Hot water system change
Right before Paul Jensen left for the trip around the Olympic Peninsula detailed above, he had to deal with a flooded passenger side floorpan caused by leakage from the connections on the Isotemp 15-liter hot water heater used in the XV-JP. With considerable effort, including having to cut an access panel in the bottom of the propane locker, he got in to tighten the fittings and stop the leak.
Temporarily. A few weeks ago, I noticed that I, too, had a small pond under the passenger's seat. After checking with Paul to see how he had fixed things, I reopened the access hatch he'd cut and took a look at the numerous nylon push-to-fit connectors that EarthRoamer was forced to use in order to fit the 15-liter unit in the space available. Which is to say, basically no space at all; the distance between the driveshaft hump and the passenger side B-pillar interior trim was pretty much identical to the length of the Isotemp tank.
The view through Paul's hatch looked like this:
The Isotemp heat exchange units are well-regarded and widely available in the U.S., and you can't fault EarthRoamer for trying to maximize the amount of hot water available. But I came to the conclusion that the connections, constantly under stress as they were, were never going to be anything I could count on and that a major redo was required. This involved disassembling the passenger side of the cabin, which was a pain as the heater got in the way of important things like the rear seat bolts, but once everything was out you could see the situation better.
There was, for example, no more than a quarter-inch of clearance here:
And flat-out ZERO clearance here; it was scrapping the Jeep’s B-pillar trim piece:
The tank is gone now, though, after a lot of really annoying work, never to return. The floor under where it was is a mess, with part of the surface gone where ER stuck the tank supports down with some unknown mastic.
I also got rid of the plastic waste tank valve next to the passenger seat and put in metal fittings with an adapter that allows you to disconnect the hose. (The whole assembly had originally been glued all together.) The valve is under the truck now (tucked in very well), with a garden hose quick connect on the end. Muy better.
The floods have made the floor areaa complete mess. I’ll go back and stabilize the rust when I put the new, smaller heater tank in.
At the far left, you can see one of the two coolant hoses that run from the heat exchanger. I’ve plugged, but not cut, them, and I also left the PEX hoses from the pump and to the sink the original length, connecting them together with Sharkbite press-to-connect fittings that I can easily undo. The hope is that installing the new tank will be a piece of cake using the previous plumbing.
The new tank, an Elgena Nautic Junior, is 10 liters rather than the original 15, making it usefully smaller. Also, it has an added benefit of having a 200 W 12V DC immersion heater which I can use to keep the water warmed longer between runs of the engine.
Sadly, it’s coming from Europe through the efforts of Steve at Eurocampers, so it’ll be a while in transit (as I turned down the chance to double its cost by paying for air shipment.) In summary, all should be great when it gets here.
More will get posted when the new unit arrives.