1995 F250 In-bed Aux Tank transfer line install
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1995 F250 In-bed Aux Tank transfer line install
I've obtained a 90-gallon in-bed aux tank and want to set it up to gravity feed into my OEM filler neck. Can anyone tell me what I need to do to install my RDS transfer kit to my front tank fill line? I was looking at it and realized that I can't just cut the filler neck and install it with hose clamps since there is a rubber hose running inside the steel filler pipe. Is there no way to set up this gravity-feed aux line so that it fills through the OEM filler neck? Is there some other kit I need instead of the RDS #011025?
I can weld in a fitting directly to the steel filler that the aux fill valve will screw into but then I need to figure out a way to move the inner rubber hose back in to place such that diesel would still flow into the tank and not all over everything.
I'd love to get this thing right and have significantly more capacity. Thanks for any help!!
I can weld in a fitting directly to the steel filler that the aux fill valve will screw into but then I need to figure out a way to move the inner rubber hose back in to place such that diesel would still flow into the tank and not all over everything.
I'd love to get this thing right and have significantly more capacity. Thanks for any help!!
Cargo Master
Joined: Nov 2010
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Looks fine to me. Does the RDS system you speak of trigger fill by level control and fill till full or is it a manual transfer? Does it have a hi hi shutoff switch? How does it work?
Diesel has such a high flash point you do not need to worry about thermal vapor release, unless you get fuel in ND at -40 and then figure out how to get to get to Cabo with a topped off ice cold tank at 120 degrees ambient :-)
When I fuel up I fill the truck to the top of both filler neck, never had an issue, nor do I expect to.
Diesel has such a high flash point you do not need to worry about thermal vapor release, unless you get fuel in ND at -40 and then figure out how to get to get to Cabo with a topped off ice cold tank at 120 degrees ambient :-)
When I fuel up I fill the truck to the top of both filler neck, never had an issue, nor do I expect to.
Fleet Owner
Joined: Aug 2004
Posts: 20,419
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From: AZ
What I did after doing the vent mod was to put a hole in the rubber hose and insert a plastic small hose into the big rubber hose just enough to get it in there. I then used marine tex around the outside to stop any leaks. In the bed I drill a small hole, ran this line thru to a small transfer pump. Between the pump and my aux tank I installed a electric check valve. Inside the cab I have a toggle switch so when I flip it power is supplied to the pump and check valve. It will fill my tank a little faster then I can use it when driving so I watch the tank fill. This is not a professional install but works great, I have been using it for years. Got the pump at NAPA. When I first installed it I didn't realize the gravity flow and was greeted by a puddle of fuel on the ground the next day, LOL
Fleet Mechanic
Joined: Nov 2006
Posts: 1,952
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From: Knoxville, TN
What I did after doing the vent mod was to put a hole in the rubber hose and insert a plastic small hose into the big rubber hose just enough to get it in there. I then used marine tex around the outside to stop any leaks. In the bed I drill a small hole, ran this line thru to a small transfer pump. Between the pump and my aux tank I installed a electric check valve. Inside the cab I have a toggle switch so when I flip it power is supplied to the pump and check valve. It will fill my tank a little faster then I can use it when driving so I watch the tank fill. This is not a professional install but works great, I have been using it for years. Got the pump at NAPA. When I first installed it I didn't realize the gravity flow and was greeted by a puddle of fuel on the ground the next day, LOL
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Fleet Owner
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New User
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Looks fine to me. Does the RDS system you speak of trigger fill by level control and fill till full or is it a manual transfer? Does it have a hi hi shutoff switch? How does it work?
Diesel has such a high flash point you do not need to worry about thermal vapor release, unless you get fuel in ND at -40 and then figure out how to get to get to Cabo with a topped off ice cold tank at 120 degrees ambient :-)
When I fuel up I fill the truck to the top of both filler neck, never had an issue, nor do I expect to.
Diesel has such a high flash point you do not need to worry about thermal vapor release, unless you get fuel in ND at -40 and then figure out how to get to get to Cabo with a topped off ice cold tank at 120 degrees ambient :-)
When I fuel up I fill the truck to the top of both filler neck, never had an issue, nor do I expect to.
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