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2007 E550 airmatic issue

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2007 E550 airmatic issue

 
Old 05-03-2019, 04:04 PM
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07 E550 4M - 11 Audi TT - 99 Expedition EB
2007 E550 airmatic issue

As of today my passenger rear corner is completely bottomed out. Driver side rear seems low as well but itís not completely dropped.

I pulled the wheel, trunk liner, and checked the junction block near the rear diff. Sprayed some soapy water but didnít see any obvious problems. Once itís started it raises back to normal and then takes about 30 minutes for the passenger rear to bottom out.

Any reason to think this is anything other other than a rear air spring? Looks like Iíd have to do both sides for a parts cost of around $625. Hopefully I can do the work myself.





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Old 05-06-2019, 03:21 AM
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2009 e550 4Matic
High probability that its the rear bags.
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Old 05-12-2019, 07:09 AM
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After watching this video,
I removed the old air line fitting while installing the Arnott rear spring. Now with everything back together, I canít get the air line to seat/lock into the new voss fitting they provided. Iíve been at it for hours total. I bought both sides so I tried the fitting from the other air spring as well. Iíve tried a bit of oil, grease, eventually trimmed the air line down a couple mm with a razor etc. No matter what I do, the air line just slides out of the new fitting. I canít press it in any harder. Has anyone else run into this?
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Old 05-12-2019, 07:56 AM
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Did you put the Voss fitting into the air spring first, before putting the air line into the Voss fitting? The air hose has a slight notch towards the end, that is what holds it in the voss fitting. If you've trimmed the end of the air hose, that may be why its not holding into the voss fitting now.

This
may be helpful. It's not the greatest quality but he gets the job done.

What options do you have now? Epoxy it to the fitting?
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Old 05-12-2019, 10:33 AM
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Yeah the fitting is in the spring and then I removed the white clip. I tried getting the line in for quite some time before trimming the end. The end had some lines worn in from the old fitting so I thought maybe that was what was holding me up. It seems like the line is probably getting stuck on the collar at the end of the fitting. Iím not sure why this is so difficult.

Do you mean epoxy the collar onto the line?
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Old 05-12-2019, 12:50 PM
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Ended up getting it. Not sure what changed. I had tried the locking collar both ways and had no luck. This last time the collar seemed to seat better and finally the hose went in further. Passenger side is aired back up and seems to be holding. Time will tell if I still have issues or a new leak from that line.

I guess Iíll start on the driver side. I think Iíll just be reusing the oem fitting this time to save some headache. Iím going to attempt to remove the oem reservoirs as well. Also on the passenger side, I noticed a washer had fallen out but Iím not sure from which bolt. I think I only removed 4 bolts in total so Iíll try to be more aware of where it is on the driver side, then Iíll put it back on in the passenger side when Iím sure of where it goes.
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Old 05-13-2019, 12:22 AM
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I had a similar issue with my arnott rear bags. I could get the line all the way in, but if I pulled on it with any amount of force it would just pull back out. I ended up getting pissed and running out of time, shoved it in and called it a day. Its been nearly a year and its holding fine, hasnt leaked a drop. I spent more time messing with that damn air line than I did replacing the bags
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Old 05-13-2019, 12:56 AM
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That is amazing how it stays in place. You figure with all that air pressure going through that small air hose, it would pop out easily. But somehow it stays in place.
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Old 05-13-2019, 01:00 AM
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Same here on the time spent. Iím surprised itís staying in for you if you can still pull it out by hand. On the driver side I reused the oem fitting which wasnít particularly easy either. It didnít really want to spin. Iíll see how it holds up overnight and decide if I need to use a new fitting. Hopefully not.

How do you like the Arnott rears? Iíve read mixed reviews about them being harsh, great, and that they disable the ADS. I believe the ads (comfort, sport1, sport2) are a function of the shocks so Iím hoping that still works. Iím assuming theyíll be more harsh due to lack of reservoirs but hoping not enough to notice.

its been about 6 hours now and itís still raised. One side appears to be a bit higher in the rear but I have t taken measurements. It might be that my garage slants a bit to the middle.

Originally Posted by rodneypierce View Post
I had a similar issue with my arnott rear bags. I could get the line all the way in, but if I pulled on it with any amount of force it would just pull back out. I ended up getting pissed and running out of time, shoved it in and called it a day. Its been nearly a year and its holding fine, hasnt leaked a drop. I spent more time messing with that damn air line than I did replacing the bags
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Old 05-13-2019, 01:04 AM
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Originally Posted by rtbrjason View Post
Same here on the time spent. Iím surprised itís staying in for you if you can still pull it out by hand. On the driver side I reused the oem fitting which wasnít particularly easy either. It didnít really want to spin. Iíll see how it holds up overnight and decide if I need to use a new fitting. Hopefully not.

How do you like the Arnott rears? Iíve read mixed reviews about them being harsh, great, and that they disable the ADS. I believe the ads (comfort, sport1, sport2) are a function of the shocks so Iím hoping that still works. Iím assuming theyíll be more harsh due to lack of reservoirs but hoping not enough to notice.

its been about 6 hours now and itís still raised. One side appears to be a bit higher in the rear but I have t taken measurements. It might be that my garage slants a bit to the middle.
The ONLY complaint that I have with them is the fact that mine make noise. On my set anyways, the upper holes for the retaining stud were bigger than the plastic bushings. So they tend to move around a little bit and make a slight clunk noise when going over larger bumps or half curbs (like entering a complex). I cant say for the harshness as my car is also lowered, so it doesnt ride all that great anyways. I dont think they are any harsher than the stock bags though.

The rear bag also has nothing to do with the ADS. That all works just the same.
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Old 05-13-2019, 01:05 AM
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Originally Posted by F1Fan View Post
That is amazing how it stays in place. You figure with all that air pressure going through that small air hose, it would pop out easily. But somehow it stays in place.
This was my exact thought. I was pretty well pissed by the time I decided to just shove it in, tighten the fitting down and call it good. Its not been any issue though. *knock on wood*
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Old 05-13-2019, 01:49 PM
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Car was still raised this morning. Took a quick ride and seems to be okay. Didnít notice any clunking or difference in ride quality. Instructions indicated I should get an alignment after the new air bags were installed, but nothing I removed seemed adjustable and it appears to be the same as before so I think Iíll skip the alignment for now.
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Old 05-13-2019, 01:59 PM
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Originally Posted by rtbrjason View Post
Same here on the time spent. Iím surprised itís staying in for you if you can still pull it out by hand. On the driver side I reused the oem fitting which wasnít particularly easy either. It didnít really want to spin. Iíll see how it holds up overnight and decide if I need to use a new fitting. Hopefully not.

How do you like the Arnott rears? Iíve read mixed reviews about them being harsh, great, and that they disable the ADS. I believe the ads (comfort, sport1, sport2) are a function of the shocks so Iím hoping that still works. Iím assuming theyíll be more harsh due to lack of reservoirs but hoping not enough to notice.

its been about 6 hours now and itís still raised. One side appears to be a bit higher in the rear but I have t taken measurements. It might be that my garage slants a bit to the middle.
ADS is in the shocks not the air bags; for the fronts since they are strutts new arnotts do not use ADS.

Arnott rears are good; I've had them installed for a few years now. About 30k miles on them. Great ride.
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Old 05-13-2019, 07:00 PM
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Took the car out for a while and it felt fine. When leaving the store though, I realized the car is sitting much higher. Particularly in the front. I didnít change anything other than the rear bags though still Iím not sure why that would be. I normally have it in sport 1 and it is now and the raise function is off. I did try the raise function and it raises up further and goes back down as expected, but I would say there is nearly 2Ē more wheel gap in the front than there was before. Is there some kind of reset or relearn procedure? I had the battery disconnected during the swap.
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