Anyone tried this method in replacing the fuel filler hose?
https://www.ford-trucks.com/forums/3...ml#post3595850

I grabbed the picture before the link went bad, Ill post it asap.

Also just to clarify, which tank is the AUX tank and which tank is the MAIN. I have 2 tanks, one is directly behind the cab, not in cab, the other tank is above the spare wheel behind rear axle.

 

 

If I have read on here right, the main is the front tank and the aux is the one aft of the rear axle.

At least its that way for the switch, I do believe.

 

Main tank is at rear behind axel, aux is the front tank. If you switch does the opposite of this then your hoses are hooked up wrong to the switch solenoid. This comes directly from the Ford shop manual, but if you have a 4x4 or crew cab the in cab tank is main tank.

 

According to the owners manual for my '78 "the 'MAIN" position supplies fuel to the engine from the midship fuel tank." So, at least in '78, the front or midship tank is the main and the rear, or aft is the auxiliary

 

My 78 owners manual says the exact same as this.

 

Thanks for the info & clarification fellas.

I went ahead and ordered the rubber from Dennis Carpenter.
Fuel Tank Filler Hose | Dennis Carpenter Ford Restoration Parts

Anyone know if I need to drop the tank to replace these hoses properly?

Tips on how to do this the best way?

 

How long is the stock fuel filler hose for each tank?
I need to know to get some from oriellys.

 

Check my build thread in my signature. I just recently did this without dropping the tank or lifting the bed out.

Not sure on the length, but you could probably call a supplier(Dennis Carpenter)DC or whomever) and see if they can give you a length. Or I could go out tomorrow and give you a rough guesstimate.

Since the gap between the bed and the frame is small, you will need to unbolt the tank(after undoing the hose clamps at the tank) and let it drop a few inches so you can get the new hose around the neck of the tank. That's the hardest part. After that, the rest is easy. I bought mine thru my dealership, they stock DC filler hoses. it was a pretty good length with one end angled. I used the angled end at the gas tank neck.

 

I just got my replacement fuel fillers, I know some have done this without dropping tanks but I am planning on dropping them completely, just sounds too tight to get to everything with out a lot of knuckle busting! Also seems like a good time to clean out the tanks and check the sending units. Also wondering about adding some undercoat while they are out.

Hopefully this project will happen in the next couple of weeks, if you get to yours first let us know how it goes.

 

For my hose issue, I went to PNP and yanked the steel filler tube and cut a section out to make a coupler. This worked well.

 

The filler hose and the vent hose for the rear tank (above spare tire) are 15 inches long, I just replaced mine. I don't have the other tank so can't help with that one.

 

my 76 owners manual says aft tank is main, mid is aux