Home » Public Forums » GMCnet » Fuel tank sender location
| Fuel tank sender location [message #113754] |
Mon, 31 January 2011 18:49  |
Jim Wagner
Messages: 339
Registered: February 2004
Location: Brook Park, Oh
Karma: 0
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Senior Member |
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I have loaded some photos showing the access holes in the floor that allows access to the fuel tank floats. I followed Gene Fisher,s drawing showing the location. They were right on the money. (Thanks Gene). Luck was with me as the needed holes were in the center of one of the laminate floor planks. I did have to cut the end of one plank so it would slide out. When I reinstall the floor plank I won't use the snap lock feature on that end. Access to the tank floats is now just pulling the end trim and sliding the floor plank out.
http://www.gmcmhphotos.com/photos/showgallery.php?cat=5702
Jim Wagner
Brook Park, oh
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| Re: [GMCnet] Fuel tank sender location [message #113839 is a reply to message #113836] |
Tue, 01 February 2011 10:47  |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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wow
I like the cover, I will link it to the topic on my web page, I am not
sure of my final cover, but it will be something.
I am now looking at connecting the two tank drains with a connecting pipe,
(ala JimB) , so that there is effectively:
one tank,
one sender,
one pickup,
no tank selector,
no dash switch.
one set of fuel lines.
I think the "dis-functional, reserve" is a waste of time, since it does not
work up hill and down ;>)
will let you know
gene
On Tue, Feb 1, 2011 at 8:34 AM, Jim Wagner <slwjmw@sbcglobal.net> wrote:
>
>
> It was just something to do. I like to tinker and this seemed like a fun
> project. Winter in northern Ohio gives you plenty of time to tinker. A
> little heat in a snow covered GMC is quite comfortable.
> Jim Wagner
> Brook Park, oh
>
> So why did u have to go in now?
>
> Gene
>
> Sent from McDonalds
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
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>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Fuel tank sender location [message #113921 is a reply to message #113839] |
Tue, 01 February 2011 22:55 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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"I think the "dis-functional, reserve" is a waste of time, since it does not
work up hill and down ;>)"
I'm not sure I agree with that -- gotta think about whether I'd rather be
climbing a hill with 12 gallons of gas piled up at the rear of the Main
tank, or 6 gallons piled up at the rear of the Aux and 6 more in the Main.
...
...
...
Well, maybe some of the 12 gallons would be reachable by the Main pick up
tube -- provided that's the one I've got connected to a pump. But suppose I
choose to put a pump only on the Aux pickup? Or am going downhill with the
pump on the Main?
...
...
...
Maybe I just won't go to the trouble to hang something else down below the
frame. Or, if I do, maybe I'll keep both pumps and the selector switch.
Ken H.
On Tue, Feb 1, 2011 at 11:47 AM, Mr.erf ERFisher <mr.erfisher@gmail.com>wrote:
> wow
>
> I like the cover, I will link it to the topic on my web page, I am not
> sure of my final cover, but it will be something.
>
> I am now looking at connecting the two tank drains with a connecting pipe,
> (ala JimB) , so that there is effectively:
> one tank,
> one sender,
> one pickup,
> no tank selector,
> no dash switch.
> one set of fuel lines.
>
> I think the "dis-functional, reserve" is a waste of time, since it does not
> work up hill and down ;>)
>
> will let you know
> gene
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Fuel tank sender location [message #113922 is a reply to message #113921] |
Tue, 01 February 2011 23:08 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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well, you see
http://gmcmotorhome.info/tank.html
when you go down hill almost all of the gas ends up in the aux , tank
if they are connected at the bottom it would return to the main tank, and
make both tanks equal again when you return to flat driving.
and
the efi puts most of the returned gas into the aux tank, as a result you are
always switching back and forth to use all the gas.
I think I will try it a while and see how it works
Just had to replace the selector valve ( not fun) and have a overflow leak
in some of the tank hoses ( 2x too many) the system is a pain in the butt.
gene
On Tue, Feb 1, 2011 at 8:55 PM, Ken Henderson <hend4800@bellsouth.net>wrote:
> "I think the "dis-functional, reserve" is a waste of time, since it does
> not
> work up hill and down ;>)"
>
> I'm not sure I agree with that -- gotta think about whether I'd rather be
> climbing a hill with 12 gallons of gas piled up at the rear of the Main
> tank, or 6 gallons piled up at the rear of the Aux and 6 more in the Main.
> ...
> ...
> ...
> Well, maybe some of the 12 gallons would be reachable by the Main pick up
> tube -- provided that's the one I've got connected to a pump. But suppose
> I
> choose to put a pump only on the Aux pickup? Or am going downhill with the
> pump on the Main?
> ...
> ...
> ...
> Maybe I just won't go to the trouble to hang something else down below the
> frame. Or, if I do, maybe I'll keep both pumps and the selector switch.
>
> Ken H.
>
>
> On Tue, Feb 1, 2011 at 11:47 AM, Mr.erf ERFisher <mr.erfisher@gmail.com
> >wrote:
>
> > wow
> >
> > I like the cover, I will link it to the topic on my web page, I am not
> > sure of my final cover, but it will be something.
> >
> > I am now looking at connecting the two tank drains with a connecting
> pipe,
> > (ala JimB) , so that there is effectively:
> > one tank,
> > one sender,
> > one pickup,
> > no tank selector,
> > no dash switch.
> > one set of fuel lines.
> >
> > I think the "dis-functional, reserve" is a waste of time, since it does
> not
> > work up hill and down ;>)
> >
> > will let you know
> > gene
> >
> >
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Fuel tank sender location [message #113949 is a reply to message #113941] |
Wed, 02 February 2011 10:28 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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I need a confirmation on the measurements from
the links below. It appears that the center of
the front sender location is very close to 85"
behind the "step" to the cockpit. Is that from
the rearmost part of the step?
Is the 41 1/2" measurement from the outside
edge of the door's sill plate?
I strongly suspect that I will need to do this
access process on "The Money Pit" and REALLY
don't want to make a wrong cut.
Yeah, I'm paranoid, too!
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
----------------------------------------
> To: gmclist@temp.gmcnet.org
> From: tlins@optonline.net
> Date: Wed, 2 Feb 2011 09:23:21 -0600
> Subject: Re: [GMCnet] Fuel tank sender location
>
>
>
> Jim Wagner wrote on Mon, 31 January 2011 19:49
> > I have loaded some photos showing the access holes in the floor that allows access to the fuel tank floats. I followed Gene Fisher,s drawing showing the location. They were right on the money. (Thanks Gene). Luck was with me as the needed holes were in the center of one of the laminate floor planks. I did have to cut the end of one plank so it would slide out. When I reinstall the floor plank I won't use the snap lock feature on that end. Access to the tank floats is now just pulling the end trim and sliding the floor plank out.
> >
> > http://www.gmcmhphotos.com/photos/showgallery.php?cat=5702
> >
> > Jim Wagner
> > Brook Park, oh
>
>
> Here is the actual measurements for the sender locations.
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=11963
>
> --
> Tom Lins
> Milltown, NJ
> 78 xPB
> GMC Dealer Training Tapes on CD
> GMC Maintenance Manuals on CD
> www.bdub.net/tomlins/
>
> http://www.escapees.com
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Fuel tank sender location [message #113969 is a reply to message #113949] |
Wed, 02 February 2011 14:43 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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here is all of the known information
http://gmcmotorhome.info/Fuel.html#senders
gene
On Wed, Feb 2, 2011 at 8:28 AM, D C *Mac* Macdonald <k2gkk@hotmail.com>wrote:
>
> I need a confirmation on the measurements from
> the links below. It appears that the center of
> the front sender location is very close to 85"
> behind the "step" to the cockpit. Is that from
> the rearmost part of the step?
>
> Is the 41 1/2" measurement from the outside
> edge of the door's sill plate?
>
> I strongly suspect that I will need to do this
> access process on "The Money Pit" and REALLY
> don't want to make a wrong cut.
>
> Yeah, I'm paranoid, too!
>
>
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ~~ ~ D C "Mac" Macdonald ~ ~~
> ~ ~ Amateur Radio - K2GKK ~ ~
> ~ ~ USAF and FAA, Retired ~ ~
> ~ ~ ~ Oklahoma City, OK ~ ~ ~
> ~~ ~ ~ "The Money Pit" ~ ~ ~~
> ~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
> ~ www.gmcmhphotos.com/okclb ~
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>
>
>
> ----------------------------------------
> > To: gmclist@temp.gmcnet.org
> > From: tlins@optonline.net
> > Date: Wed, 2 Feb 2011 09:23:21 -0600
> > Subject: Re: [GMCnet] Fuel tank sender location
> >
> >
> >
> > Jim Wagner wrote on Mon, 31 January 2011 19:49
> > > I have loaded some photos showing the access holes in the floor that
> allows access to the fuel tank floats. I followed Gene Fisher,s drawing
> showing the location. They were right on the money. (Thanks Gene). Luck was
> with me as the needed holes were in the center of one of the laminate floor
> planks. I did have to cut the end of one plank so it would slide out. When I
> reinstall the floor plank I won't use the snap lock feature on that end.
> Access to the tank floats is now just pulling the end trim and sliding the
> floor plank out.
> > >
> > > http://www.gmcmhphotos.com/photos/showgallery.php?cat=5702
> > >
> > > Jim Wagner
> > > Brook Park, oh
> >
> >
> > Here is the actual measurements for the sender locations.
> > http://www.gmcmhphotos.com/photos/showphoto.php?photo=11963
> >
> > --
> > Tom Lins
> > Milltown, NJ
> > 78 xPB
> > GMC Dealer Training Tapes on CD
> > GMC Maintenance Manuals on CD
> > www.bdub.net/tomlins/
> >
> > http://www.escapees.com
> >
> > _______________________________________________
> > GMCnet mailing list
> > List Information and Subscription Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Fuel tank sender location [message #114019 is a reply to message #113949] |
Thu, 03 February 2011 07:50 |
 |
Tom Lins
Messages: 372
Registered: February 2004
Location: St Augustine, FL
Karma: 1
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Senior Member |
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| k2gkk wrote on Wed, 02 February 2011 11:28 |
I need a confirmation on the measurements from
the links below. It appears that the center of
the front sender location is very close to 85"
behind the "step" to the cockpit. Is that from
the rearmost part of the step?
Is the 41 1/2" measurement from the outside
edge of the door's sill plate?
I strongly suspect that I will need to do this
access process on "The Money Pit" and REALLY
don't want to make a wrong cut.
Yeah, I'm paranoid, too!
|
Yes the 85" measurement is from rearmost part of the steps into the cockpit assuming you have the original plywood on the floor and steps.
The measurement from the door is from the edge of the original plywood flooring at the door. You can double check by measureing the tank since the sender is in the center of the tank.
One of the reasons the hole I cut in the floor for the front tank is so much larger and not directly over the sender is that I had some trouble transferring the measurements from the underside of the coach to the inside. Once I found the center of the front sender I was a lot more accurate cutting the hole for the rear sender.
I did not make the holes in the metal shields, they were there already.
Measure 5 or 6 times before you cut.
Tom Lins
St Augustine, FL
77 GM Rear Twin, Dry Bath, 455, Aluminum Radiator Quad-Bag Suspension Solar Panel
Manuals on DVD
YOUTUBE Channel: GMC Dealer Training Tapes
http://www.bdub.net/tomlins/
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I have been thinking about this for a couple of years now. I have new electric fuel pumps to drop in the tanks.