From the Armoured X350 workshop manual. I was kind of kidding about the adjustable bit. They appear to be but I wouldn't have thought there would be a huge adjustment range, just enough to get the car sitting level.

 

 

The idea of spoofing the ASM into thinking the Front Suspension is all good after replacing with Coilovers and leaving the rear air spring in place to be filled & lowered by the system would be a nice combo. I think MK 82 had the ASM unplugged and manually picked the compressor relay to fill the air springs in the rear. Maybe MK 82 can elaborate or comment on this topic. The concept should be explored and tested. I'd volunteer if/when I loose a front air spring, but until then - maybe the How To steps could be outlined.
Bob

 

With ASM disconnected, I tapped into the harness. With the relay installed, you must apply 12v to CR91-12 colored brown/red. This allows the compressor to run. To route the air where you need it you simply ground the applicable circuit. To power the solenoid block you must apply 12v to CR 91-1 yellow/green.

Tank CR 91-6 Black/Orange
LF CR 91-2 white/red
RF CR 91-3 white/black
LR CR 91-5 white/blue
RR CR 91-6 white/green

I installed a pressure gauge in the tank so I didn't blow it up. Limit the comp run time to about 2 min and cool for about 2 min. The system operates at about 10 Bar or 150 PSI. I pumped the tank to 200 max. I am debating leaving the compressor and tank for emergency air. I have been under the weather for a few days and hope to finish the rears in the next few days.


I really don't want to experiment with the hybrid system as I want to be done with this pain in the butt air ride.

 

FWIW, the technical guide says nominal pressure is 15 bar (218psi) and that there is a pressure relief valve on the compressor set to 17.5 bar (254 psi).

 

You know, you are beginning to annoy me. I said about. What is your point. Did I misquote? I can tell you from experience that the bags operate at the pressure I stated. Do you know what nominal pressure means? It means that the ASM shuts off the comp at that press. The press relief is to keep thing from blowing up. Remember I put a gauge in and watched it. Garbage up someone else's thread please.

 

I am not trying to annoy you and am sorry if you took offence. I was just stating facts for future viewers of this thread so they know what the published specs for the compressor are as 15 is 50% more than 10 and not everyone has access to the info and it might help them in trouble shooting.

I appreciate you sharing your experiences through this thread (and others) and look forward to seeing your ride comparison.

Admins: Fell free to remove my posts if they are cluttering the thread.

 

Don't be annoyed with U10.

While it's true his posts, here and elsewhere, have a certain "in your face" edge I have always found his info to be helpful and informative. A few times he has come through with timely posts when the rest of the world was silent. We can't all be charm school graduates.

I take him at his word -- "no offense intended".

 

Points taken.

 

Well I have Good and Bad new. I finished the install today and was looking forward to a test drive. That is the Good News.

Now for the Bad! I stood back to check the stance and immediately noticed that the rear was much too high. I mean jacked up pickup high. I thought maybe it was because the battery and spare were out. However, after reinstalling them the butt is still poking up.

Standard ride height in the rear is 373 +/- 15 mm. The rear is sitting at about 457. That is 69 mm or 2 and 3/4 inches too high. WTFO.

I immediately checked the other side--same. I then called Tech and spoke to Robert. He was clueless. He asked me to send photos to Marvin whom I believe to be the owner. I am waiting to hear from them.

 

Hmmm stampings on the springs? Ide bet the rear got some front springs by mistake. I had that happen to a guy i was doing his 4x2 lift and they sent 4x4 springs. It rode like a buckboard. They sent the correct ones and have give cophensating me ever since with free or reduced costs parts

 

Time will tell. I sent them the 4 photos I posted here. Now they want a photo showing the full car. Looks like a shackled up GTO.. Will continue saga tomorrow. I need a scotch.

 

It is just about impossible to mix the fronts and rears, they are two different lower mounts.
Here is a photo of the Arnott's Coil-overs, I just might get those this summer?

 

well maybe not fronts, bu something is up. Maybe wrong spring rate. shocks too long. lower spring cups too high?not seat...etc

 

Well gents, truth is stranger than fiction. I went out this morning to drive the car out of the garage to take a photo of it for the tech folks at Arnott. The butt was still sticking up in the air. I removed the chock I had under the front wheels and drove it out into the sunlight. When I got out of the car with the camera and started to take the photo---THE CAR HAD COME DOWN TO NORMAL RIDE HEIGHT IN THE BACK.

The only thing I can figure is the rear suspension was in a bind. I had it jacked up with a floor jack under the diff. When I let it straight down with the front chocked, it left the rear in a bind. The 25 ft drive out of the garage allowed it to straighten itself out! WOW!

I will take it for a ride today and finish the write up but the crisis is over.

 

That is good news for the rest of us who are wanting to convert.

 

Wow a bind that can hold half of 3700lb - happy it all came out good
Eddie when you lift on the diff any special you do - I have seen other people do that - never felt confortable doing that?

 

"MTW" There is a "CAUTION" in the maintenance manual but I cannot remember if it was for the Diff or Axle... something about causing damage to seals and bushings. Maybe one of the Techs might elaborate on that?

 

That's because of the independent suspension. The tires were probably holding the car up \ /

Looking forward to hearing about the test drive. The stance looks great.

 

I think it is because the bottoms of the tires camber in and cannot stand up properly till it rolls. My Corvette does that. I pick the Vette up by the rear diff all the time. There is plenty of structure for the diff to allow jacking on both cars.

I pick it up by the diff and then put it on jack stands. Sure are a lot of armchair quarterbacks in this crowd!