I am pretty set on this and hoping to get some info. I have found a site and picked out a size I need.They come preset with all the fittings needed. Going from a 30 gal to a 52 gal. My tank sits under my bed and is easily accessible.All I have to do is remove a few cross members and fittings and mounting hardware to get it out. my question is, can I use to old tank fill gauge and transfer it to the new unit or do I have to go aftermarket? I cans see it till I take the tank out but I believe it may be one of those strips that runs up the side. Would appreciate and feedback on this. No worries of weight or balance as I would rarely travel with the tank full. I will also be install new one so it it centered more left to right as the original is mostly under one side of the bed. Plenty of room there to work with.

The hose from the fill spot to the tank... If you have the type of hose with ridges, it can be a hassle to get a water tight connection. Not a matter of strength with the hose clamp but angle of hose to the connection at the tank. The wiring...Be sure you know which wire goes at what level. So when you re-install the probes the sensors are at right level so you get correct reading on water level.Don't toss old tank... might come in handy in back of pick up for longer boondocking trips?

If you're dead set on this, fine, but it's easier to find ways to port water to the trailer.

Too bad you can't figure out a way to install the new one and keep the old one. Any way you could install it under the frame and then install a cross-over from one tank to the other? With the cross over, the original sensors on the original tank would still read as it always had, it would just be a lot more water? You would need to vent the new tank, and of course have a drain. But both tanks could be filled from the original fill location. The cross over would fill the second tank. (It's just an idea if you haven't thought of this yet. But, I don't know the configuration of your camper either.)Good luck!

After you fill the new tank, if you notice that it is sagging, you can put in a cross brace underneath it to help support it. I had to do this on my original tank -- the sag meant that I was dragging around ten gallons of extra water that I could not use because the pickup tube for the pump was above the low point of the tank.Good luck with this project -- let us know how it goes!

Thanks for the replies. tank is necessary as I am sick of filling up the portable 6 gal tank and pouring into trailer. I dont have to worry about sag as it sits on the floor under the bed and I can use all the factory hoses and drains. I am experienced in wiring so i will pay attention the sensors. Should be pretty straight forward. just was worried about how the sensor works.

Thinking of putting in larger fresh water tank | Good Sam Community

35 Replies

ZeeLet50
Explorer
Jan 16, 2016
Thanks for the replies. tank is necessary as I am sick of filling up the portable 6 gal tank and pouring into trailer. I dont have to worry about sag as it sits on the floor under the bed and I can use all the factory hoses and drains. I am experienced in wiring so i will pay attention the sensors. Should be pretty straight forward. just was worried about how the sensor works.
profdant139
Explorer III
Jan 16, 2016
After you fill the new tank, if you notice that it is sagging, you can put in a cross brace underneath it to help support it. I had to do this on my original tank -- the sag meant that I was dragging around ten gallons of extra water that I could not use because the pickup tube for the pump was above the low point of the tank.

Good luck with this project -- let us know how it goes!
DutchmenSport
Explorer
Jan 16, 2016
Too bad you can't figure out a way to install the new one and keep the old one. Any way you could install it under the frame and then install a cross-over from one tank to the other? With the cross over, the original sensors on the original tank would still read as it always had, it would just be a lot more water?

You would need to vent the new tank, and of course have a drain. But both tanks could be filled from the original fill location. The cross over would fill the second tank. (It's just an idea if you haven't thought of this yet. But, I don't know the configuration of your camper either.)

Good luck!
2oldman
Explorer II
Jan 16, 2016
If you're dead set on this, fine, but it's easier to find ways to port water to the trailer.
path1
Explorer
Jan 16, 2016
The hose from the fill spot to the tank... If you have the type of hose with ridges, it can be a hassle to get a water tight connection. Not a matter of strength with the hose clamp but angle of hose to the connection at the tank.

The wiring...Be sure you know which wire goes at what level. So when you re-install the probes the sensors are at right level so you get correct reading on water level.

Don't toss old tank... might come in handy in back of pick up for longer boondocking trips?

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Thinking of putting in larger fresh water tank

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