Hymer Dynamic Line Water Ingress Issues

You keep saying Chipboard, in a Hymer!
Got to put you right it's lightweight ply, I know I've drilled big holes in it.:rofl:

I'm hoping in your case it is just a factory cock up and the wheel arch has not been sealed properly when fitted.

I'm not impressed with the lightweight construction that all the manufacturers are using now, time will tell how well the vans last.
 
In my defence Lenny it’s white and white edged just like chipboard and when it absorbs water it distorts the same. Sorry can’t insert emojis never been able to on Fun don’t know why. ;0)
And I have corrected my post. Now decided to rain steadily and it’s starting to enter the underfloor space. We were leaving to make a leisurely journey for our ferry but this has delayed me a couple of days.
 
Would be interested to know how easy the wheel arch trim is to remove as I may have a look behind ours, even though it’s not the same model or year. Worth checking.
 
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Although a warranty subject and after contacting and agreeing with dealer with intentions to avoid warranty issues , to prevent further ingress until you get to dealer , apply a very thin bead of clear silicone around arch which could be pulled out later.
 
Now of concern to me is the other side wheel arch also leaking. There is no access in base of that side underbed wardrobe to check for ingress and gas locker backs onto it, so any water can escape unnoticed through gas drop at forward end of locker which is next to said wardrobe.

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Larrynwin said:
Although a warranty subject and after contacting and agreeing with dealer with intentions to avoid warranty issues , to prevent further ingress until you get to dealer , apply a very thin bead of clear silicone around arch which could be pulled out later.
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Hi Larry don’t have access nor do I wish to go and purchase a gun and sealer so will just use gaffer tape to hinder ingress. I suspect that when travelling in the wet the spray up into the wheel arch will possibly be an issue as well.
 
I thought it was coming from the wheel arch and said so early on in the thread... not sure if you saw it though. :)
 
So glad that you’ve managed to identify the problem @Stewart J . Hopefully a quick and easy fix for the dealer. With any luck they’ll be amenable to doing both sides under warranty - when I had my issue they did actually do both sides, despite me not having an issue on the drivers side.

Gaffer tape on the outside and a rolled up towel on the inside would seem to be a good temporary fix...
 
We are slightly lucky if anything happens on our 678 as one arch is in wardrobe and accessed under tray and other is in opposite wardrobe but would need to remove some panelling.
Good luck with yours and thanks for raising the issue for us to keep an eye on.(y)(y)
Alan
 
Stewart J said:
In my defence Lenny it’s white and white edged just like chipboard and when it absorbs water it distorts the same. Sorry can’t insert emojis never been able to on Fun don’t know why. ;0)
And I have corrected my post. Now decided to rain steadily and it’s starting to enter the underfloor space. We were leaving to make a leisurely journey for our ferry but this has delayed me a couple of days.
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You should have the "smiley" next to the landscape looking "image" button,

42B4B029-0BF0-4F9E-A6AC-5AAE39839342.jpeg


just click smilies and then select(y)

Martin

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peterc10 said:
Hmmmmmmm ...... I have a 2015 B678 and am going to have a test on it to make sure I do not suffer from this.
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Well I have had a look as best I can on my B678 and there does not seem to be a problem with it. No signs of damp on either side. Our wheel trims appear not to be sealed at all against the wall, and there seems to be a deliberate gap formed with spacers. Water runs straight through and out onto the wheel. But I will keep an eye out when it rains.
 
peterc10 said:
Our wheel trims appear not to be sealed at all against the wall, and there seems to be a deliberate gap formed with spacers. Water runs straight through and out onto the whee
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They were all like that the DL was the first one to have the additional seals the new Exsis and other models have it now. The seal is to stop the wheel arch chafing on the body nothing to do with keeping water out.
 
Just been and had another look at ours. April 2017 build. The difference between ours and yours seems to be that we have a greater amount of ‘black gunge” smeared around the wheel arch cover. I have no technical knowledge, but I’m guessing that the purpose of this gunge, may be to keep the water out?

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bellabee said:
Just been and had another look at ours. April 2017 build. The difference between ours and yours seems to be that we have a greater amount of ‘black gunge” smeared around the wheel arch cover. I have no technical knowledge, but I’m guessing that the purpose of this gunge, may be to keep the water out?
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Thanks bellabee, I’m guessing wheel arch covers are fitted on initial build up before the upper floor and furniture is fitted and I hope they don’t have to remove and reseal them that would be a full stripdown not something I would be at all happy with.
 
Stewart J said:
Thanks bellabee, I’m guessing wheel arch covers are fitted on initial build up before the upper floor and furniture is fitted and I hope they don’t have to remove and reseal them that would be a full stripdown not something I would be at all happy with.
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If you Broken Link Removed here, you will see photos of the phases that it goes through in production. You used to be able to click on the photos to bring up a large version, but that does not seem to work anymore. The wheel arch liners go on first along with the floor and before everything else is added.

I suspect they will try to seal it from the outside to start with. If not it will be a difficult job to access from inside.

Edit, the photos are for the 2015 model year I think. Some of them show a B678 which is identical to mine (except LHD).
 
bellabee said:
Just been and had another look at ours. April 2017 build. The difference between ours and yours seems to be that we have a greater amount of ‘black gunge” smeared around the wheel arch cover. I have no technical knowledge, but I’m guessing that the purpose of this gunge, may be to keep the water out?
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Ours are the same only the sealant has been applied a little neater than yours! They must be getting better at it?:whistle::whistle:
 
Another member with a 588 early 2017 registered has just carried out the watering can test and reports “water is getting in easily in substantial quantities”
 
Stewart J said:
Another member with a 588 early 2017 registered has just carried out the watering can test and reports “water is getting in easily in substantial quantities”
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You would think that Hymer should do a recall to check them out?

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Speve said:
You would think that Hymer should do a recall to check them out?
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We will never know how many vans are affected that’s for sure Alan, Hymer tend to be very coy in that respect, premier quality and all that, not the sort of news they want out there. I do hope it’s going to be a reasonably easy fix, if it’s a major stripdown how many if any U.K. dealers have the facilities and expertise to carry it out.
 
Interesting comment about dealers ability to cope with a big strip down..

We were at Adventure in Tebay last year looking around their workshop and they had an Airstream in for repairs following a water leak. (Adventure were formerly the importers of Airstreams into the U.K.)

The problem had occurred as there was a split in the internal water tank which had damaged various internal fittings.

They had taken the caravan back to a bare shell, just about anything that was inside had been removed. Their next job was to put it back together again with new parts as necessary.

I don’t know how the job turned out, but it does seem that there are some dealers out there who aren’t afraid of tackling major jobs under warranty - as Adventure are now Hymer dealers they may be worth contacting if your supplying dealer isn’t helpful.
 
It'd definitely be Bad Waldee for us, if we'd bought in the UK.
 
Will await reply from Hymer via our dealer, maybe a trip to Germany will be necessary, I hope not we already have plans for sunnier climes in the New Year. :)

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Looks like there is plenty of sealant around the wheel arch liner on Stewart's van but we can't see how good it is around the joint to the outer wall.
I'm wondering if it could a hairline crack in the wheel arch liner either a faulty batch or cracked when fitting.
The seal on the outside between the body and wheel arch trim is just cosmetic, older Hymers never had it.
 
milliethehymer said:
Interesting comment about dealers ability to cope with a big strip down..
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Our local Hymer dealer is having issues in determining how to fit and connect a solar unit to a Hymer pop-top.

I think a large strip-down would be a tad too much for them in all honesty :D
 
Lenny HB said:
Looks like there is plenty of sealant around the wheel arch liner on Stewart's van but we can't see how good it is around the joint to the outer wall.
I'm wondering if it could a hairline crack in the wheel arch liner either a faulty batch or cracked when fitting.
The seal on the outside between the body and wheel arch trim is just cosmetic, older Hymers never had it.
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Not a hairline crack Lenny a goodly sized hole or split somewhere it really pees in, I also wonder if it’s failed on the joint to outer wall.
 
The wheel arches liners are on the chassis before the walls go on so I guess that is where the problem is so they will just take off the decorative wheel arches off and squirt a bit of sealant and in and job done.

Martin
 
funflair said:
The wheel arches liners are on the chassis before the walls go on so I guess that is where the problem is so they will just take off the decorative wheel arches off and squirt a bit of sealant and in and job done.

Martin
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They are my thoughts too Martin, I wouldn't have thought it would be a big job for them to do. There is maybe a gap to the floor which will be evident when the wheel arch liner comes off, I am sure it will be an easy fix for them.
The hardest bit will be replacing the damaged marine ply.

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