Fresh water system

[markdx]

I have a 2007 Sierra Sport 40 foot toy hauler. I filled my fresh water tank from the filler and noticed that there was significant drip coming from the underside toward the rear of the trailer. Later when I returned, the drip had stopped and the freshwater sensor now reads two-thirds full.

Has anyone had experience with this? Any thoughts on whether, and if so, what the issue might be? Also, I have looked but not have found any diagrams of the inner systems of the trailer. Can anyone tell me how to access the entire water system of the trailer?

Any assistance would be appreciated.

Mark

[bob caldwell]

Enclosed underbelly? pull it down or cut a 3 sided access door with a box knife with the hinge at the front, and tape back into place with gorilla tape

[markdx]

Originally Posted by bob caldwell

Enclosed underbelly? pull it down or cut a 3 sided access door with a box knife with the hinge at the front, and tape back into place with gorilla tape

Thank you. It's actually dripped from an enclosed steel box area behind the axles. I will check how to pull it down.

[bob caldwell]

It has screws and metal strips down the edges.....And the underbelly isn't a structural thing, and it's a big job, so I'd make the trap door....had to replace heater duck hoses in this one

[markdx]

Originally Posted by bob caldwell

It has screws and metal strips down the edges.....

Thank you Bob, that is helpful. I appreciate it

[markdx]

I traced out the freshwater system yesterday. All the tanks, including two 50 gallon freshwater tanks are mounted on the frame below the underbelly. Steel bars hold them in place and can be unscrewed to drop the tanks.

I don't know why I thought they were steel housings but they are actually black plastic material. The rear freshwater tank has a leak at the top and left an interesting white stain.

[markdx]

[bob caldwell]

Hard water will stain like that

[bob caldwell]

You sure about having 2 freshwater tanks?

[markdx]

Any thoughts on what the water brought out to make the stain?

[bob caldwell]

Calsium
Here in Arizona it's all well water

[markdx]

Originally Posted by bob caldwell

You sure about having 2 freshwater tanks?

This picture of the rear tank shows a bottom house that goes to the front freshwater tank

And this is the other end at the front freshwater tank

They look about 50 gal a piece

[bob caldwell]

First time I've heard about 2 freshwater tanks on the forum....

[markdx]

I will do some more research, but I just can't find anything online that describes the freshwater system.

I really appreciate the conversation and assistance

[bob caldwell]

Stay tuned to your thread.....Might get more info...
The white hose would be an equilizing (?) Tube so as you fill one tank, water transfers to the second tank....I take it there's only one fill port..

[Flybob]

Does the white stain wipe off. Wondering if it was a poor attempt to reseal a leak.

[markdx]

Originally Posted by bob caldwell

Stay tuned to your thread.....Might get more info...
The white hose would be an equilizing (?) Tube so as you fill one tank, water transfers to the second tank....I take it there's only one fill port..

Yes, one fill port

[markdx]

Originally Posted by Flybob

Does the white stain wipe off. Wondering if it was a poor attempt to reseal a leak.

No it doesn't wipe off. I rubbed it with my fingers to see

[markdx]

This gives me an idea. I may try to epoxy the crack

[Flybob]

Search the forum for water tank repair. Some users have had reasonable results and others not so much.