Right, it's time to get into the EAS issues on my Range Rover.
Feel free to ignore this thread if it's too tedious but I thought I'd be better off writing stuff down methodically and if anyone has any advice (apart from Mr Molotov) just shout/laugh at me....

Symptoms:

1. Compressor runs too much. Has been like that for (ahem!) time.
2. Sits down overnight, parked on a slight slope.
3. Sits down over a couple of days sitting on the flat.
4. Just realised that the green dust seen between the solenoids in the block is probably dessicant!
5. Driving back from Salisbury, EAS boop boop and the Nanocom revealed "Valve permanently closed RHF"

She managed to drive back for 2.5 hours on emergency valves at 65 PSI all round (maybe 55 at the back?) and sat down again over three days. She self levelled on the way down, which was strange but I guess it's logical that the bags on the high side get squished more.

Resources!

2x Valve Blocks with Driver pack and plastic box.
The fitted one was last rebuilt 6-7 years ago
The spare on was rebuilt a couple of months ago but I couldn't get any pressure into the system when I hooked it up. Hmmm.
1x Dunlop compressor (fitted) which wasn't able to get us home, and I forgot to unplug it when we started driving again so it was probably running all that time, probably toast.
1x "Good, used" OEM compressor from ebay (the CNS4x4 Guy in Wales) which hopefully will run OK but needs testing.
1x compressor rebuild kit including sleeve from X8R

Nanocom
Calibration Rods

small brain.

First things I'm going to check:

1. Has the Dunlop Compressor died?
2. Is the dessicant in the dryer now done? (It's ancient, last changed just before a summer camp!) and is it now green?
3. Does the new pump run and produce pressure?

Then we'll see....

Dunlop compressor is probably toast. If it drops with the bypass valves in either your air springs are getting towards retirement age or, more likely, you have a slight leak on the connection between the pipes and the valves. The pipes form a groove where the O rings sit so will start to leak at some point. Simple fix, trim a millimetre or so off the end and chamfer it with a pencil sharpener. Unless you have some serious leaks in the valve block then anything from the desiccant pack isn't going to end up between the solenoids, so what the green can be is anyone's guess.

In between the nice weather, I've been working my way through the stock of valve blocks I bought ages ago as I can do something useful inside. Got 3 that have been done and tested (it was 4 but I've sent one to Germany for Max) and another 7 to go..... So I'll have a few ready for fitting shortly.

Well, she's up! Although I'm not counting this as a 100% fix.

Richard, I'd definitely be interested in another valve block - especially if tested! Driver pack too....

How it went:

1. Dunlop compressor is indeed toast - didn't even start.
2. New Compressor ran and produced pressure. I can hold my thumb over it, so maybe I was harsh on the other one I bought... milk, spilt, etc.
3. Green stuff was present again, I decided it's blowing out of the solenoids (can't see where else it would come from) so out came the whole EAS box.
4. I took the dessicant dryer holder thingy off, sprayed it with WD40 in case it was tight and immediately snapped the plastic on the airbox. Grrrrr. I then failed to take the lid off so I blew through it and it seemed to not be an obstruction so I guess that was a waste of time. New dryer is on the list.
5. Put the refurbed EAS box and "new" pump in loosely, found that the airhose threads on the new pump were f£$"$d. Swore a couple of times and swapped the brass thingy for the Shiny! New! brass thingy on the Dunlop pump. The Dunlop thingy was much easier to remove, suspiciously so... another leak? We'll never know.
6. Because I'm become a Professional EAS Box Swapper in my spare time, I just slapped it all together without putting any bolts in and fired her up. Woosh! It all works!!
7. Found that one of the front legs on the pump was badly bent. Mild Swears, subsided when I realised how easy that thin tin is to bend with a decent pair of pliers.
8. Put the Nanocom on while the engine was running. No dice. No comms! also, crashed the Nanocom which is new to me. I tried reading faults and it locked solid so I had to restart it. Tried reading settings and it went to black screen and didn't restart. Luckily it restarted when I power cycled it, so.. the Nanocom lives. Seeing as it's one of the most expensive parts on the Duchess, I'm relieved.
9. Decided that a P38 with air suspension that stands up but can't be adjusted is better than one which talks to a Nanocom but sits on its arse.

10. Let the pump run until it shut off - suprisingly quick! Also left the thing idling while I cleared up. Pump did not need to run again. Hmm, that Dunlop was actually a pretty solid unit.....

11. Test drive coming up after a cup of tea.

So, yes - please may I put my name down for a known good EAS setup? Ideally I'd like the box and all its contents, but whatever can be spared would be gratefully paid for.

If anyone wants a shagged but pretty Dunlop pump (minus Brass thingy, but with the old one if you feel like fettling the threads) or the the guts of an OEM one with a snapped bolt at the front - let me know.

Time for a cuppa!

She did fine on the road... fixed for now!