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Hi, Thanks for this.
Not sure I understand fully.=20
Once I=E2=80=99d finished the test drive with the OD operating valve out =
of the car, I returned the rod, ball, spring etc and put in the gauge =
rather than the nut. And got 500+ psi.=20
What I can=E2=80=99t do is understand the leap to the OD cone clutch. =
Not arguing=E2=80=A6just saying no comprende. As I sat in the car, I was =
thinking that the function of the OD seems OK and that it=E2=80=99s =
being interfered with by something in its =
circuitry=E2=80=A6=E2=80=A6relay, solenoid or throttle switch. =
That=E2=80=99s probably wishful thinking as I really don=E2=80=99t want =
to be swimming in those waters.
=20
I did, as a matter of course, clean out the tiny hole in the rod but =
didn=E2=80=99t detect any blockage=E2=80=A6.which doesn=E2=80=99t mean =
much as something minute could have been inside and been washed away by =
the detergent/hot water then WD40=E2=80=A6..
=20
After someone=E2=80=99s advice =E2=80=93 some time back =E2=80=93 =
I=E2=80=99ve got another rod whose aperture has been drilled out to =
1.5mm. This was =E2=80=9Cto allow the OD to disengage faster=E2=80=9D. =
Don=E2=80=99t recall if I tried it. Could that rod be any help here?
=20
The ball seems to be sitting square on its seat and the tip of the rod, =
where the ball sits, is not worn or chipped.
Residual pressure=E2=80=A6.. goes to 500+ when I switch OD ON and stays =
there until, engine and switch OFF, I energize the solenoid a few times =
whereupon it drops to zero.
=20
Another test drive(s) seems called for. But the hood is off to enable =
access and the forecast is grim for the next week.
=20
Very open to more suggestions. Thanks,
Simon
=20
=20
=20
=20
=20
From: Michael Salter <michaelsalter@gmail.com>=20
Sent: Friday, April 26, 2024 12:14 AM
To: Simon Lachlan <simon.lachlan@alexarevel.plus.com>
Cc: Healeys <healeys@autox.team.net>
Subject: Re: Overdrive pressure or clutch slip Step 2!
=20
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.=20
>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.
=20
M
=20
On Thu., Apr. 25, 2024, 3:38 p.m. Simon Lachlan, =
<simon.lachlan@alexarevel.plus.com =
Of course. Isn=E2=80=99t that how I got the 520psi?
=20
From: Michael Salter <michaelsalter@gmail.com =
Sent: Thursday, April 25, 2024 6:19 PM
To: Simon Lachlan <simon.lachlan@alexarevel.plus.com =
Subject: Re: Overdrive pressure or clutch slip Step 2!
=20
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 =
valve rod cap and washer back into position?
=20
M
=20
=20
=20
On Thu., Apr. 25, 2024, 12:29 p.m. Simon Lachlan, =
<simon.lachlan@alexarevel.plus.com =
So, here is Michael=E2=80=99s =E2=80=9CStep 1=E2=80=9D completed. (See =
his 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 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 inches until the Healey 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 very 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 adjustment.
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 volunteer(?) 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 the lines from the manual which I =
reproduce, below. =E2=80=9CGently ease=E2=80=9D!?!=20
=20
Thanks, Simon
=20
From: Michael Salter <michaelsalter@gmail.com =
Sent: Monday, April 22, 2024 3:21 PM
To: Simon Lachlan <simon.lachlan@alexarevel.plus.com =
Subject: Re: [Healeys] Overdrive pressure or clutch slip
=20
Correct diagnosis is 1/2 the repair!!
=20
First you need to confirm whether the clutch (on the flywheel) or the =
overdrive is causing the slippage.=20
To do this you ABSOLUTELY MUST disable the overdrive as a badly =
misadjuster overdrive operating valve can produce similar symptoms.=20
To do this I would remove the overdrive operating valve completely. =
(There 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 =
clutch (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.
=20
Step 1 completed. Please report results. MS.
=20
=20
=20
On Mon., Apr. 22, 2024, 8:08 a.m. Simon Lachlan via Healeys, =
You may recall the very extended overdrive and clutch saga last year. =
Long 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 =
seals.
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 =
taking 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 =
miracle 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
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vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Hi, Thanks for =
this.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Not sure I understand fully. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Once I=E2=80=99d finished the =
test drive with the OD operating valve out of the car, I returned the =
rod, ball, spring etc and put in the gauge rather than the nut. And got =
500+ psi. <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>What I can=E2=80=99t do is =
understand the leap to the OD cone clutch. Not arguing=E2=80=A6just =
saying no comprende. As I sat in the car, I was thinking that the =
function of the OD seems OK and that it=E2=80=99s being interfered with =
by something in its circuitry=E2=80=A6=E2=80=A6relay, solenoid or =
throttle switch. That=E2=80=99s probably wishful thinking as I really =
don=E2=80=99t want to be swimming in those =
waters.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>I did, as a matter of course, =
clean out the tiny hole in the rod but didn=E2=80=99t detect any =
blockage=E2=80=A6.which doesn=E2=80=99t mean much as something minute =
could have been inside and been washed away by the detergent/hot water =
then WD40=E2=80=A6..<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>After someone=E2=80=99s advice =
=E2=80=93 some time back =E2=80=93 I=E2=80=99ve got another rod whose =
aperture has been drilled out to 1.5mm. This was =E2=80=9Cto allow the =
OD to disengage faster=E2=80=9D. Don=E2=80=99t recall if I tried it. =
Could that rod be any help here?<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>The ball seems to be sitting =
square on its seat and the tip of the rod, where the ball sits, is not =
worn or chipped.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Residual pressure=E2=80=A6.. =
goes to 500+ when I switch OD ON and stays there until, engine and =
switch OFF, I energize the solenoid a few times whereupon it drops to =
zero.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Another test drive(s) seems =
called for. But the hood is off to enable access and the forecast is =
grim for the next week.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Very open to more suggestions. =
Thanks,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Simon<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div=
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Michael =
Salter <michaelsalter@gmail.com> <br><b>Sent:</b> Friday, April =
26, 2024 12:14 AM<br><b>To:</b> Simon Lachlan =
<simon.lachlan@alexarevel.plus.com><br><b>Cc:</b> Healeys =
<healeys@autox.team.net><br><b>Subject:</b> Re: Overdrive pressure =
or clutch slip Step 2!<o:p></o:p></span></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>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. <o:p></o:p></p><div><p class=3DMsoNormal>From this we can =
conclude that even when the overdrive solenoid is <b><u>not</u></b> =
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.<o:p></o:p></p></div><div><p class=3DMsoNormal>This can be caused =
by leakage past operating the valve or residual =
pressure.<o:p></o:p></p></div><div><p class=3DMsoNormal>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.<o:p></o:p></p></div><div><p class=3DMsoNormal>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 =
<b><u>not </u></b> energized.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>M<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Thu., Apr. 25, 2024, 3:38 p.m. Simon Lachlan, <<a =
href=3D"mailto:simon.lachlan@alexarevel.plus.com"; =
target=3D"_blank">simon.lachlan@alexarevel.plus.com</a>> =
wrote:<o:p></o:p></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=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Of course. Isn=E2=80=99t =
that how I got the 520psi?</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'> </span><o:p></o:p></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Michael =
Salter <<a href=3D"mailto:michaelsalter@gmail.com"; =
target=3D"_blank">michaelsalter@gmail.com</a>> <br><b>Sent:</b> =
Thursday, April 25, 2024 6:19 PM<br><b>To:</b> Simon Lachlan <<a =
href=3D"mailto:simon.lachlan@alexarevel.plus.com"; =
target=3D"_blank">simon.lachlan@alexarevel.plus.com</a>><br><b>Cc:</b>=
Healeys <<a href=3D"mailto:healeys@autox.team.net"; =
target=3D"_blank">healeys@autox.team.net</a>><br><b>Subject:</b> Re: =
Overdrive pressure or clutch slip Step 2!</span><o:p></o:p></p></div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Question&nbs=
p; ... 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 valve rod cap and washer back into position?<o:p></o:p></p><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>M<o:p></o:p>=
</p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div></div></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Thu., =
Apr. 25, 2024, 12:29 p.m. Simon Lachlan, <<a =
href=3D"mailto:simon.lachlan@alexarevel.plus.com"; =
target=3D"_blank">simon.lachlan@alexarevel.plus.com</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><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 email, =
below).</span><o:p></o:p></p><ol start=3D1 type=3D1><li =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 =
level1 lfo1'><span style=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 hills, 10 miles on motorway. Various rpm=E2=80=A6..no =
slippage at all.</span><o:p></o:p></li><li class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 =
level1 lfo1'><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 the 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 inches until the Healey jack comes into play. Just a =
suggestion=E2=80=A6=E2=80=A6.</span><o:p></o:p></li><li =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 =
level1 lfo1'><span style=3D'font-family:"Times New 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/disengaged OD a few =
times. Which is normal I think?</span><o:p></o:p></li><li =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 =
level1 lfo1'><span 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 activated.</span><o:p></o:p></li></ol><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>So what=E2=80=99s a =
sensible =E2=80=9CStep 2=E2=80=9D??</span><o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>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 =
adjustment.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"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 got a very adequate ramp and a very strong =
volunteer(?) 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 the lines from the manual which I reproduce, =
below. =E2=80=9CGently ease=E2=80=9D!?! </span><o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p></o:p><=
/p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'> </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Thanks, =
Simon</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'> </span><o:p></o:p></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Michael =
Salter <<a href=3D"mailto:michaelsalter@gmail.com"; =
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@alexarevel.plus.com"; =
target=3D"_blank">simon.lachlan@alexarevel.plus.com</a>><br><b>Cc:</b>=
Healeys <<a href=3D"mailto:healeys@autox.team.net"; =
target=3D"_blank">healeys@autox.team.net</a>><br><b>Subject:</b> Re: =
[Healeys] Overdrive pressure or clutch =
slip</span><o:p></o:p></p></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><u>Correc=
t diagnosis is 1/2 the repair!!</u></b><o:p></o:p></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>First you =
need to confirm whether the clutch (on the flywheel) or the overdrive is =
causing the slippage. <o:p></o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>To do this =
you ABSOLUTELY MUST disable the overdrive as a badly misadjuster =
overdrive operating valve can produce similar =
symptoms. <o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>To do this =
I would remove the overdrive operating valve completely. (There are =
other ways but this is absolutely =
definitive).<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>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 clutch (on the =
flywheel) that is causing the slippage these operating conditions. Test =
this a few times to be sure.<o:p></o:p></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>If there is =
no slippage we have confirmed that the overdrive clutch is at =
fault.<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Step 1 =
completed. Please report results. MS.<o:p></o:p></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><blockquote style=3D'border:none;border-left:solid #CCCCCC =
1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Mon., =
Apr. 22, 2024, 8:08 a.m. Simon Lachlan via Healeys, <<a =
href=3D"mailto:healeys@autox.team.net"; =
target=3D"_blank">healeys@autox.team.net</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
0pt'><div><p><span style=3D'font-family:"Times New Roman",serif'>You =
may recall the very extended overdrive and clutch saga last year.</span> =
<span style=3D'font-family:"Times New Roman",serif'>Long story =
short(ish)=E2=80=A6</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>OD was slipping in and out =
depending on oil temperature.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>Correctly diagnosed =
pressure. Checked with gauge.</span><o:p></o:p></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 Roman",serif'>accumulator and related =
seals.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>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.</span><o:p></o:p></p><p><span style=3D'font-family:"Times =
New Roman",serif'>Took it up to OD Spares who fixed it..new housing =
etcetc</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Why not a new clutch I thought? Sensible while =
you=E2=80=99re in the area looking at a 30+ yr old =
item.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>New clutch=E2=80=A6no good. Noisy, wouldn=E2=80=99t</span> =
<span style=3D'font-family:"Times New =
Roman",serif'>engage/disengage/play at =
all.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Gearbox out again.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>Refit clutch. Presumed =
I=E2=80=99d made some beginner=E2=80=99s =
mistake.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Refit gearbox=E2=80=A6no good. =
Same</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Can=E2=80=99t recall whether I tried again. Lost count and =
enthusiasm by now.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>Turned out that the new =
clutch kit was defective. (Thanks Mirek) (Genuine B&B from =
AHSpares).</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>New one did work.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>Saga over until =
yesterday.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Same sort of =
symptoms=E2=80=A6..</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>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)</span><o:p></o:p></p><p><span style=3D'font-family:"Times =
New Roman",serif'>Symptoms continue if it=E2=80=99s in or out of =
OD.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Symptoms reduce at speed.</span><o:p></o:p></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 style=3D'font-family:"Times New Roman",serif'>non-detergent topped =
up with 30wt non-detergent. (Or vice-versa).</span> <span =
style=3D'font-family:"Times New Roman",serif'>Am confident in state of =
the filter, magnets etc.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times 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><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>What I want and experience =
tells me I=E2=80=99m unlikely to get is a miracle =
cure!</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>One initial question=E2=80=A6..do OD relays either work or =
not work? ie, can the relay hover between on and off</span> <span =
style=3D'font-family:"Times New Roman",serif'>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.</span><o:p></o:p></p><p><span =
style=3D'font-family:"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'>the relay?</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New =
Roman",serif'>Simon</span><o:p></o:p></p></div></blockquote></div></block=
quote></div></div></div></blockquote></div></div></div></blockquote></div=
></div></body></html>
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