fresh Water tank leak

tonker

Does anyone else have a problem with water coming out of the top of the lid from the freshwater tank when they are driving along?

I have sealed the lid and also bought a replacement but still the same.

I don't fill it to the top as it is. 

Can anyone recommend a solution? 

Thanks in advance

 

Moderator Edit:

Can you please clarify if your post relates to a motorhome or caravan in order that I can move it to a more appropriate section.

Many Thanks.

eribaMotters

Over 16 years I've had fixed 35 to 50L water tanks in my last 4 my caravans. I never tow with water in the tank. Best practice is you should empty it. Yes they may have a strap over them and are probably glued down, but that weight of water moving around is going to cause problems. They should also have a vent hole in the top so water will get out.

 

Colin

tonker

As a motorhomer though, you need to carry water on board on case you want to stop off and wild camp.

fair point about the weight causing a problem.

 

Tinwheeler

Tonker, your profile shows you as a caravanner.

If you have a motorhome, your tank will likely be underslung. If that is the case, how would you know water leaks from the top?

Perhaps you will clarify.

SteveL

Although underslung, the top of ours is accessed by a hatch in the step by the bed. This enables the submersible pump to be changed if required and the tank to be cleaned (if needed) through the larger hole. We only ever travel with the recommended 20 litres so have no issues. However, if the tank is overfilled when arriving on site,  so as to vent through the overflow, do get water seeping around the side of the large blue access hole. They clearly don’t seal very well.

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Tinwheeler

Interesting, Steve. I’m on my 6th MH and none have had an accessible tank like yours.

We wait to hear from the OP……

Edit: And BB too. Perhaps it’s something found on continental vans, although mine too is an ‘overthere’ model🤷🏻‍♂️

tonker

My profile is as a caravanner but have bought a Ford Herald motorhome to see how we get on now children have grown up.

The tank is as shown in the picture from SteveL and the water heater is next to the cap.

The tank is therefore accessible and water obviously sloshes around when driving and causes the water to come out of one of the access points at the top.

 

Tinwheeler

Thanks for explaining. I’m sure you can see why the confusion arose.

Sorry, I can’t suggest a cure.

 

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LLM

None of the fitting shown in the picture should leak, although it is not unknown for water to escape from around the inspection cap if it is not secured.  In that regard it does need to be very tight.  Attempting to tighten it by hand is rarely enough.

tonker

The Herald, bless it, is  a V reg, 

Very powerful with a 2.5 TD engine.

 

I will look at the seal on the cap and the top of the tank, and I guess a new washer first.

 

Thanks for help so far.

DavidKlyne

Tonker

I have an onboard water tank in my motorhome. If I over fill the tank, say 100% plus, I do get some water leaking. If I fill to 95% no problem at all which I find perplexing. Its not coming out of the tank top seal as I always have a towel over it and it never gets wet! Is there evidence of water coming out of the top of the tank, i.e. wet around the seal? Short of removing the tank and sort of bench testing it I have not been able to find an answer so am now very cautious about over filling. 

David

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