Fresh water leak how to diagnose?

[Jane And Rog]

Denby has started leaking fresh water. I’m pretty sure it’s a leak from the tank - water constantly is dripping out of the back of the van some behind the wheel arch, some from the bottom of the bumper.

My only guess so far is the dump valve not sealing correctly. I’ve added some silicon grease but it hasn’t made a difference.I must admit though it’s very awkward to get to.

The leak must be pretty low as it’s still dripping when the tank is more or less empty.

Any ideas on how to find this leak and, how to fix it on the road?

Adria Twin SGX 2019 btw. Tank is mounted over the rear offside wheel arch.

 

[dazandandrea]

Unless you can actually see the leek its going to be very hard .
Can you remove the tank?

 

[Jane And Rog]

certainly not whilst it’s raining - I’d need to empty the hold - and even then not easily.

 

[Langtoftlad]

Is it bad enough to adversely affect your current trip...?
Can you live with it until you get home

 

[Jane And Rog]

Is it bad enough to adversely affect your current trip...?

Probably : 100l tank drains completely in 24h or so. We could probably manage by being on a site every day.

^{_{Subscribers  do not see these advertisements}}

 

[Peavy]

Sorry to read that.
We have a Twin like yours (2022).
We had a water leak also, it was dripping, constantly, but not a lot.
We took it to the dealer and they repaired it under warranty.
I'm not sure what they did to fix it, but you can see in the pictures, they worked around the two drains.
Bellow you'll find a picture before and after the fix, in case it helps to locate the leaking.
In our vans we have two possible drains to drop the fresh water.

You can see from the last picture, the repair was done around the two drains.
Here's a picture from inside the tank of those two drains (the white lever that you manipulate from the bottom and the metal rod which you can manipulate from above the tank).

Empty the whole tank and try to see if any dirt is catch in the lock seating in the bottom of the tank.
Best of luck

 

[dazandandrea]

Just a thought. If you cant fix the leek could you use a heavy duty bin liner inside the tank. Assuming you can access the inside of the tank. Just a thought.

 

[lorger]

Is the pump coming on in small spurts, we had a leak and every now and then the pump would start to keep the pressure up. To get round it while away we just kept the pump off until needed, the issue was the boiler safety valve. I stripped it down and found some grit on the rubber so a quick clean and all ok, it was also an Adria