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| Re: [GMCnet] Main tank/auxiliary tank [message #213819 is a reply to message #213818] |
Tue, 09 July 2013 16:07   |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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| Ron and Carol Barkley wrote on Tue, 09 July 2013 13:39 |
What does the switch on my dashboard do that is labeled "main tank/auxiliary tank"?
Ron Barkley
1976 Eleganza II
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IF everything is working as designed, that switch has two functions.
1. it switches the tank selector valve so that gas is drawn out of either the main (rear) tank or the auxiliary (front) tank.
2. it switches between the two sending units on the different tanks.
The tanks are somewhat different that a normal dual tank system as they are tied together by the filler tube at the center of the tanks (up and down) they tend to equalize levels until the fuel level gets below the fill inlet, then fuel is drawn from whichever tank is selected. The idea is that you will have a reserve in the front tank of about eight gallons, after the rear tank is run dry.
There is an illustration somewhere of how this all works. I'll try to find it.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] Main tank/auxiliary tank [message #213821 is a reply to message #213818] |
Tue, 09 July 2013 16:12 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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| Ron and Carol Barkley wrote on Tue, 09 July 2013 13:39 |
What does the switch on my dashboard do that is labeled "main tank/auxiliary tank"?
Ron Barkley
1976 Eleganza II
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Here is some good info on the tanks from the GMC photo site:
http://www.gmcmhphotos.com/photos/fuel-lines/p29766-fuel-line-schematics.html
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] Main tank/auxiliary tank [message #213822 is a reply to message #213818] |
Tue, 09 July 2013 16:05 |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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That is for your two gas tanks. Main tank positions allows you to use
approximately 40 gals with a reserve tank (auxiliary tank) of about 10
gals. You should also get a Tell-Tale indicator that reads "Low Fuel" when
you get to the last ten gallons.
On Tue, Jul 9, 2013 at 2:39 PM, Ron and Carol Barkley <
rvandcabarkley@hotmail.com> wrote:
> What does the switch on my dashboard do that is labeled "main
> tank/auxiliary tank"?
>
> Ron Barkley
> 1976 Eleganza II
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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