[Bullrun]

Have a 51 gallon RDS in bed fuel tank on order from Northern Tool.
A splice in kit can be purchaesd from RDS that shows the 1.5 inch
metal fill tube cut and a metal T fitting installed to allow the
fuel from in bed tank to flow(Gravity) into factory fill tube.
I would rather cut into the 1.5 inch fuel hose to make connection
but that looks to be a lot harder job due to long length of the
metal fill tube.
Any one installed this splice or had problems from it(leaking etc)
I know I could use 12 volt pump etc , just wanted it to keep it
simple as possible. Thanks 2006 F-250 CC Short bed

 

[SmokeyWren]

A simple gravity feed is illegal. The legal gravity feed parts are more expensive. If you buy an "auxiliary" in-bed tank, then it should come with the legal parts - or at least identify the part numbers and how-to instructions. But it will cost more than a simple refuel tank.

But if you want to install a "refuel" tank by hooking up a gravity feed, you'll probably be illegal.

Northern Tool sells a 51-gallon "auxiliary" in-bed fuel tank/toolbox combo, but it doesn't say it's an RDS. Click here. If that's the one you ordered, then you can also order a legal diesel hook-up kit from them.

I don't see the 51-gallon RDS tank. They do have a 69-gallon RDS auxiliary fuel tank, which also has available the legal diesel hook-up kit. Click here.

 

[Bullrun]

The 51 gallon tank is the one I ordered.It is a RDS tank. The
hookup kit is also from RDS.Both state legal for diesel use
Thanks

 

[NCHornet]

I would stick to the kit they sell. That way you have no problems later down the road. I agree the gravity feed is the simplest way to go.

 

[MDarrough]

[ QUOTE ]
the 1.5 inch
metal fill tube cut and a metal T fitting installed to allow the
fuel from in bed tank to flow(Gravity) into factory fill tube.


[/ QUOTE ]

That's exactly what I did on my '99. It worked great!! Cutting a hole in the bed was the hardest part. /ubbthreads/images/graemlins/eek.gif /ubbthreads/images/graemlins/depressed.gif

I had my brother-in-law make my tank, so I'm not familiar with RDS or the kit the offer, so I just made my own "kit". I also lnstalled a ball valve in the bed just before the line went through the bed, and another ball valve under the bed that I could reach through the fender well. Probably overkill, but better safe than sorry. I also installed a spin-on filter between the two tanks.

Let me know if I can answer any questions for you.

Mark

 

[Bullrun]

The kit RDS makes has a valve in the bed,but they advise you can
leave that on all the time and the kit will not allow fuel to spill
from the factory fuel door.Don't know yet if I'll trust that,only
real concern was possible leaks around splice while fueling truck.
The RDS kit consist of the T fitting and two pcs. of 1.5 inch fuel
hose to bridge from the T to the factory fill tube along with in
bed valve and fuel line. Thanks for all

 

[FTG-05]

[ QUOTE ]
A simple gravity feed is illegal. The legal gravity feed parts are more expensive. If you buy an "auxiliary" in-bed tank, then it should come with the legal parts - or at least identify the part numbers and how-to instructions. But it will cost more than a simple refuel tank.

But if you want to install a "refuel" tank by hooking up a gravity feed, you'll probably be illegal.

Northern Tool sells a 51-gallon "auxiliary" in-bed fuel tank/toolbox combo, but it doesn't say it's an RDS. Click here. If that's the one you ordered, then you can also order a legal diesel hook-up kit from them.

I don't see the 51-gallon RDS tank. They do have a 69-gallon RDS auxiliary fuel tank, which also has available the legal diesel hook-up kit. Click here.





[/ QUOTE ]

Look at your first link again - it most certainly is a RDS tank, look right under the "larger image" link. As far as I know, all the aux/transfer tanks that NT sells are RDS tanks.



Bullrun, The problem of leaking will not come from cutting the OEM fuel fill line to install your tee, assuming you use decent hose clamps. The tee is designed to be installed into the rubber fill line, not the metal line, at least per the directions I received with mine.

The problem of leaking will probably come from the OEM fuel tank leaking around the top of the tank seal area as has been reported here at least three times on this site that I know of. One person took there's in to have it fixed by Ford and I know he has no aux tank installed. There have been at least two others reporting the same problem. This is why I don't leave my tank "always on" when I refuel from my aux tank (100% of my fuel goes through my aux tank).

The RDS gravity feed kit will fill the OEM tank to a level lower than filling the fill tube all the way to the top at the gas station. The ball/check valve on the top of the tee prevents it.

PM me if you want to see some of the pics of my install of my NT/RDS aux fuel tank with 3 micron water separator fuel filter install.

One pic of my install here: http://photos.thedieselstop.com/showphoto.php?photo=31282&papass=&sort=1&thecat=3656



Good luck.

Al

 

[MDarrough]

[ QUOTE ]
The tee is designed to be installed into the rubber fill line, not the metal line,

[/ QUOTE ]

I don't know what I was thinking. You are correct, tee goes in the rubber line, not the metal.

And, I too only opened the valve to "fill up" the OEM tank. I didn't leave it open. It's been a while since I had mine.

Also, I didn't realize you have an '06. I don't think I would do it on a truck still under warranty.

Mark

 

[FTG-05]

[ QUOTE ]
[ QUOTE ]
The tee is designed to be installed into the rubber fill line, not the metal line,

[/ QUOTE ]

I don't know what I was thinking. You are correct, tee goes in the rubber line, not the metal.

And, I too only opened the valve to "fill up" the OEM tank. I didn't leave it open. It's been a while since I had mine.

Also, I didn't realize you have an '06. I don't think I would do it on a truck still under warranty.

Mark

[/ QUOTE ]

Why not? I don't see an aux fuel tank impacing many OEM systems, if any (one example noted below), plus the addition of the 3 micron WS fuel filter should alleviate dirty or water-in-fuel concerns if and when I do have an engine related problem. My .02.



Another reason for not keeping the fuel valve open all the time is that you will eventually, at least on my '06, get a CEL with 0480 error code (I think it's 0480); it's the code that says the fuel level sensor is bad since the vehicle has been driven over 200 miles and the sensor hasn't moved. I got it the first time I used my aux fuel tank 100%; since then, I refuel in my driveway when the OEM tank gets down to about half full or so, then shut the valve closed.

Al

 

[ff0326]

I have a 60 gal in the bed tank with gravity flow fill. I have found in the last 4 trucks that it's been in that fuel leaks from a tee on top of the tank I think that it's a vent line. Anyway, the tee has some sort of cap on it that fuel will leak around. I put small hose clamps on all three parts of the tee and this solved the problem. Do it now and save a mess later.

 

[FTG-05]

Thanks! Were you able to do this with the tank installed or did you have to drop it? When one poster here had his leak (the one without the aux tank) he said he could barely see the upper part of the OEM tank to see where the leak was coming from.

As a prevention measure, I'd like to secure these hoses like you did.

LMK.

Thanks,

Al