Fresh water leak

[Don_in_VA]

We are the second owners of a 2022, 22MLE. Overall, we've been happy with the trailer with only minor issues that I could track down and fix. Last fall while camping for a few days I noticed a small area of dampness on the asphalt under the trailer. Water slowly dripped through a small hole in the coroplast about 2/3-3/4 of the way back from the front of the trailer. It was our last trip for the year. This year I didn't notice any leak early on but that may have been due to the gravel or grass under the trailer not showing wetness very well. Our last trip was 3 weeks this past September and when we went to leave water was leaking out of the coroplast. There's no odor so I'm assuming (dangerous I know) that it's a fresh water leak. I took a look at the coroplast and dropping it seems like a pretty major job given that there are a lot of elements passing through the coroplast that can't be worked around. For example, the black and gray sewer pipe join outside the coroplast and I'd need to split the coroplast to get around the pipes. There are a fair number of items that pass through the coroplast and would also require splitting it. There's also a lot of heavy rubber-like caulk sealing all the openings and I'm not sure what I'd use to reseal the unit.

Originally I'd hoped to drop the coroplast in one piece, find and fix the leak and reinstall the coroplast. This doesn't look possible...am I missing something that makes it possible? I've also thought about cutting a central section out of the coroplast to make the repair (hoping I cut in the right area) and making the section removable for future repairs, which given the non-standard plumbing and fittings seems likely to occur.

I'm interested in learning how to get to the underbelly of the beast in a rational manner to make the repair. I recognize there's a lot of experience and wisdom here and I'm seeking your advice. TIA

 

[NB Canada]

It isn’t a big deal to cut it and then tape it shut

The best way to test for a leak is too put water in your fresh tank and start your pump up. Once it pressurized it will stop. If it starts up again you know there is a leak
It may take awhile so maybe watch some tv or read a book in the camper and see if the pump engages
If it does the next step is to locate the leak

 

[lineman1234]

My fault for not using a psi control thing on the city connection one day. To much psi caused damage to my pump, and i didnt know till it would slowly backfill past the one way valve and fill and over fill the tank. I tried taking the pump apart multiple times but ended up cutting in a shut off valve so it wouldnt backfill the tank. Pump worked fine but i couldnt get it to stop the backfill part. The pump cycled very little when used on the fresh tank but not bad. I didnt dry camp much so it was fine for my use.

 

[Chaps2018]

Leak: Recent experience with these symptoms. (Ie, liquid coming out of the underbelly—no smell). Mine ended up being connections to the kitchen faucet leaking through the hole in the floor where the plumbing goes into the underbelly. Wrap towel ppr around the pipes under the sink/bath vanity so you can quickly tell if they are leaking.

Underbelly Access: Based on your description, it sounds like you have a single underbelly panel. That is very difficult to manage. You can cut a 3 sided square (forth side being the flap that faces the front of the trailer (careful not to use a long blade that may cut wires). You can then stick your head and a flashlight up into the underbelly to see where to cut the next access hole in the panel.

Alternately, you can divide your single panel into 4’ sections: Our trailer’s panel is cut into 4’ sections with the forward panels overlapping the next panel. These are layered from front to back. They use a 1”x3”x8’? (supported by the I beam on both sides) that supports leading/trailing edges and provides a place to screw/secure the panel’s edge.

 

[LanerC]

Probably not, but if you have driven through any type of moisture or wet roads, it can take a while for the water from above the chloroplast, kicked up by the tires, to slowly drain out through any little hole in the chloroplast. I have drilled a couple of small holes in the low spots of the chloroplast to aid in draining after driving on wet roads. Happy Camping!