Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E70) Forum
Arnott
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-20-2018, 04:57 PM
jeep's Avatar
Member
 
Join Date: Jul 2008
Location: USA
Posts: 414
jeep is on a distinguished road
Replacing Rear Air Spring

Time to change the rear air springs for the self leveling suspension.

Lot's of good forum posts DIY information etc. available now. I am debating between getting Arnott's for about $300 a pair or getting one from ebay for $70 a pair. Arnott's are also not OE/OEM as far as I know? Looking at all the info. I could find I am leaning towards the Arnott's however I would like to hear experiences from folks on either side of the aisle.

Thanks
__________________
2008 E70 X5 3.0si
Sport | Prem | Adaptive Drive | Tech. | Cold Wthr | Rear Climate | 3rd Row | Running Boards | iPod/USB

2009 E93 335i
Sport | Prem | 19" 230 Style Rims | Navigation | Logic 7 | iPod/USB | Sat | HD Radio | Comfort Access | Heated Seats | Pure Joy

E36 328is GoKart (Sold)
Manual | HK | Trip Comp. | 17" Rims
Reply With Quote

Sponsored Links

  #2  
Old 06-20-2018, 05:02 PM
Toothbrush's Avatar
Member
 
Join Date: Dec 2017
Location: Here and there
Posts: 175
Toothbrush is on a distinguished road
I've had cheap ones from ebay that didn't last very long. I actually still have one sitting in the garage never used as a 'seller replacement' for the first one that went bad.

The second one went bad before it arrived, so I went ahead and got both left and right Arnott bags.

I figured the cheap ones were cheap enough to justify 'trying them out hoping to save some cash and replace with quality if they fail'.
__________________
2007 X5 4.8i - 12/06 Build - Silver/Black - 3rd Row
Reply With Quote
  #3  
Old 06-21-2018, 02:03 AM
ard ard is offline
Member
 
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 5,280
ard is on a distinguished road
Buy an Arnotts from FCPeuro and they have a lifetime warranty....
Reply With Quote
  #4  
Old 06-22-2018, 02:45 AM
jeep's Avatar
Member
 
Join Date: Jul 2008
Location: USA
Posts: 414
jeep is on a distinguished road
Thanks folks, I will go with Arnotts. Got a good price on Amazon.
__________________
2008 E70 X5 3.0si
Sport | Prem | Adaptive Drive | Tech. | Cold Wthr | Rear Climate | 3rd Row | Running Boards | iPod/USB

2009 E93 335i
Sport | Prem | 19" 230 Style Rims | Navigation | Logic 7 | iPod/USB | Sat | HD Radio | Comfort Access | Heated Seats | Pure Joy

E36 328is GoKart (Sold)
Manual | HK | Trip Comp. | 17" Rims

Last edited by jeep; 06-22-2018 at 02:54 AM.
Reply With Quote
  #5  
Old 06-22-2018, 09:16 AM
Toothbrush's Avatar
Member
 
Join Date: Dec 2017
Location: Here and there
Posts: 175
Toothbrush is on a distinguished road
Good choice.


If I can remember later tonight I'll take a pic of the cheap bag I have so when you get the Arnott version, you can see there's a big difference.
__________________
2007 X5 4.8i - 12/06 Build - Silver/Black - 3rd Row
Reply With Quote
  #6  
Old 07-13-2018, 06:01 PM
Member
 
Join Date: Nov 2016
Location: Folsom CA
Posts: 63
Westlotorn is on a distinguished road
I just replaced both of my rear air springs with the Arnott bags.
Information on this forum certainly saved me time and energy.

Tips I would pass on.

I jacked up the rear of the car, blocked the front wheels, both sides, used my floor jack under the rear differential being careful not to let the jack hit the diff cover. Raised the car and installed jack stands under both body jack locations in front of the rear wheels.
Now you can put your floor jack under the rear wheel hub support to lower the rear or raise it as needed to change your air bag.

On the bottom of the new and old bags there is a locator bump and there is a recessed area in the air bag support to receive this bump. Take a sharpie and mark this bump location on the bottom of the air bag and mark the air bag support on the differential as to the location of this locator. It keeps the bag from turning once it is installed.
If you know where this is you can quickly install the upper and lower properly.

When popping off the old air bags I used a carpenters crow bar, 24 inch bar. Just slipped the sharp edge of the crow bar under the air bag and pried it up and off.
Did not need to pinch the lock tabs at all. 30 second job each side. Then turn the bag, it will only turn one direction, and lower it out. Remove the air line after you can maneuver the air bag into an easy position to work. Go slow and be careful moving the bag so you don't break the air line. There is a clip on the forward body side of the air bag that holds the air line in place by the top of the bags. Both sides on my car these clips popped open releasing the air line as I worked. The line popped right back in once I had everything else installed. Do this BEFORE bolting the tire in place or you will not have access.

When I went to install the first air supply line to the drivers side air bag I pushed the red air line in but had no idea how deep it actually went into the air bag.
I kept pushing and guessing to see how deep it went in and if I might be done.
On the Pass side I put 4 small marks on the air line, about 1/4 inch apart.
I also wiped a little dawn dish soap on the line where it needed to slip into the air bag.
This side went in smooth and very quick and I could see by my marks that more than 3/4 inch of hose was inside the fitting. It is back on the road and all seems well.
I am still a little nervous about the drivers side air line since it went in unmarked and I have no idea if I got it fully installed. It will not pull off so I hope it is good.

Third item, some on here reported the factory and Arnott springs look different.
The factory Air spring has a cover on it. This cover will pop right off and installs perfectly on the Arnott springs just snap it on the new spring, now the two look nearly identical.

I did un bolt the shocks to gain the extra 1" of space by lowering the axle a little bit more. This made a nice difference, gave room to easily slip the new Air Bag into place. You can do it with the shock in place but it is only one bolt and with an Impact gun this is off in 30 seconds.

Finally, my old air bag had a leak, a very slow leak. I mixed up a strong mix of water and dawn dish soap, maybe 80% water. Squirted this over both air springs with them fully inflated and nothing happened. Having done this before looking for engine leaks over the years I knew to wait and watch, I waited about two hours and came back to inspect the bags. The drivers side bag had a 3/4 inch wide mound of small bubbles in one spot. Leak Found. Now I ordered the new bags. By the time they came in my car had settled all the way down, bags now empty. I did not disconnect the fuse or the battery. I just made sure I did not open a door or touch my key fob until I had the car back on the wheels again. I lowered my jack till the car was a little lower than normal height, opened a door and the air bag pumps turned on and filled them up.
Taking my time on this job and taking time to rotate my tires this was only a 2 hour job with no headaches.

Hope this helps those doing this job in the future as many of your have helped me in the past.

Last edited by Westlotorn; 07-13-2018 at 06:18 PM.
Reply With Quote
  #7  
Old 07-19-2018, 07:50 PM
jeep's Avatar
Member
 
Join Date: Jul 2008
Location: USA
Posts: 414
jeep is on a distinguished road
Quote:
Originally Posted by Westlotorn View Post
I just replaced both of my rear air springs with the Arnott bags.
Information on this forum certainly saved me time and energy.

Tips I would pass on.

I jacked up the rear of the car, blocked the front wheels, both sides, used my floor jack under the rear differential being careful not to let the jack hit the diff cover. Raised the car and installed jack stands under both body jack locations in front of the rear wheels.
Now you can put your floor jack under the rear wheel hub support to lower the rear or raise it as needed to change your air bag.

On the bottom of the new and old bags there is a locator bump and there is a recessed area in the air bag support to receive this bump. Take a sharpie and mark this bump location on the bottom of the air bag and mark the air bag support on the differential as to the location of this locator. It keeps the bag from turning once it is installed.
If you know where this is you can quickly install the upper and lower properly.

........
Awesome writeup, unfortunately it came a bit late for me as I changed the bags 3 weeks back. I did essentially follow the same steps except for using a crowbar, popping off the shock or marking the lines (am a bit nervous as well) and I did remove the fuse and let the bags deflate on their own before starting the job. Took me about the same time (2 hrs). Inserting the bags into the groove was a pain and took the longest.

I did a long road trip after the swap and the bags have held up fine (fingers crossed).

Adding some pics if that helps anyone:
Attached Images
     
__________________
2008 E70 X5 3.0si
Sport | Prem | Adaptive Drive | Tech. | Cold Wthr | Rear Climate | 3rd Row | Running Boards | iPod/USB

2009 E93 335i
Sport | Prem | 19" 230 Style Rims | Navigation | Logic 7 | iPod/USB | Sat | HD Radio | Comfort Access | Heated Seats | Pure Joy

E36 328is GoKart (Sold)
Manual | HK | Trip Comp. | 17" Rims
Reply With Quote
Reply

Bookmarks

Tags
air, airbag, spring, suspension

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 10:49 PM.
vBulletin, Copyright 2019, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.