im trying to replace a gas hose on my 1977 F-100 and i am new to automotive work so any help is helpfull but on the top of my gas tank i have 2 hoses the both are clamped on and move to the spout where you put gas in and they connect to each other at the end and i have to replace both of them due to cracking and leeking and i cant reach the clamps on the tank due to the bed so how do i replace this hose? do i remove the bed? or lower the tank? well i tryed to lower the tank and after i got the 2 straps off it would not budge. i guess i could just cut the hose off and cut the clamp i just cant reach there the screw is on the clamp.

if i posted this in the wrong section plz let me know so

 

These are called the fuel filler neck hose (larger one) and overflow/vent hose. I've replaced them on mine before and will have to again soon.

If the clamps are facing up, can you get an open/box end wrench on the hose clamps? I think that's what I did the first time. I put them back on so I could reach them better next time from underneath.

Now, I use a small socket on a universal joint which is mounted on an extension and a good deal of patience on the hose clamps. Once they were all loose, I unbolted the filler neck from the bedside (part with the gas cap) and removed it from the hose. You may need a flatblade screwdriver and work it between the hose and the metal pipe to break the seal. Then do the same where the hoses attach to the tank. Try to do this when the tank is low on fuel to avoid spillage / leakage.

I usually smear a light coating of wheel bearing grease around the outside diameter of the pipes to help ease the new hoses in place. (works good on radiator and heater hoses as well)

 

thank you very much for your help but i already removed the bed of the truck to get to it.

 

well i finally got it replaced by removing the bed and then had to make a custom hose out of the old hose and some new hose and steel exhaust pipe and lots of clamps thank you very much with all the help.

 

i find out now i could have got to LMC web sight and order on from them