1981 Fuel Pump REBUILD???


Information and questions on GL1100 Goldwings (1980-1983)
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N2PPN
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1981 Fuel Pump REBUILD???

Postby N2PPN » Tue Jul 24, 2012 9:17 am



Anyone ever locate a source for new diaphragms to rebuild the fuel pumps on our GL's??

I had read on another GW forum about a guy who had located the diaphragm material and was offering it up for sale, but now I can't find him....

Rich


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SteveB123
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Re: 1981 Fuel Pump REBUILD???

Postby SteveB123 » Tue Jul 24, 2012 11:35 am

Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

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scotterichmond
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Re: 1981 Fuel Pump REBUILD???

Postby scotterichmond » Tue Jul 24, 2012 5:06 pm

Thanks for that info I saved it in PDF and will be sharing with all in need.

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N2PPN
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Re: 1981 Fuel Pump REBUILD???

Postby N2PPN » Tue Jul 24, 2012 8:28 pm

The posting I referred to didn't mention the use of a lathe and drilling out ball bearings... If I remember it correctly it just involved grinding off the head of the diaphragm plunger shaft and replacing the diaphragm material after you drilled and tapped the shaft for a screw rather than the rivet head... You didn't have to disassemble the pump, just had to hold the shaft steady while drilling it for the tap on a drill press... seemed a little less "invasive" than removing ball bearings and such....

Here is a link to it:
http://classicgoldwings.com/forum/viewt ... 279#p45001


I will be attempting this on a spare pump I have and see just how hard it will be to replace the diaphragm material... I am searching for 3mm thick Vitron sheets... I don't think they need the fabric backing on them, they need to be real flexible to develop proper vacuum action and I think the fabric backing might limit the flexibility of the diaphragm.... besides, if I am successful in repairing the pump, I'll be able to duplicate the repair anytime it's needed in the future if I notice a leak from the weep-hole...



Rich
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Ride Happy!

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littlebeaver
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Re: 1981 Fuel Pump REBUILD???

Postby littlebeaver » Tue Jul 24, 2012 11:11 pm

Rich I have not had to fool around with the pump diaphragm yet but I gotta tell ya, it's looks a aweful lot like the diaphragm I used in my aftermarket vacuum advance you can see what I'm talking about on my advance rebuild on that same site..Just saying I bet it's the correct size..Or wait here it is for ya..
wonder if it would fit
wonder if it would fit
maybe it should be flat, I do not know, I have not dug into this yet..Sound's pretty simple though...

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N2PPN
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Re: 1981 Fuel Pump REBUILD???

Postby N2PPN » Wed Jul 25, 2012 7:23 am

Hmmmmmm,

It might Beaver, it might.....

Further investigation into this matter is going to be required I see......


Rich
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Ride Happy!

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RBGERSON
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Re: 1981 Fuel Pump REBUILD???

Postby RBGERSON » Wed Jul 25, 2012 9:12 am

THAT'S ME, I STILL HAVE A COUPLE LEFT..OUT OF TOWN UNTIL mONDAY..BUT PAYPAL $10 TO RBGERSON..AT..hOTMAIL.COM AND WHEN i GET HOME i'LL MAIL IT OUT EMAIL YOUR ADDRESS TO ME SAME ADDRESS
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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littlebeaver
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Re: 1981 Fuel Pump REBUILD???

Postby littlebeaver » Wed Jul 25, 2012 11:33 am

Rich RBG is a really good guy, I don't think he will steer ya wrong there...I was looking at some of the photo's and I wonder if a leather punch tool would work to punch the holes out, it might make that part of the mod simple...

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N2PPN
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Re: 1981 Fuel Pump REBUILD???

Postby N2PPN » Wed Aug 01, 2012 7:13 pm

I haven't had a chance to contact Rich RBG yet.... I am looking into having the diaphragms die-cut and made in bulk by a local gasket company... still in the "negotiation" phases...

Rich


Don't Worry,
Ride Happy!


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