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<p style="margin-top:0;margin-bottom:0">I doubt the electronic system produces any ozone since that is a product of the spark produced by the contact points. The electronic system induces a much weaker spark. </p>
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<p style="margin-top:0;margin-bottom:0">Maybe what you need is a solid cover and some tape for the joint.</p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Healeys <healeys-bounces@autox.team.net> on behalf of Bob Spidell <bspidell@comcast.net><br>
<b>Sent:</b> Sunday, May 13, 2018 3:00:23 PM<br>
<b>To:</b> healeys@autox.team.net<br>
<b>Subject:</b> Re: [Healeys] Anybody body out there rebuild Lucas Fuel pumps?</font>
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<div class="PlainText">True enough about the electronic pumps. This is what happens when water
<br>
gets into the electronics (attached photo). This pump had about 50K <br>
miles on it, but had recently gone through some serious rain in <br>
Washington state.<br>
<br>
What I learned from this, er, 'experience' is that the check ball/valve <br>
that vents ozone out of the control (electronic) section needs the <br>
plastic cap over over the vent. I haven't bought a pump in a while, but <br>
IIRC some of them come with a metal 'pipe'--for lack of a better <br>
word--without the plastic cap that helps prevent water from entering. <br>
Installing the cap--if you can find one--involves pulling the metal pipe <br>
off--be careful you don't lose the small ball bearing check ball--and <br>
installing the plastic cap over it.<br>
<br>
Bob<br>
<br>
<br>
On 5/13/2018 2:56 AM, Kees Oudesluijs wrote:<br>
> I rebuild/overhaul SU (mostly AUF300/AZX1300 series) fuel pumps using <br>
> the standard points and adding a transil across the points to limit <br>
> the voltage across the points thus preventing arcing. It also makes <br>
> the pump dual polarity. Keeping the points means that it is possible <br>
> to attend to the fuel pump at the roadside if need be. Electronically <br>
> converted pumps, be it with an optical or magnetic system, are <br>
> supposed to be reliable but if they go wrong, and they sometimes do, <br>
> thatīs it.<br>
><br>
> It is easy to rebuild these pumps. Very often it is only necessary to <br>
> clean and polish the points and properly set the point gaps, spring <br>
> blade front to bridge 0,9mm and tumbler to cast iron body 2,3mm, some <br>
> say 1,8mm but that is a very early setting. Replacement is easy but <br>
> dismantling the pump is needed.<br>
><br>
> If the pump has not been in use for a long time the internals may have <br>
> corroded. The valves may than need replacement. Dismantle the pump, <br>
> clean and rebuild. The old triple layer diaphragm is nearly always in <br>
> good serviceable condition and preferable to a new single layer one. <br>
> It may feel a bit stif, but this is usually caused by the layers being <br>
> stuck together. Just pry the layers apart very carefully, especially <br>
> the very thin kevlar membrane and apply just a smear of talcum powder <br>
> between the layers.<br>
><br>
> There are plenty of sites you can Google for the rebuilding process.<br>
><br>
><br>
><br>
> Kees Oudesluijs<br>
><br>
><br>
<br>
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