78PB onan fuel line to tank hookup?
- Thread starter LARRYT
- Start date
Here is a link to an top view of the tanks with the body off the frame. The generator tap is by the foot in the image. It goes to a dip tube that doesn't go all the way to the bottom of the tank so you can't run yourself out of gas and be stranded. https://www.gmcmhphotos.com/photos/fuel-tanks/p22690-fuel-tank1.html
Wally thank you ....very nice photos..just what i was looking for ! it appears that one might be able to replace the generators flexible fuel line to the tank steel pickup from under the vehicle . providing you have it high enough .. any input to this ??? larry
There's no way to access the fuel tank vent connection from under the vehicle without dropping the tank. That's usually not that bad of a job with a couple of ratchet straps and a drained tank. Pain in the ass, but not that big of a deal.
Replacing the flexible hose with a hard line would mean it's a do it once job. Nickel Copper or Poly Armor is typical, my preference is Nicopp, and the line transitions to rubber to the side of the tank where you can access the connection without dropping the tanks. While you're there, replace the other flexible lines on top of the tank with hard line.
Some years back, Emery Stora made a nice photo write up on the GMC Motorhome Photo Site about replacing with hard line, that'll walk you through the task. Not sure if that's searchable on this forum.
The vent connections are more inboard, and guaranteed inaccessible. He's asking about the generator fuel feed though, which is more in the corner of the tank.
I would guarantee it won't be easy, but impossible? I'd have to take another look.
I would guarantee it won't be easy, but impossible? I'd have to take another look.
Okay, thanks for the clarification and correction. My advice still stands - I don't mind making extra work for Larry!
Yeah, even in the corner of the tank, I'd bet you're still right. It's a tight area if I recall correctly. Maybe with some heavy-duty robotic surgeon's tools?Okay, thanks for the clarification and correction. My advice still stands - I don't mind making extra work for Larry!
And we all know how easily petrified rubber slides off of old hose barbs...
Page fifty on Emery Stora's article on in tank fuel pumps shows the pick-up tube for the Onan.
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thank you. Walley sent me some photos your sketch is right on i was surprised that the manuals do not show this
Richard the info .. makes for less work thanksOkay, thanks for the clarification and correction. My advice still stands - I don't mind making extra work for Larry!
Here is a link to a photo of my fuel connection to the generator on my 77 Palm Beach. You may be able to reach it from below as it is very close to the rear driver side corner of the rear tank.
I used a piece of hardline to bring the connection down where I could service the rubber lines going forward. I believe I brought it forward for ease of access, but that was over 10 years ago.
I used a piece of hardline to bring the connection down where I could service the rubber lines going forward. I believe I brought it forward for ease of access, but that was over 10 years ago.
Fuel Tank Lines
<p>I hand replaced the rubber lines in 2010, but by 2014 they had deteriorated amd cracked cause the lines to suck air. I replaced the top of tank lines with metal lines and all rubber lines with barrier hose.</p><br /> <p>I also had a leak from the top of the forward tank whenever i...
www.gmcmhphotos.com
That's the way to do it! Anyone pulling their tanks out should copy what Bruce has done.
I did something similar with nylon fuel line. No more inaccessible rubber is my motto.
I did something similar with nylon fuel line. No more inaccessible rubber is my motto.
Bruce thanks for the memory! and the photos are great i have a much clearer task of what i need to doHere is a link to a photo of my fuel connection to the generator on my 77 Palm Beach. You may be able to reach it from below as it is very close to the rear driver side corner of the rear tank.
I used a piece of hardline to bring the connection down where I could service the rubber lines going forward. I believe I brought it forward for ease of access, but that was over 10 years ago.
Fuel Tank Lines
<p>I hand replaced the rubber lines in 2010, but by 2014 they had deteriorated amd cracked cause the lines to suck air. I replaced the top of tank lines with metal lines and all rubber lines with barrier hose.</p><br /> <p>I also had a leak from the top of the forward tank whenever i...www.gmcmhphotos.com
