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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-family:"Times New Roman",serif;mso-fareast-language:EN-US'>Of course. Isn’t that how I got the 520psi?<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Times New Roman",serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Michael Salter <michaelsalter@gmail.com> <br><b>Sent:</b> Thursday, April 25, 2024 6:19 PM<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=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>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?<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>M<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Thu., Apr. 25, 2024, 12:29 p.m. Simon Lachlan, <<a href="mailto:simon.lachlan@alexarevel.plus.com">simon.lachlan@alexarevel.plus.com</a>> wrote:<o:p></o:p></p></div><blockquote style='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=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Times New Roman",serif'>So, here is Michael’s “Step 1” completed. (See his email, below).</span><o:p></o:p></p><ol start=1 type=1><li class=m6709788667580652039msolistparagraph style='mso-list:l0 level1 lfo1'><span style='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…..no slippage at all.</span><o:p></o:p></li><li class=m6709788667580652039msolistparagraph style='mso-list:l0 level1 lfo1'><span style='font-family:"Times New Roman",serif'>Had a puncture…..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’m convinced that I’d 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…….</span><o:p></o:p></li><li class=m6709788667580652039msolistparagraph style='mso-list:l0 level1 lfo1'><span style='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=m6709788667580652039msolistparagraph style='mso-list:l0 level1 lfo1'><span style='font-family:"Times New Roman",serif'>Solenoid makes a robust “click” when it should and engages the OD when activated.</span><o:p></o:p></li></ol><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Times New Roman",serif'>So what’s a sensible “Step 2”??</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='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’t it?), I’ll short the TS out to see if that fixes it. If it does, I’ll check the adjustment.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Times New Roman",serif'>Suggestions would be more than welcome……I do dread having to take that box out again. I’ve got a very adequate ramp and a very strong volunteer(?) but, regardless of all that, it’s still quite a task. And, like a few of us, I’m not as young as I once was. I’ve always enjoyed the lines from the manual which I reproduce, below. “Gently ease”!?! </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Times New Roman",serif'><img border=0 width=495 height=73 style='width:5.1583in;height:.7583in' id="_x0000_i1025" src="cid:image003.png@01DA9736.211AE5D0"></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Times New Roman",serif'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Times New Roman",serif'>Thanks, Simon</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Times New Roman",serif'> </span><o:p></o:p></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Michael Salter <<a href="mailto:michaelsalter@gmail.com" target="_blank">michaelsalter@gmail.com</a>> <br><b>Sent:</b> Monday, April 22, 2024 3:21 PM<br><b>To:</b> Simon Lachlan <<a href="mailto:simon.lachlan@alexarevel.plus.com" target="_blank">simon.lachlan@alexarevel.plus.com</a>><br><b>Cc:</b> Healeys <<a href="mailto:healeys@autox.team.net" target="_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=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><u>Correct diagnosis is 1/2 the repair!!</u></b><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><p class=MsoNormal style='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=MsoNormal style='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=MsoNormal style='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=MsoNormal style='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=MsoNormal style='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=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='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=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><blockquote style='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:50pt'><div><div><p class=MsoNormal style='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="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.net</a>> wrote:<o:p></o:p></p></div><blockquote style='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:50pt'><div><p><span style='font-family:"Times New Roman",serif'>You may recall the very extended overdrive and clutch saga last year.</span> <span style='font-family:"Times New Roman",serif'>Long story short(ish)…</span><o:p></o:p></p><p><span style='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='font-family:"Times New Roman",serif'>Correctly diagnosed pressure. Checked with gauge.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Attempted rebuild…going only so far as</span> <span style='font-family:"Times New Roman",serif'>accumulator and related seals.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Stymied as could not get pump out. Turned out to have been “fixed” at some stage with some form of “chemical metal” which was coming loose/apart.</span><o:p></o:p></p><p><span style='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='font-family:"Times New Roman",serif'>Why not a new clutch I thought? Sensible while you’re in the area looking at a 30+ yr old item.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>New clutch…no good. Noisy, wouldn’t</span> <span style='font-family:"Times New Roman",serif'>engage/disengage/play at all.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Gearbox out again.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Refit clutch. Presumed I’d made some beginner’s mistake.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Refit gearbox…no good. Same</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Can’t recall whether I tried again. Lost count and enthusiasm by now.</span><o:p></o:p></p><p><span style='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='font-family:"Times New Roman",serif'>New one did work.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Saga over until yesterday.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Same sort of symptoms…..</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>All’s well for first 10 or so miles. Then the dreaded slippage(?) starts. But it’s not quite the same. Reminds me more of a slipping clutch. (But NO smell)</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Symptoms continue if it’s in or out of OD.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Symptoms reduce at speed.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Yes, plenty of oil. Over the full mark. Looks very clean. Pretty sure it’s 40wt</span> <span style='font-family:"Times New Roman",serif'>non-detergent topped up with 30wt non-detergent. (Or vice-versa).</span> <span style='font-family:"Times New Roman",serif'>Am confident in state of the filter, magnets etc.</span><o:p></o:p></p><p><span style='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’m not sure I can face taking the box out again once, let alone multiple times.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>What I want and experience tells me I’m unlikely to get is a miracle cure!</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>One initial question…..do OD relays either work or not work? ie, can the relay hover between on and off</span> <span style='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’t got the message to disengage from the bulkhead switch.</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>And a supplementary….how</span> <span style='font-family:"Times New Roman",serif'>do I bench test</span> <span style='font-family:"Times New Roman",serif'>the relay?</span><o:p></o:p></p><p><span style='font-family:"Times New Roman",serif'>Simon</span><o:p></o:p></p></div></blockquote></div></blockquote></div></div></div></blockquote></div></div></body></html>