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<div dir="auto">I did a quick Google <span>search. Rebuild kits came up. One must be correct for your pump. Post on the Samba. Someone must have the way forward.</span></div>
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<div dir="auto"><span>Beion S </span></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> type3-vwtype3.org <type3-vwtype3.org-bounces@lists.vwtype3.org> on behalf of Joe Plowick III <gtixpress@gmail.com><br>
<b>Sent:</b> Thursday, December 14, 2023 11:42:47 AM<br>
<b>To:</b> type3@vwtype3.org <type3@vwtype3.org><br>
<b>Subject:</b> Re: [T3] Mechanical Fuel pump kit</font>
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<div class="PlainText">The issue appears to be the diaphragm getting stiff. The pump had worked<br>
beautifully before, but then I hadn't ran the engine for a few months.<br>
When I tried it again, it wasn't pumping fuel. I removed the top cover and<br>
the diaphragm wasn't very flexible. I sprayed everything out with carb<br>
cleaner and flexed the diaphragm which freed it up. After that, it started<br>
working again. The rest of the pump inside looked brand new. I just<br>
haven't come across a replacement that matches. I have a Pierburg pump as<br>
well that didn't work for me last time I tried, and probably needs a<br>
rebuild as well. I may have to dig that one out and see if it's got a<br>
different design and better parts availability.<br>
<br>
Joe P.<br>
<br>
<br>
On Thu, Dec 14, 2023 at 12:03 PM Jim Adney <jadney@vwtype3.org> wrote:<br>
<br>
> On 14 Dec 2023 at 9:16, Joe Plowick III wrote:<br>
><br>
> > I have a T3 mechanical fuel pump that I would like to get a new diaphragm<br>
> > for. It's a Brosol pump with a 4 screw top cover. Do they make kits for<br>
> > these? The pump is in good shape and works, but the diaphragm is<br>
> starting<br>
> > to stiffen up after sitting and won't push fuel any more. Taking it<br>
> apart<br>
> > and moving it a little usually gets it working again.<br>
> ><br>
> > <a href="https://ibb.co/8cZsTnz">https://ibb.co/8cZsTnz</a><br>
><br>
> It's possible that the problem is not with the diaphram, but with the<br>
> check<br>
> valves. Clean any dried gas residue off them, or they can stick and not<br>
> work.<br>
><br>
> I don't know much about the mechanical fuel pumps, but, in general, old<br>
> rubber parts that were in contact with gasoline for a long time tend to<br>
> get<br>
> quite stiff if they are allowed to dry out. The first thing I would try<br>
> would be to<br>
> let the diaphram soak in gasoline for a few days, to see if that helps.<br>
><br>
> If that works, reassemble the pump with some grease on the non-gasoline<br>
> side, to help keep some petroleum oil in contact with that side of the<br>
> rubber.<br>
><br>
> I don't recommend just flexing the rubber to soften it up; that's more<br>
> likely to<br>
> break it.<br>
><br>
> I don't know if a kit for a different maker would fit. And those kits are<br>
> getting<br>
> scarce. You might have to resort to buying a new pump.<br>
><br>
> I have some silicone diaphram material if you'd like to try making your<br>
> own.<br>
> This came from Russ, years ago, and should be quite good, but you'd have<br>
> to cut and punch it to shape, and do the rivet in the center.<br>
><br>
> --<br>
> *******************************<br>
> Jim Adney, jadney@vwtype3.org<br>
> Madison, Wisconsin, USA<br>
> *******************************<br>
><br>
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