<div dir="ltr"><div>Agree - I had to re read your note to be sure which clutch you were talking about.</div><div>If you have the GB cover still on you, could disable the OD by disconnecting the solenoid - probably easier than removing the operating valve.</div><div>Regarding testing the OD relay, yes as MS says they usually fail positively and usually the operating coil.</div><div>To bench test:</div><div>With a 12V supply on W1 and W2 you should hear a clear click for ON and OFF</div><div>This would prove that the coil is OK</div><div>Contacts not quite as easy to verify.</div><div>Same test as above but an ohm meter on lowest scale across C1 and C2</div><div>An anologue meter is preferable and you can see if there is any dithering when the contacts close. Operating should be positive and crisp.</div><div>I would also be suspicious of the TS - they can have some weird failure modes and go out of adjustment,</div><div>rg<br></div><div><br></div><div><br></div><div id="m_-7026411280735381914DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br><table style="border-top:1px solid #d3d4de"><tbody><tr><td style="width:55px;padding-top:13px"><a href="http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank"><img src="https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-green-avg-v1.png" alt="" width="46" height="29" style="width:46px;height:29px"></a></td><td style="width:470px;padding-top:12px;color:#41424e;font-size:13px;font-family:Arial,Helvetica,sans-serif;line-height:18px">Virus-free.<a href="http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" style="color:#4453ea" target="_blank">www.avg.com</a></td></tr></tbody></table><a href="#m_-7026411280735381914_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"></a></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 22, 2024 at 7:39 AM Michael Salter <<a href="mailto:michaelsalter@gmail.com" target="_blank">michaelsalter@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div dir="auto"><b><u>Correct diagnosis is 1/2 the repair!!</u></b></div><div dir="auto"><br></div>First you need to confirm whether the clutch (on the flywheel) or the overdrive is causing the slippage. <div dir="auto">To do this you ABSOLUTELY MUST disable the overdrive as a badly misadjuster overdrive operating valve can produce similar symptoms. </div><div dir="auto">To do this I would remove the overdrive operating valve completely. (There are other ways but this is absolutely definitive).</div><div dir="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.</div><div dir="auto">If there is no slippage we have confirmed that the overdrive clutch is at fault.</div><div dir="auto"><br></div><div dir="auto">Step 1 completed. Please report results. </div><div dir="auto"><br></div><div dir="auto"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon., Apr. 22, 2024, 9:03 a.m. Michael Salter, <<a href="mailto:michaelsalter@gmail.com" target="_blank">michaelsalter@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">In my experience relays are yes/no. No "maybe".</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon., Apr. 22, 2024, 8:08 a.m. Simon Lachlan via Healeys, <<a href="mailto:healeys@autox.team.net" rel="noreferrer" target="_blank">healeys@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
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<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">You may recall the very extended overdrive and clutch saga last year.</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"> <font face="Times New Roman">Long story short(ish)…</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">OD was slipping in and out depending on oil temperature.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Correctly diagnosed pressure. Checked with gau</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">ge.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Attempted rebuild…going only so far as</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"> <font face="Times New Roman">accumulator and related seals.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Stymied</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman"> as could not get pump out. Turned out to have been “fixed” at some stage with some form of</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman"> “chemical metal” which was coming loose/apart.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Took it up to O</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">D</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman"> Spares who fi</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">xed it..new housing etcetc</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Why not a new clutch I thought? Sensible while you’re in the area lookin</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">g at a 30+ yr old item.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">New clutch…no good. Noisy</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">, wouldn’t</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"> <font face="Times New Roman">engage/disengage/play at all</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Gearbox out again.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Refit clutch. Presumed I’d made some beginner’s mistake.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Re</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">fit gearbox…no good. Same</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Can’t recall whether I tried again. Lost count and enthusiasm by now.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Turned out that the new clu</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">tch kit was defective. (Thanks Mirek)</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman"> (Genui</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">ne B&B from AHSpares).</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">New one did work.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Saga over</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman"> until yesterday.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Same sort of symptoms…..</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">All’s well for first 10 or so miles. Then the dreaded slippage(?) s</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">tarts. But it’s not quite the same. Reminds me more of a slipping clutch. (But NO smell)</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Symptoms continue if it’s in or out of OD.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Symptoms reduce at speed.</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Yes, plenty of oil. Over the full mark. Looks very clean. Pretty sure it’s 40wt</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"> <font face="Times New Roman">n</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">on-d</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">etergent topped up with 30wt non-detergent. (Or vice</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">-versa).</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"> <font face="Times New Roman">Am confident in state of the filter, magnets etc.</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">No, I have not pressure tested it yet</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman"> and yes, I dread restarting the whole bloody process all over again. I’m not sure I can face taking the box out</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman"> again once, let alone multiple times.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">What I want and experience tells me I’m unlikely to get is a miracle cure</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">!</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">One ini</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">tial question…..do OD relays either work or not work? ie, can the relay hover between on and off</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"> <font face="Times New Roman">which might lead to the OD coming in and out? I think that could happen if the switch is off but the</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman"> unit still hasn’t got the message to disengage from the bulkhead switch.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">And a supplementary….how</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"> <font face="Times New Roman">d</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"><font face="Times New Roman">o I bench test</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"> <font face="Times New Roman">the relay?</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Times New Roman">Simon</font></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span><span lang="en-gb"></span></p>
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