<div dir="ltr"><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">Hi again Neil,<br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">With all due respects to Steve I would not suspect the accumulator because it is in the hydraulic circuit ahead of the operating valve. <br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">If the accumulator was leaking badly enough to prevent the overdrive from engaging you would never see 390 p.s.i. if you are testing at the operating valve plug with the ball and spring in position.<br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">Although the specified pressure for our units is 470 - 490 p.s.i. I have never seen one achieve 490 p.s.i. and have found units that operated quite satisfactorily with pressures as low as 300 p.s.i. hot. <br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">Someone suggested running the car on stands and manually lifting the valve setting lever. That is how I test for correct operation BUT PLEASE be ware of that driveshaft spinning next to your right hip. Getting yourself tangled up in that will ruin your day.<br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">Michael S<br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">BN1 #174<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jan 4, 2017 at 6:05 AM, Neil McDonald <span dir="ltr"><<a href="mailto:nmcd10@gmail.com" target="_blank">nmcd10@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div><span></span></div><div><div>Yesterday I wrote "<span style="background-color:rgba(255,255,255,0)">I have concluded that the most likely cause of my problems are low OD fluid levels and/or inadequate opening of the actuating valve. Both I can readily deal with."</span></div><div id="m_-4581731882496002555AppleMailSignature"><span style="background-color:rgba(255,255,255,0)"><br></span></div><div id="m_-4581731882496002555AppleMailSignature"><span style="background-color:rgba(255,255,255,0)">In off line discussions with Steve Byers I have added a third and ominous possibility, a defective accumulator. The good hydraulic pressure already confirmed only indicates that the pump is OK because testing was not done while trying to engage the OD. My understanding is that OD engagement is the accumulator's function and the pump's role is to pressurise the accumulator for this task <u>before</u> OD engagement. </span><span style="background-color:rgba(255,255,255,0)">A definitive test of accumulator condition seems to be how well it holds pressure after the engine is switched off! </span></div><div id="m_-4581731882496002555AppleMailSignature">_____________________<div><span class="m_-4581731882496002555Apple-style-span">Neil McDonald</span></div><div><div><div><br></div><div>Email: <a href="mailto:nmcd10@gmail.com" target="_blank">nmcd10@gmail.com</a></div><div><br></div></div></div></div></div></div><br>______________________________<wbr>_________________<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><i><font size="2"><span style="color:black">If you can't fix it with a hammer, you've got an electrical problem.</span></font></i><br><br><div></div><div></div><div></div></div></div></div></div>
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