Fuelpump rebuild gl1000 (It worked)

Post your "How To", or share tips and tricks about maintenance related to four cylinder Wings. Only registered users can read this forum.

Moderators: Whiskerfish, Forum Moderators

User avatar
Gary1945
Silver Member
Silver Member
Posts: 769
Joined: Wed Dec 19, 2007 2:49 am
Location: Tallahassee Fl

Post #16 by Gary1945 » Sat Jul 26, 2008 1:36 am

That looks like many a fuel pump ive installed on many GM's,a 1960 Pontiac 389 Bonniville for sure I owned and it looks to be it. It also fits some Chevys too to be sure. Ask for one and see for yourself. have a good day all. :)
Gary Andrews Sr. 1981 GL1100 Standard

User avatar
peteybug
Silver Member
Silver Member
Posts: 787
Joined: Sun Feb 10, 2008 2:20 pm
Location: northern new york

Post #17 by peteybug » Mon Jul 28, 2008 9:53 am

Ok it's been a week and going great. Have put a little over 500 mils on the pump. More good news also got a roll of material from a supplier at work. It nitrial rubber, made a couple diaphrams out of it and put it on one of my other bikes and is working good so far. When salesman gave it to me I put a chunk in gas and soaked it for a week. Gas had no effect on it. So may have found stuff that will work for everyone!! If it pans out will be glad to share.
love new ideas for old wing's. AS I have three and am always working on them

ImageImageImage

User avatar
Whiskerfish
President
President
Posts: 32628
Joined: Thu Feb 16, 2006 9:34 pm
My Album: http://www.ngwclub.com/gallery/v/wingmans/whiskerfish/
Location: Norfolk Va

Post #18 by Whiskerfish » Mon Jul 28, 2008 10:11 am

Nitrile is probably about the best compund available for this. Does it have any reinforcing web internally?? If it was made corretly Nitrile will not be affected by Gas or any other pet products.

All other Fuel tanks in the Helicopters I worked on had a 60 month life limit. The Nitrile made ones were not a scheduled removal item and were classified as "remove upon condition" this basically meant that they were approved for use indefinetly. The only time I ever saw any fail was when they were punctured or installed improperly.

Image

Chart is from here: http://www.delford-industries.com/rubber_materials.html
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!

User avatar
peteybug
Silver Member
Silver Member
Posts: 787
Joined: Sun Feb 10, 2008 2:20 pm
Location: northern new york

Post #19 by peteybug » Mon Jul 28, 2008 12:01 pm

Two layers of nitrile with some sort of string fiber inbetween. The sales man told me he was pretty sure it woud hold up. Only problem I had was I had to strech out spring under the diaphram as this stuff is a little stiffer. The best part is our mill uses this stuff for a barrier between our stack rolls. When the edge of it gets wore down running on a steel roll they toss it. That means Ill get tons of it free!! :twisted: Whitch translates into I'll have a life time supply to share. :-D
love new ideas for old wing's. AS I have three and am always working on them



ImageImageImage

User avatar
Gary1945
Silver Member
Silver Member
Posts: 769
Joined: Wed Dec 19, 2007 2:49 am
Location: Tallahassee Fl

Post #20 by Gary1945 » Mon Jul 28, 2008 12:19 pm

peteybug you have a PM.
Gary Andrews Sr. 1981 GL1100 Standard

User avatar
WingerDave
Silver Member
Silver Member
Posts: 644
Joined: Mon Sep 12, 2005 7:22 am
My Album: http://www.ngwclub.com/gallery/v/wingmans/album225/
Location: The Netherlands

Post #21 by WingerDave » Tue Jul 29, 2008 5:29 am

Absolutely fantastic respekt2 .

Now i just need to source some of that stuff over here.

Dave.
If it ain't broke, don't fix it.

'80-'81 GL 1100 Hybrid Vetter Interstate 90K km
1989 GL1500 58K mls

Previous bikes

1973 Suzuki GT 500
1975 BMW R60/6
1982 Suzuki GS 550
1980 GL1100 (frame went to current bike, rest parted out)
1983 GL1100 Interstate

User avatar
peteybug
Silver Member
Silver Member
Posts: 787
Joined: Sun Feb 10, 2008 2:20 pm
Location: northern new york

Post #22 by peteybug » Tue Jul 29, 2008 9:07 am

Winger if this pans out Ill see what I can do about shipping some. Give me some time I would like to find the same stuff only a little thinner. This is thicker than org. The rep from the company said he's sure they make differant thicknes's.
love new ideas for old wing's. AS I have three and am always working on them



ImageImageImage

User avatar
peteybug
Silver Member
Silver Member
Posts: 787
Joined: Sun Feb 10, 2008 2:20 pm
Location: northern new york

Post #23 by peteybug » Thu Jul 31, 2008 1:27 pm

Ok if anyone wants to try a sample let me know. I will mail some out free of charge. I can handle the first 10 request for now. This will be for you to test out. So pm me and I will get back to the ones I can mail to, for now.
love new ideas for old wing's. AS I have three and am always working on them



ImageImageImage

User avatar
Whiskerfish
President
President
Posts: 32628
Joined: Thu Feb 16, 2006 9:34 pm
My Album: http://www.ngwclub.com/gallery/v/wingmans/whiskerfish/
Location: Norfolk Va

Post #24 by Whiskerfish » Fri Aug 01, 2008 7:13 pm

Ok I got mine installed. I have to wait a couple of day to check it out as the pump was very nasty looking and needs painted before it goes on my bike. The only challenge I had with the install was trying to keep the post from spinning while I was running the tap down it. I ended up using a 1/8th " drill and a 4 x.70 tap. Matches some surplus float bowl screws I had. I ended up holding it still with a pair of side cutters.
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!

User avatar
peteybug
Silver Member
Silver Member
Posts: 787
Joined: Sun Feb 10, 2008 2:20 pm
Location: northern new york

Post #25 by peteybug » Sat Aug 02, 2008 9:12 am

:lol: oops forgot to mention that whisker sry I used needle nose.
love new ideas for old wing's. AS I have three and am always working on them



ImageImageImage

heraldhamster
Honored Life Member
Honored Life Member
Posts: 4467
Joined: Wed Jun 28, 2006 2:52 pm
Location: up by the Canadian border in WA state

Post #26 by heraldhamster » Sat Aug 02, 2008 10:18 am

Whiskerfish wrote:... 1/8th " drill and a 4 x.70 tap...


I think that's what I picked up yesterday for this same job. and a S/S machine screw to match. won't have time for it this weekend, though.
sorta bulldogged custom 1978 GL1000 - "geekster" - daily rider
full Vetter dress 1979 GL1000 - "Barge" - daily rider (currently down)
1986 1200 Aspencade - "Heart of Gold"
1990 1500 Aspencade - It's ALIVE! but with a green drool...
1978 for $100 - project in worx
1978 from a previous member here - taking up space
my original '79 bought in '91 - replacing engine (eventually, maybe someday)

H2G2=42

A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity. ~ Robert A. Heinlein

The good thing about science is that it's true whether or not you believe in it. ~ Neil deGrasse Tyson

User avatar
lcallison
Silver Member
Silver Member
Posts: 904
Joined: Sat Aug 20, 2005 10:33 pm
Location: Rogers, AR

Post #27 by lcallison » Sat Aug 02, 2008 11:31 am

Both my fuel pumps are good and I have a spare. Once you decide on the best product for the diaphragm, post it please with part number and supplier. It would sure be a boon to the rest of us. Great job on figuring this out. I had thought there should be a way to fix them, but hadn't worked much on figuring it out. Kudo's!!!
Larry
84 GL1200A
79 GL1000

User avatar
Whiskerfish
President
President
Posts: 32628
Joined: Thu Feb 16, 2006 9:34 pm
My Album: http://www.ngwclub.com/gallery/v/wingmans/whiskerfish/
Location: Norfolk Va

Post #28 by Whiskerfish » Sat Aug 02, 2008 9:30 pm

Ok I been playing with this a good part of the day. I have some issues!!!

Pics Below

First there are 2 different manufacturers of these pumps!! And yes they are different. I installed my pump and got no flow at all. The check valves in the top were good and I got a good siphon through it but no pump action at all. I thought that maybe a shortcut I had taken was the problem. I had cut my screw down to about 1/2 inch and it was too long so I added a couple of washers under the head. It went together fine but I am pretty sure the head clearance against the top of the pump was inadequate for good operation.

So I took it apart again and cut the screw down some more. I was comparing the pumps and realized the the lever that rides on the cam on the one I was working with had a Lot more free movement before I felt any load from the big spring under the Diaphram. So I kept cutting down the screw and checking it. I got to the point that I have no washers at all under the head of the screw and I still have too much freeplay on the lever when the cap is on. I suspect that in the unloaded position the Screw head is hitting the top of the pump cap and that @ 1/8 inch of lost movement is preventing a good flex of the Diaphram. I am kind of guessing that this is the problem right now. Tomorrow morning I will grind off the head of the screw and leave just enough metal to hold things together and try it again. I am expecting a somewhat reduced flow due to the thickness of the material. This stuff measures at about 1.5 mm and the one that came out was 1.25mm.


Image




Image


The pics below are just to illustrate the differences between the 2 different manufacturers

Image


Image

The 2 different caps

Image


Image
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!

User avatar
peteybug
Silver Member
Silver Member
Posts: 787
Joined: Sun Feb 10, 2008 2:20 pm
Location: northern new york

Post #29 by peteybug » Sat Aug 02, 2008 10:45 pm

I had same problem at first. I think its due to thicker rubber or not molded. I used a small ammont of heat on rubber then put screws in snug. Then worked pump by hand. If you listen to pump you can hear it pump tighten screws and do it again you can here and feel it pump or stop. If it stops loosen and work by hand. Also had to strech spring. it took a few times befor it loosen enugh to put on bike.
love new ideas for old wing's. AS I have three and am always working on them



ImageImageImage

User avatar
Old Fogey
Honored Life Member
Honored Life Member
Posts: 7141
Joined: Mon Aug 27, 2007 11:31 pm
Location: Glasgow, Scotland
Contact:

Post #30 by Old Fogey » Sun Aug 03, 2008 12:19 am

I found a couple of suppliers of NBR sheet over here. Whooo, Not cheap!

However, one supplier will suppy by the metre x1200mm wide, no 1.25 but 1.0 or 1.5mm thick. That would make a lot of diaphrams.

They can also supply Viton sheet which may be better; any thoughts?

Does the original diaphram have reinforcing in it like the ones you've made up?
"Impossible Is Just a Level of Difficulty!..."
If I'd wanted you to understand, I would have explained it better! (Johann Cruyff)
I’d give my right arm to be ambidextrous! :-D


Return to “How To 4-Wings (Tutorials Only)”

Who is online

Users browsing this forum: nakedinterstate81 and 1 guest