Hi All
I’m converting my recently acquired LWB T6 to a camper and am currently spending a lot of time underneath it, wondering how so many tools can possibly end up so far out of reach…
Next job is to connect to the diesel supply, ready for the Truma D4E heater, and I seem to have discovered the perfect connection location: just behind the tank. Only trouble is, I’m not aware of anyone else having done it this way. Is that because I’ve overlooked an obvious/ major drawback?
I don’t think I need to drop the tank because I’ve recently discovered a Webasto heater lurking under the floor (had no idea!), so I can connect to its feed pipe, I believe.
A second surprise led me to propose my favoured location: What appears to be the Webasto diesel pipe exits from above the rear of the tank and projects 100mm rearward. At this point it seems to realise its mistake and makes a dramatic U turn, heading back over the top of the tank. If my T6 manual is correct it ultimately connects to the Webasto metering pump, next to the Webasto and just in front of the diesel and AdBlue tanks.
Is there any reason I shouldn’t just cut a section out of this rigid nylon (HIPH PA6) pipe where it projects beyond the tank, slip some 4.5/ 5.0 internal diameter rubber hose over it and insert a suitable T piece?
There’s plenty of space nearby to mount the metering pump at the correct angle and, from there, it’d only be 1m across the van to where I’d take the pipe through the floor to the Truma. Conveniently, this entry point would be a little way short of the heat from the exhaust pipe. Couldn’t ask for more!
Please see location picture below.
I’m also including a picture of the location that I think is more commonly used, adjacent to the Webasto. This has the advantage of having a short piece of existing rubber hose to plumb into and it even has a spare mounting point for the metering pump (right next to the Webasto one). BUT it’s also really tight for space in that area and, also, connecting there and running back down the van to the Truma would involve three times as much pipework.
Any views on my proposal very much appreciated!
Also, if you don’t might reading on (sorry for pushing my luck...), I have 3 related questions:





I’m converting my recently acquired LWB T6 to a camper and am currently spending a lot of time underneath it, wondering how so many tools can possibly end up so far out of reach…
Next job is to connect to the diesel supply, ready for the Truma D4E heater, and I seem to have discovered the perfect connection location: just behind the tank. Only trouble is, I’m not aware of anyone else having done it this way. Is that because I’ve overlooked an obvious/ major drawback?
I don’t think I need to drop the tank because I’ve recently discovered a Webasto heater lurking under the floor (had no idea!), so I can connect to its feed pipe, I believe.
A second surprise led me to propose my favoured location: What appears to be the Webasto diesel pipe exits from above the rear of the tank and projects 100mm rearward. At this point it seems to realise its mistake and makes a dramatic U turn, heading back over the top of the tank. If my T6 manual is correct it ultimately connects to the Webasto metering pump, next to the Webasto and just in front of the diesel and AdBlue tanks.
Is there any reason I shouldn’t just cut a section out of this rigid nylon (HIPH PA6) pipe where it projects beyond the tank, slip some 4.5/ 5.0 internal diameter rubber hose over it and insert a suitable T piece?
There’s plenty of space nearby to mount the metering pump at the correct angle and, from there, it’d only be 1m across the van to where I’d take the pipe through the floor to the Truma. Conveniently, this entry point would be a little way short of the heat from the exhaust pipe. Couldn’t ask for more!
Please see location picture below.
I’m also including a picture of the location that I think is more commonly used, adjacent to the Webasto. This has the advantage of having a short piece of existing rubber hose to plumb into and it even has a spare mounting point for the metering pump (right next to the Webasto one). BUT it’s also really tight for space in that area and, also, connecting there and running back down the van to the Truma would involve three times as much pipework.
Any views on my proposal very much appreciated!
Also, if you don’t might reading on (sorry for pushing my luck...), I have 3 related questions:
- In my favoured location there’s a simple pipe connector. Don’t suppose there’s a branching adaptor I could insert into this, to avoid cutting into the pipe?
- What does my Webasto actually do? (see pics of the 2 labels). It clearly heats the coolant and it’d be great if that included the coolant that circulates around the engine (as opposed to just the heater matrix), as it can take 20-25 mins to get up to temperature on cold mornings. Would it need adapting to achieve this?
- This van is full of surprises! The other thing I came across that I didn’t know I had was a rear cabin heater. Unfortunately, it was in the way (and not needed, if the Truma works…), so I’ve just removed it and its flow and return pipes (using alloy plugs to terminate them close to source). Will this give me problems with the Webasto and/ or the van’s software? I’ve had VCDS for a few months and have used it for a few things but would need to research how to sort these sorts of issues.




