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  #21  
Old 02-02-2014, 10:31 PM
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I think i figured out what the problem is. I did the second rear strut today and I noticed the groove that the airline should fit into... I did not notice this on the first one and nether of the guides I used (including this one) mentioned that the air line must go into the groove - otherwise it is very likely that it will pinch off the line when it inflates. I'm pretty sure that's what is happening since when I slide my hand up and on the top of the first bag I can feel that the line is not in the groove.

The down side, is that I have a feeling that I am going to have to destroy the first one just to get it out since it is halfway inflated and I don't know of any other way to get the air strut out to seat the airline properly. If anyone knows of a way I am open to suggestions. Otherwise I'm planning on slicing into the brand new air strut tomorrow to replace it with a 3rd one.... bummer.

The only bright side is that even if I have to buy 3 @ $260 a piece to finish this little project, it is still cheaper than the $1300 the dealership was planning on charging me.
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  #22  
Old 02-02-2014, 10:50 PM
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No need to cut the bag. Get the right side of the car up on jackstands and remove the panels that run along the outer side.The one under the passenger foot well houses the compressor. Just loosen the tubing fittings that exit from the compressor and run back to the bag that you have an issue with. You will be able to remove and re-install the bag.
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  #23  
Old 02-02-2014, 11:34 PM
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I guess the groove is the one that that the line is clearly in between?

Let me know, and I will update the write up.

Lubehead, thanx for that input as well, I will add that to the write up as well (next time I edit).
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  #24  
Old 02-03-2014, 03:18 AM
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gregg3gs - First, I apologize for my reply sounding like you left something out of your guide. The pictures clearly indicate that it should go between the larger grooves in your picture. The air struts I received have a much smaller groove (only visible before the sleeve is put on) that is only large enough for the air line to fit very snugly in it. If I can get a picture of it when this is fixed I will post it. In hindsight, I should have easily seen that the line would go into the perfectly formed groove.

Lubehead - Thank you for the recommendation. The air struts I am using must have a pressure valve in them to keep from lowering if the line is cut, since once I disconnected the line from the pump (pictured below) the airbag still remains very tightly inflated. Another option is to have the dealer deflate the bags using software which would save buying another one - I'm going to call them tomorrow and ask them what they would charge.
Attached Images
  
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  #25  
Old 02-03-2014, 11:53 AM
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You've got yourself in quite the pickle there. With the line outside of the relief, inflating the bag kept increasing the pressure on the air line until it pinched it closed. The only way to deflate the bag now is to reduce the pressure of the spring on the line.

If you did this by jacking up just one side of the vehicle the sway bar would have kept the suspension from completely extending. Just use a floor jack to jack the whole rear end up at once and the suspension will drop a bit farther and hopefully break the seal.

If that doesn't work my next plan would be to leave the line disconnected and drive it. Every time the suspension compresses the increased air pressure should squeeze some air. Couple times around the block and jack it back up. With any luck enough air will get squeezed out that when you jack it up the line won't be pinched anymore.

Last thought, if you live in a cold part of the country you could leave it outside overnight and try it first thing in the morning. Even a 10 degree drop in temp will make a significant reduction in air pressure in the spring.

If none of that works I would get something up there and try and pry it sideways where the line is. With any luck it will rock and release the pressure. This is risky and might damage the spring so I would only try this right before cutting.
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  #26  
Old 02-03-2014, 01:44 PM
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Can you disconnect the electrical and power the valve to let some air out without the dealer?
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  #27  
Old 02-03-2014, 07:20 PM
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Yeah - definitely a pickle That's nicer than I described it.

When I get home tonight I am going to see if jacking up the back end equally gives be any leeway. One thing I don't understand completely, is why the pump does not come on at all after getting the auto-leveling error from the first wheel I did. I pulled the fuse when I did both sides, and initially it would try and inflate the first side when activated. But now with the second one (that is definitely installed correctly) the compressor does not come on / inflate it at all.

Is there a way to force the system to 'reset' the leveling error? Or is that even preventing it from inflating to begin with?
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  #28  
Old 02-03-2014, 11:34 PM
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I would concentrate on fixing the pinched line first and see if it then fixes itself. I'm just guessing but if the control module opens the valve to let air out and the ride height sensor doesn't show any change, it would assume the sensor was bad and the safest choice at that point would be to disable the system and give the warning message.
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  #29  
Old 02-04-2014, 07:46 PM
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Quote:
Originally Posted by wsmeyer View Post
I would concentrate on fixing the pinched line first and see if it then fixes itself. I'm just guessing but if the control module opens the valve to let air out and the ride height sensor doesn't show any change, it would assume the sensor was bad and the safest choice at that point would be to disable the system and give the warning message.
^ I think this way too.
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  #30  
Old 02-05-2014, 04:14 AM
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I thought you can release the air with INPA

http://www.xoutpost.com/bmw-sav-foru...ubleshoot.html
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