The cylinder of my Truma Ultrastore Water Heater in my caravan has a minute leak. It is out of warranty. The leak seems to come through a pinhole at the edge of the top cover and emerges as a fine spray above the heater. I have tightened the clamp ring at the top of the heater but this does not cure the leak. I have just arrived in Spain and don't have a dealer nearby. I am looking for a solution for the next 6 weeks till I return to UK. Maybe I could caulk the hole to resist the pump pressure. I would like to know if I can remove the cover and have it welded at the pinhole but don't know about sealing the top joint to the cylinder after repair. Any advice would be welcome.
Truma Ultrastore Rapid Leak
- Thread starter Alanbrooke
- Start date
Looking at a pdf file of the heater it shows No4 as a sealing ring, could it be leaking from there rather than a pin hole ?
New water heater tanks
New water heater tanks
Save him the trouble Rita, the water tank lid is welded, the heaters lid is then clamped down over the rim of the tank with a rubber seal to prevent fumes entering the van.
The weld itself is performed by continuous resistance welding and frankly I've never known this weld to leak?! However and given that, you may then get away with 'peening' the leak area between and using a tap hammer and a bigger backing hammer to get you out of trouble
The weld itself is performed by continuous resistance welding and frankly I've never known this weld to leak?! However and given that, you may then get away with 'peening' the leak area between and using a tap hammer and a bigger backing hammer to get you out of trouble
Many thanks for your quick replies. Been spending today thinking about the problem. We just use the electric lettle for hot water in the van but the site loo block is great! I took a photo of the leak on iPad and if I blow up the photo I can see the pinhole, just where the dome of the cover starts to rise. I've been thinking the same - trying to peen the hole closed. Might try Araldite before that after a good clean at the place where the hole is. The repair has to resist the on-board water pump pressure. I found a PDF of the heater at Truma Australia. I'm not sure how thick the cover is. Only about 1mm, as far as I can see. Another solution might to drill the hole and plug with a self-tapping screw coated with Araldite. Would that be safe to do. Look forward to you advice. Alan
If you cannot back it with a hammer you will not close the hole by peining, neither do I think Aldildite is a very good method for a permanant repair. You could drill and use a self tapper but your right it's probably 0.8mm at best so the pitch of the thread will be greater,so again not I think going to last.
If not welding then, I think normal solder if you can get it to key and you can get that method right by practice away from the actual hole
If not welding then, I think normal solder if you can get it to key and you can get that method right by practice away from the actual hole
The
hole is in the front. I have a new
idea. I can clamp the tank flanges
together with a Mole wrench with spacers between the jaws. I’ll put a plastic pad coated with Araldite
against the hole and clamp it and Bingo! I hope. This should be a temporary
repair till we get home in April, when I'll get new tank. This one is only 2 years old as the heater was
replaced in January 2011 under warranty.
hole is in the front. I have a new
idea. I can clamp the tank flanges
together with a Mole wrench with spacers between the jaws. I’ll put a plastic pad coated with Araldite
against the hole and clamp it and Bingo! I hope. This should be a temporary
repair till we get home in April, when I'll get new tank. This one is only 2 years old as the heater was
replaced in January 2011 under warranty.
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