2020 TAB400 Water Leak

anba · September 2022

I noticed a wet spot next to the tire on the "passenger" side of the TAB. First I thought it to be condensation, but then figured that the dripping only occurs when we used the kitchen sink and drained it. The image shows the dripping location looking towards the back of the TAB under the sink. Inside the TAB under the sink everything is dry.

So, it seems to come from the sink drainage, but I have no idea how to access any of that to check it out. I guess I have to bring it in for service, but wanted to see if anybody here had a similar problem and so that I have better understanding of what the problem might be.

Thanks

Image: https://us.v-cdn.net/5021717/uploads/editor/hd/4bf2d7md3yv7.jpg

Oinfront · September 2022

@anba I just made a post about my repair for an issue like this. Take a look it may help.

https://tab-rv.vanillacommunity.com/discussion/16272/seriously-another-broken-grey-tank-drain#latest

anba · September 2022

@oinfront Thanks a lot. The only difference in terms of the location of the dripping is, that ours dripped at the tire under the kitchen sink, but that might be because the trailer was leaning a bit to that side. Looks like a pretty involved fix but very good documented from you. Now I have to decide whether I want to take that on by myself.

Oinfront · September 2022

Yes when I read your post it was probably a different lean with the camper. If it happens when you use the kitchen since Im 99% sure it is as same as mine. If you can take off the large square panel with the 4 screws in each corner on bottom shelf, you can have access to the pipe. I shook the pipe with my hand and I could tell that it wasn't attached to the grey tank. That's how I knew for sure.

anba · September 2022

I checked out the cabinet and it seems not too complicated to get off the bottom shelf. I'll try, just to see if the pipe is the problem. Then I go from there.

Oinfront · September 2022

Sounds good. Def update Im curious

anba · September 2022

So, I checked it out and it looks firmly attached and everything was bone dry.

I did some more test in my driveway and ran water in the kitchen sink and the bathroom sink as well - not single drop of water under the TAB or anywhere else. Of course, the TAB does not stand as slanted as in the campground, but still. So, I don't know what to think about this. On the one hand I'm glad that the pipe is not broken but then again I still have the question where the water came from in the campground.

Any ideas where else to look or to check?

Thanks

BTW: Could NuCamp possibly use any more different size screw heads?

Image: https://us.v-cdn.net/5021717/uploads/editor/i5/2dxv0e8su79v.jpg

Denny16 · September 2022

The screw heads are based on the screw size, and when a larger diameter screw size is used, the head size changes also.

Cheers

Oinfront · September 2022

@anba Interesting. Good and Bad I guess. Good that you have no leak there and Bad cause now you gotta figure where that water is coming from! Please update when/if you do!

2020 TAB400 Water Leak

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