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<p>Simon,</p>
<p>I know some prefer to turn back the diaphragm a bit further but I
rather stick to the manufacturers instructions. It does not do any
harm though, you just increase the stroke of the diaphragm very
slightly. Anyway it is not always very clear when the points stop
throwing over so it is easy to be wrong by one hole.<br>
</p>
<p>Also in practical terms I have fun. I quite like to rebuild the
SU-pumps. It is always nice to get a dirty clapped out pump with
cracked tops and pedestals, rusted valves, dried out seals,
cauliflowers on the points etc. going like a dream after an hours
work. Sometimes I have to concede defeat when the screws are
rusted solid and snap in the aluminium of the pump body or when
the coil has burned out but those occurrences are very rare.</p>
<p>Kees Oudesluijs</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Op 5-12-2018 om 11:44 schreef
<a class="moz-txt-link-abbreviated" href="mailto:simon.lachlan@alexarevel.plus.com">simon.lachlan@alexarevel.plus.com</a>:<br>
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<blockquote type="cite"
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext;mso-fareast-language:EN-US">Yes
and I think some of the experts have suggested turning back
one extra hole. <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext;mso-fareast-language:EN-US">These
pumps certainly give us hours of theoretical fun(?) if not
always so much in practical terms. Having said that, I –
touch wood – have never had any trouble with them that
didn’t arise from negligence ie back in the days when I
didn’t know what points were, let alone how and when to
adjust them.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext;mso-fareast-language:EN-US">Simon<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"
lang="EN-US">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"
lang="EN-US"> Healeys
<a class="moz-txt-link-rfc2396E" href="mailto:healeys-bounces@autox.team.net"><healeys-bounces@autox.team.net></a> <b>On Behalf Of
</b>Kees Oudesluijs<br>
<b>Sent:</b> 05 December 2018 09:55<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:healeys@autox.team.net">healeys@autox.team.net</a><br>
<b>Subject:</b> Re: [Healeys] Fuel pumps (AGAIN!)<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p>Bob,<span style="font-size:11.0pt"><o:p></o:p></span></p>
<p><o:p> </o:p></p>
<p>The settings are the same for all SU pumps as the coil
housing with points assembly is mechanically the same on all
SU-pumps.<o:p></o:p></p>
<p>top blade to pedestal at the very front of the blade:
0,9mm/0,035<o:p></o:p></p>
<p>coil body to lip on lower points assembly: 2,3mm/0,090", this
used to be 1,9mm in the early days with a slightly different
points design (NLA), but I set them all to 2,3mm using the
later points<o:p></o:p></p>
<p>Also important is the adjustment of the diaphragm: <o:p></o:p></p>
<p>Remove the 10 guiding brass rings, five 8-shaped plastic
parts or a U-shaped plastic casting between the steel centre
of the diaphragm and coil housing.Screw in the diaphragm
slowly while continually moving it in and out firmly, holding
the pump horizontal, until the points just do not throw over
any more, turn the diaphragm back to line up with the nearest
hole and then turn back another 4 holes. Refit the guiding
brass rings/8-shaped plastic parts/ U-shaped plastic casting.
Be careful that these are seated properly. If not they will
get damaged and the diaphragm will be destroyed when fitting
the pump body and coil housing together.<br>
Adjust the points as previously described. <o:p></o:p></p>
<p>Fit a transil between the small terminal screw of the points
blade and one of the 2 larger pedestal screws.<o:p></o:p></p>
<p><o:p> </o:p></p>
<p>Kees Oudesluijs<o:p></o:p></p>
<p><o:p> </o:p></p>
<p><o:p> </o:p></p>
<div>
<p class="MsoNormal">Op 5-12-2018 om 04:55 schreef Bob
Spidell:<o:p></o:p></p>
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<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p>David,<o:p></o:p></p>
<p>Are the factory settings per SU the same as those in the
shop manual (Bentley, in my case)?<o:p></o:p></p>
<p>Bob<o:p></o:p></p>
<br>
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