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the bypass valve spring can be replaced/shimmed to adjust pressure as
needed.
ptegler
On 6/10/2016 9:04 PM, hdrider570@att.net wrote:
> When I had this problem with a J type OD, it was wear in the pump
> piston/bore. This pump uses no seals so I expect that your mechanics
> are talking about the accumulator piston(s). Basically when the
> piston/bore wears the clearances increase which allows oil to bypass
> the piston resulting in lower pressure. One thing that I noticed was
> that the slippage was more pronounced once the OD warmed up thus
> reducing the viscosity of the oil.
>
> I expect that a worn drive pin in the piston could cause a similar
> problem by shortening the piston sweep.
>
> Bottom line is if you are not getting enough oil pressure, it is a
> hydraulic problem which is either not enough supply (pump wear?) or
> excessive losses somewhere such as bad piston seals etc.
>
> Edward Hamer
> Petaluma CA
>
>
> ** triumphs@autox.team.net **
>
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Paul Tegler ptegler@verizon.net www.teglerizer.com
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<p>the bypass valve spring can be replaced/shimmed to adjust
pressure as needed.</p>
<p>ptegler<br>
</p>
<br>
<div class="moz-cite-prefix">On 6/10/2016 9:04 PM,
<a class="moz-txt-link-abbreviated"
href="mailto:hdrider570@att.net";>hdrider570@att.net</a> wrote:<br>
</div>
<blockquote cite="mid:575B63A8.90903@att.net" type="cite">
<meta http-equiv="content-type" content="text/html;
charset=windows-1252">
<font face="Arial Black">When I had this problem with a J type OD,
it was wear in the pump piston/bore. This pump use<font
face="Arial Black">s no seals so I expect that your mechanics
are talking about the accumulator piston(s). Basically when <font
face="Arial Black">t</font>he piston/bore wears the
clearances increase which allows oil to bypass the piston
resulting in lower pressure. One thing that I noticed was
that the slippage was more pronounced once the OD warmed up
thus reducing the viscosity of the oil.<br>
<br>
<font face="Arial Black">I expect that a worn drive pin in the
piston could cause a similar problem by shortening the
piston sweep.</font><br>
<br>
<font face="Arial Black">Bottom line is if you are not getting
enough oil pressure, it is a hydraulic problem which is
either not enough supply (pump wear?) or <font face="Arial
Black">excessive losses some<font face="Arial Black">where
such as bad piston seals etc.<br>
<br>
<font face="Arial Black">Edward Hamer<br>
<font face="Arial Black">Petaluma CA</font><br>
</font></font></font></font></font></font> <br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">
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href="mailto:triumphs@autox.team.net";>triumphs@autox.team.net</a> **
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</pre>
</blockquote>
<br>
<div class="moz-signature">-- <br>
Paul Tegler
<a class="moz-txt-link-abbreviated"
href="mailto:ptegler@verizon.net";>ptegler@verizon.net</a>
<a class="moz-txt-link-abbreviated"
href="http://www.teglerizer.com";>www.teglerizer.com</a>
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