Burstner Owners

Apr 25, 2016
261
470
Soham, Cambs
Funster No
42,710
MH
PVC
Exp
A newcommer
the fresh water tank in our Burstner, has a very small leak around the large red inspection cap, which is on the side of the water tank.
There is a foam washer/seal that doesn't seem to want to seal it. It releases a small bead of water which can then drop down onto the van floor.
Have taken the red cap off and re-seated the foam seal and replaced several times, but with no joy. The dealer did put a new seal in, which did work initially, but then after a couple of days, the inevitable drip re-appeared.
Firstly, is there a better type of seal to use rather than a foam one? If so has anyone tried one?
Where can I get spare seals from. Looked on the South Downs on-line shop site, but don't see one listed.
This is not a major problem, but just one of those simple but annoying issues that just can drive you round the bend!
Anyone else experienced the same problem?
 

GJH

LIFE MEMBER
Aug 20, 2007
28,486
36,191
Acklam, Teesside, originally Glossop
Funster No
127
MH
Burstner t625 Harmony
Exp
Since 2006
Our tank (2003 t625 Harmony) has the inspection cap on the top so less chance of a problem for a start I suppose. I've just checked and it is a male cap (screws into, rather than onto, the tank) with a rubber seal. I'm surprised yours isn't a rubber seal.
Camper UK list a couple of seals Here.
 
Sep 24, 2013
815
270
Norwich
Funster No
28,255
MH
Low Profile Coachbuilt
Exp
Since 2014
Nigel, we have the same problem with a similar model Burstner. It will have the same tank as yours. We have the same leak and put a rolled up microfibre cloth underneath the tank. We have just had the seal replaced but think it still leaks a little. Have a look at the seating surfaces on the red "plug" and also the tank. I haven't fully resolved the problem yet as I hoped a new seal would sort it but seems it doesn't. I often travel with the tank level below this point. The majority of the tank capacity is below this point anyway (notice how long it takes to fill the first few inches, then no time at all for the last 8 to 10 inches).

As a point of interest have you used you grill for any length of time? we had no end of trouble keeping it lit for longer than 5 minutes!
 
OP
Nigel L
Apr 25, 2016
261
470
Soham, Cambs
Funster No
42,710
MH
PVC
Exp
A newcommer
Thanks GJH, that looks exactly like the one fitted in ours. Yes, ours is a foam seal, and I think what is happening is that as you tighten the cap, the foam twists and so dosen't form a tight seal. I think that a rubber one would be much better and durable. Will order one and give it a try.
As you can see, a good old bit of trusty gaffer tape positioned to divert any drips to outside the van, as opposed to dropping into the floor area:)
image.jpeg
 
OP
Nigel L
Apr 25, 2016
261
470
Soham, Cambs
Funster No
42,710
MH
PVC
Exp
A newcommer
Nigel, we have the same problem with a similar model Burstner. It will have the same tank as yours. We have the same leak and put a rolled up microfibre cloth underneath the tank. We have just had the seal replaced but think it still leaks a little. Have a look at the seating surfaces on the red "plug" and also the tank. I haven't fully resolved the problem yet as I hoped a new seal would sort it but seems it doesn't. I often travel with the tank level below this point. The majority of the tank capacity is below this point anyway (notice how long it takes to fill the first few inches, then no time at all for the last 8 to 10 inches).

As a point of interest have you used you grill for any length of time? we had no end of trouble keeping it lit for longer than 5 minutes!
SteveC, oh yes, the grill bar fell off ours when we picked the new van up from the dealers. They took another oven out a another new van and put in ours to get us on our way, and guess what, that one didn't work either!!
We are now awaiting a new oven from Dometic. Have to say the dealers have been really helpful over it. (Heart of England).
Looks like there is an issue with the ovens.
 
Sep 24, 2013
815
270
Norwich
Funster No
28,255
MH
Low Profile Coachbuilt
Exp
Since 2014
Dometic know about the problem. We had a Dometic engineer out to look at ours and he said they have issued a fix which is just a bodge really. Our burner bar eventually fell out recently too. Sorted by Southdowns on our recent trip down there. Been back a day and now a spring in the toilet door handle has broken so the door doesn't close! The workshop at Southdowns have been really helpful too.

Nigel, I think you may be trapping the water inside the door seal unless there is a gap in the bottom of the seal rubber to let it out.
 

funflair

LIFE MEMBER
Dec 11, 2013
11,862
11,437
Guisborough
Funster No
29,351
MH
N&B Flair 8000 IVECO
Exp
since 2012
Thanks GJH, that looks exactly like the one fitted in ours. Yes, ours is a foam seal, and I think what is happening is that as you tighten the cap, the foam twists and so dosen't form a tight seal. I think that a rubber one would be much better and durable. Will order one and give it a try.
As you can see, a good old bit of trusty gaffer tape positioned to divert any drips to outside the van, as opposed to dropping into the floor area:)
View attachment 121173
Could try a bit of Vaseline on the seal.

Martin
 

Mamma J

Free Member
Aug 20, 2019
5
0
Funster No
63,416
MH
Burstner lysoe 744
Exp
2019
I know this is an old thread but we have the same problem. A small drop from the red cap. Did you resolve the situation. If so can I have the info. Many thanks
 
Feb 21, 2018
970
594
Funster No
52,506
Go to the plumbers merchant and get a tube of fernox lsx leak sealer a type of liquid non setting silicone in a tube. Guaranteed fix and the cap will still undo
Exactly what I was going to say and yes I have sealed a few of these water tank inspection hatches with LSX myself in the past .
Always keep a tube in the van as well 👍
 
Apr 13, 2012
5
1
Bedford
Funster No
20,536
MH
PVC
Exp
Since 1986
I have the same problem and even tried using a rubber seal instead of the foam one but the damn thing still leaked. Pardon the ignorance in how to use the LSX product, can I assume you just smear the gasket in it before screwing the red cap in place or are you replacing the gasket with the LSX?
 
Feb 21, 2018
970
594
Funster No
52,506
I have the same problem and even tried using a rubber seal instead of the foam one but the damn thing still leaked. Pardon the ignorance in how to use the LSX product, can I assume you just smear the gasket in it before screwing the red cap in place or are you replacing the gasket with the LSX?
Hi yes LSX is a silicone sealer so you leave the rubber gasket or O ring in place and just apply a nice bead on to the gasket and possibly some on the cap before putting the gasket on .
Screw down reasonably tight and it’s done .
Certainly works for me .
 
Sep 24, 2013
815
270
Norwich
Funster No
28,255
MH
Low Profile Coachbuilt
Exp
Since 2014
As one of the original contributors to this post our seal seems to be holding. However I still have a piece of gaffer tape under the seal to divert any water as well as a cloth at the bottom of the tank. Belt and braces!
 
Feb 21, 2018
970
594
Funster No
52,506
As one of the original contributors to this post our seal seems to be holding. However I still have a piece of gaffer tape under the seal to divert any water as well as a cloth at the bottom of the tank. Belt and braces!
I have had several different vans where the inspection cap has leaked when the tank is completely full ⚠👎😥
Amazingly many owners on a different group say they never fill up with water completely, as we mainly camp away from sites that would render our van totally unusable.
People are funny 🥴⚠
 
Jun 30, 2013
4,815
7,099
Cotes d'armor, France
Funster No
26,730
MH
Burstner Harmony TI 736 G
Exp
Since 1987
We have the same red cap on the side of the tank but ours came with a rubber seal. I have undone the cap a couple of times to clean the tank ( though it was never dirty inside) and it has resealed perfectly.
We always travel with a full tank even if we decide to stop on a campsite ( which we only ever do in the U.K. ) and there have been no leaks.
 
Feb 21, 2018
970
594
Funster No
52,506
We have the same red cap on the side of the tank but ours came with a rubber seal. I have undone the cap a couple of times to clean the tank ( though it was never dirty inside) and it has resealed perfectly.
We always travel with a full tank even if we decide to stop on a campsite ( which we only ever do in the U.K. ) and there have been no leaks.
There’s always one 🥴😂
 
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