So my van (Mercedes Sprinter XLWB) has a diesel heater inside a metal box hanging under the chassis by 4x 17mm bolts.
It is connected to air ducting to deliver the hot air into the back of the van.
It is also connected to a fuel line, and electric cables for the thermostat and controls inside.
Finally, it also has a length of exhaust and air intake piping.
The diesel heater needs servicing (or replacing). This will likely involve taking it to a specialist heater place for testing, or purchasing a similar model. They asked if I could please bring them just the heater, not the whole van.
One side of the metal box is a plate bolted on, but I can't open it with it in-place. The small bolts are accessible, but 2 of them have no room to pull out. So I can't take the side of the box off, to see inside.
I need to detach the entire metal box heater from the underside in a way that is:
- Safe, in terms of detached cables, pipes, etc
- Replaceable - ie, I like the current setup, and want to just return the serviced/new heater into the metal box
- Allows me to continue driving, because I can't be sure it will all happen in a single day.
I am an amateur. I have tools, but no workshop.
What is my strategy?