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Discussion Starter #1
Has anyone fitted Cak water tanks or any other make? Which ones did you get and how easy is the job? Pictures and advice please?
cheers:)
 

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I have cak tanks on mine ...a large one inside the van for fresh water filled from a cap on the side of the van and an external tank that sits under the van into which my sink empties..theres a hose with a tap attached to this which sits in a c clip which can be removed and pointed towards were you want the dirty water to go or the tap can simply be turned on and emptied down a drain you've parked over......I required a much bigger water supply for the water heater I had fitted so had to use these but they are much better than the usual two plastic containers and are a lot less hassle ... I'll post some pics when I get a chance...
 

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CAK tanks are, I think, the only people in the UK who make an underslung fresh water tank specifically for the T5.

Fitting them (2 seperate tanks are linked together by a hose) is not as easy as you might think. Or what CAK may tell you.

For starters the instuctions are the very same ones you'll find in the the book, How to convert a Volkswagon T5 into a campervan, written by Lindsay Porter. Widely reviewed as an abomination of a book. It doesn't offer a step by step guide on how to do anything what so ever! It's utterly useless. I bought mine from Waterstones and took it straight back the very next day!

The instuctions, if followed to the letter, ensure that you'll put a screw into your front tank (if memory serves) on the rear right side when you repalce your chassis protection tray as their cut-out diagram is inaccurate!! Unforgivable! I reported this to them so it'll be interesting if they're still sending out the same flawed insructions.

Incidentally, in my view, the cut-outs were needed because CAK got their dimensions wrong when they designed the tanks.

The instructions have several other mistakes that are simple enough to remedy yourself.

The only other thing I should draw to your attention is the business of where to locate the filler pipe cap. I strongly advise that you position this inside the van as it'll look rank outside. There's also an outside chance of an imbecile ing into it , or filling with diesel!

In total you get 56 litres of water from the twin tanks. I have also rigged up a shower that is perfect for wild swims when you're off the beaten path.

The level indicators are a waste of time. I carry a 12 litre water tank under the bench seat in the cab so I use that to get me to the next refill point. After a while you develop a sixth sense for when it's getting low.

GOOD LUCK!
 

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Discussion Starter #4
Thanks very much for that Pencildive. Probably saved me putting a hole in my tank.
I was wondering why they classified the central tank as a waste tank, could that not be used as a fresh water one to save having the two and joining them?
I've seen one filler placed in the passenger door step, where have yo uplaced yours?
Thanks again for the help.T:
 

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I strongly advise that you position this inside the van as it'll look rank outside. There's also an outside chance of an imbecile ing into it , or filling with diesel!
on mine the cap is white and flush fitting so on my white van it doesn't stand out though on a different colour van it probably wouldn't look to clever....I also solve the problem of having someone putting fuel in it by keeeping the key seperate from the ignition key and in the van....
 

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There is another tank supplier, Autocraft at Staveley, Nr Chesterfield. They supply the same ones that Autosleepers use, made by Amber Plastics.

There are two tanks available. One that fits around the spare wheel which is waht I have used in the past and have ready for my new van. The other is a centre chassis one but I think Autocraft will have to get that in special if you want it. You are looking at their part numbers W107 & W108.

The rear one is not easy to fit but is a big tank and well out of the way of other things, it also spreads the weight to the rear wheels. It can be used as a fresh water or waste depending on what you need.

How about fitting the water filler something like this. It's my prototype, better on the next conversion I hope.

Rod
 

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Like the solution you came up with Rod_vw. Thanks for info regarding the autocraft tanks. It doesn't mention their volume on their web page!

Brian, I positioned my filler cap on the floor. Just forward of the off side wheel arch, and close to the side.

Don't know anything about waste tanks from CAK. But it may not have the same plumbing with regard to a water in pipe.
 

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We looked at external tanks but were put off by our last motorhome which had them and we were constantly having problems keeping them clean. We opted for the reimo wheeled water tank that goes inbetween the rear seat and the wheel arch. It comes out for cleaning/ filling and uses a space that was pretty awkward to utilise properly anyway.
 

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I've had my tanks for two years and clean them twice a year with a product that motorcaravan shops stock. I've not tasted any impurities or seen a discolouration in the water either. But,I've not looked inside the tanks -- that would be tricky. So its possible they've got a little ecosytem down there!

Having said all that I only use the water for washing and coffe which is boiled.
 

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I have a 30L slimline water tank fitted behind my units. The filler is hidden in the front drivers step just inside the door. It has an overflow and I have fitted a L.E.D level gauge. It sounds really good and I'm sure will look very impressive when I come to sell it but it does have some major drawbacks :-(

1. Can't use it in winter incase it freezes/have to drain it for winter
2. As it's hidden I can't check how clean it is so I can't/won't drink out of it. I know there are sterelising tablets etc but who knows what nasties will be in there after a couple if years:eek:
3. Because it's hidden if it goes wrong - as it did recently - it's a major job to get to it

I never liked conversion that used portable water tanks with "drop in" pumps as it seemed a bit of a cop out but it's definately the way to go forT: Big stored water tanks are good for campers and caravans as they have showers/toilets etc but all you really need in a van is drinking water. My dad has a Hymer but even on that its not recommended to drink the water in the tank, just use it for washing etc

Jay
 

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I must admit that we only use the water for drinking when it has been boiled. However with the van being used as regularly as ours is and that I always drain it after an outing and refill for the next I recon it is OK.

For sterilising I use Milton once or twice a year, if it's good enough for babies bottles it should be good enough for us bigger kids.

I think the Amber Plastics (Auto Sleepers) rear tank holds 57 litres and the middle one holds 68 liters. I rang Auto Sleepers about this a while ago and that's what my notes say.

By the way, access to the innards of these tanks is via a big screw cap on the bottom which you can get your arm through. It will give access to a submersible pump and/or for some cleaning.

Rod
 

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We tried quite a few products to clean the tanks and the truma boiler on our old motorhome, eventually we were recomended white wine vinegar solution with water. Left it in for a hour or so (from memory) turned the taps on and loads of froth came pouring out with all kinds of murky muck. That was the only thing that did the trick and was certainly the most entertaining. :)
 

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Hi Everyone

Ive got the underfloor mounted tanks from Autocraft mine is a 2.5 T5 LWB the rear fits no probs, but the front one has a cutout for the exhaust it fits ok, but is only about 25mm from the middle silencer and the front corner is close to the front pipe also.

I believe the volume for both is about the same so i was going to use the rear for fresh water, no heat issues and easier to locate the filler cap discretly.

So the heat shouldnt be an issue for the waste water other than melting the tank. Ive looked on Ebay and i can get some self adhesive heat shield. It only 6mm thick so should fit ok. it's made to protect bike fairing from exhausts. They must be much hotter than a diesel T5.

But How hot does the exhaust get?

will the shielding be effective?

Anyone else fittied on of these?

Did it melt?


Thanks in advance Lee
 

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I had exactly the same concerns when I fitted mine!

However I fitted it just as supplied making two straps up to fit to the existing four threaded holes in the chassis. I fitted the drain (used as grey water tank) to a tap just behind the left front wheel 'a la Autosleeper'. That is the worst part of the design as I have already clouted it but I can't see anywhere better so that's where it stays.

Maybe the tank does get hot but it's not been any problem. We've done about 9,000 miles around France this Summer so it's been tested well. I've been underneath the van recently and there are no signs of damage, discolouration or anything else.

I suggest you fit and forget.

Like you I use the rear one for fresh water.

Rod
 

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I had exactly the same concerns when I fitted mine!

However I fitted it just as supplied making two straps up to fit to the existing four threaded holes in the chassis. I fitted the drain (used as grey water tank) to a tap just behind the left front wheel 'a la Autosleeper'. That is the worst part of the design as I have already clouted it but I can't see anywhere better so that's where it stays.

Maybe the tank does get hot but it's not been any problem. We've done about 9,000 miles around France this Summer so it's been tested well. I've been underneath the van recently and there are no signs of damage, discolouration or anything else.

I suggest you fit and forget.

Like you I use the rear one for fresh water.

Rod
Cheer,s Rod

thanks for the advise, glad it all worked ok.

The front tank straps seem really easy i've got some generic fixing straps with adjusters from CAK. As you said the front one has the bolts already in place. Did it clear the handbrake Ok. I cant see it but it feels tight.

The rear one looks as if a bit of imaginative straping is require maybe triming some of the plastic chassis protection.

Have you had any issues with them vibrating loose

lee
 

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Hi Lee,

Mine is a LWB 2011 model but I don't think there are any differences in this part of the chassis area on the pre facelift.

I had no problem with the handbrake although I seem to remember it does push the cable up a bit. I made the mounting straps out of some aluminium they are wide to fit the shaping of the tank and I put come plastic tape over the edges to prevent cutting into the tank if there was any movement on the road but I believe there has been none.

I've just had a look underneath to refresh my memory and it looks as if the whole thing went up into place with no modifications to any of the under floor shields either plastic or metal. All four fixings were existing in the various chassis rails.

From new there is no vent hole in the top of the tank so I drilled a hole and fitted a small pipe fitting to allow for an air outlet as the waste runs in. I can't remember just where it is but do remember positioning it so that I could fit a small flexible hose to run higher than the tank to prevent spillage.

As above, there seems to have been no movement of the tank since it was fitted.

Rod.
 

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I fitted mine with one side wheels on the kerb and the other on the camping levelling ramps! Just as I have done most of the other building work on my last three campers.

Rod
 
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