></p><p><span style=3D"font-family:=
"Times New Roman",serif">One initial question=E2=80=A6..do OD rel=
ays either work or not work? ie, can the relay hover between on and off</sp=
an> <span style=3D"font-family:"Times New Roman",serif">which mig=
ht lead to the OD coming in and out? I think that could happen if the switc=
h is off but the unit still hasn=E2=80=99t got the message to disengage fro=
m the bulkhead switch.</span><u></u><u></u></p><p><span style=3D"font-famil=
y:"Times New Roman",serif">And a supplementary=E2=80=A6.how</span=
> <span style=3D"font-family:"Times New Roman",serif">do I bench =
test</span> <span style=3D"font-family:"Times New Roman",serif">t=
he relay?</span><u></u><u></u></p><p><span style=3D"font-family:"Times=
New Roman",serif">Simon</span><u></u><u></u></p></div></blockquote></=
div></blockquote></div></div></div></blockquote></div></div></div></blockqu=
ote></div>
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