https://www.ozervnews.com

The trouble is, it's probably a poly-ethelene or poly-propy-ethelene(?) tank and glues just won't adhere permanently to it.

Although, Selleys have released a glue claiming it will.
https://www.bunnings.com.au/selleys-3ml ... e_p0212331? But, not sure how it would handle the diesel.



You might be better off making a new gasket. Something like this might be effective. I used this to make a new gasket for the fuel tank sender.
https://www.ebay.com.au/itm/156231435785?

BruceS wrote: ↑Mon Feb 17, 2025 2:31 pm Bernie does that tank have a pickup tube inside the tank?
It's hard to see it. Looks like a new tank doesn't have an outlet until you drill & install it?
I'm guessing you can't rotate a new one & put it back in as the fill place won't be where you want it?

Yes Bruce pickup pipe in tank.
If you enlarge the pic you can see the holes..
For a better word...on that tank they are in view.but on the new tank those holes indent... thingys are on the other side the mounting holes are the same..if that makes any sense
Thanks Keith.

It miss' out by 2 inches to fit in the side bin next to it ... luck not on my side today...

Ah yes, who put the pick up on there? It goes in the bottom of the tank, two places available depending on orientation of the tank. The outlet is just a short alloy spigot, big alloy piece goes inside the tank with an "O" ring on it, threaded piece goes through the drill hole, another "O" ring and the nut locks it all in place ..... that is what the reference about the length of wire is all about, to get it lined up and into the hole .....

T1 Terry

I'm coming from the top...not the side as the old one and not from the bottom as you said Terry...to exposed to the road and what can come and hit it...I'm using the pipe that came with the new tank... and it's not designed to be from the bottom.h

BernieQ2 wrote: ↑Mon Feb 17, 2025 5:55 pm I'm coming from the top...not the side as the old one and not from the bottom as you said Terry...to exposed to the road and what can come and hit it...I'm using the pipe that came with the new tank... and it's not designed to be from the bottom.h

The pipe that comes with the kit is for installing the pick up in the vehicle fuel tank, not in the plastic 10 ltr tank.
Maybe you could drill a hole through a bolt that the pipe will fit through, solder the pipe into the bolt so the long end comes out at the bolt head and the short end at the threaded part.
Drill a hole in the top of the tank the size of the bolt, thread thin wire through the hole and back out the neck. Thread the wire through to thread end of the pipe till it comes out the other end, this is so you can get it back out if you need to before you have sealed it up. Addan "O" ring on the thread under the bolt head and feed it into the tank, using the wire to pull the pipe into place. Once you have the pipe length cut so the pipe is off the bottom of the tank when the bolt pulls up against the inside "O" ring, add another "O" ring on the outside and secure the nut so it doesn't crush the "O" ring till it pops out .... a larger drill bit to counter sink the nut so the "O" ring has somewhere to fit into might make a better seal.
you can either leave the wire inside the pipe and use it as a cleaner, or just pull it back out, up to you.

There is also the option of fitting the alloy metal assembly in from the side mounting position and adding a piece of pipe angled down to the bottom of the tank soldered into the alloy fitting ....

T1 Terry

My theory is it won't leak from the top...as it did from the side... and I know what the pipe is for, but I'm going down from the top.
There is a finger knuckle of distance between the heater tank and the main tank , so it will be easier to do it my way.

Fair enough, good luck with it. I doubt I'll fit one to this motorhome, I'll just use the reverse cycle air conditioner.
It would be different if this was a diesel, the heaters are as cheap as chips and no dramas filling from the main tank via pump when needed. The LPG equivalent is mind numbingly expensive in comparison and having to fill from three different pumps is just not part of any service station trip while towing a trailer on such an over all long rig, I'd ever look forward to attempting ...... and the sun is a cheap fuel source

T1 Terry

A diesel heater doesn't freeze up or loose its efficiency on a really cold night.

jon_d wrote: ↑Mon Feb 17, 2025 8:41 pm A diesel heater doesn't freeze up or loose its efficiency on a really cold night.

Yeah, there is that, but if you chose one that uses R600 (propane) as the refrigerant, it has to get real cold for the efficiency to drop to the levels those running on R134a do ..... the freezing up could be an issue though .....
Maybe I could reverse engineer a diesel air heater to use LPG as the fuel for the furnace heater rather than diesel .... probably be quieter and no smell or smoke issues Those diesel heaters smoke big time when it gets real cold and they aren't running on winter fuel ......

T1 Terry