[W126 Coupe] Self-leveling suspension

[Mister McGoo]

Markus, Vance...
 
Thanks for the replies. My concerns were dealing with the pressure line… is it constantly under a "resident" pressure that needed release, does lifting the rear wheels to relieve the weight pressure help (or hinder, or neither). I was assuming that at rest (no change to rear loading) the level valve shuts the lines to the shocks/rams and the lines to the shocks becomes static, and while the engine (and pump) is "off" no further pressure is introduced to the line other than the static resident pressure. However, I have no data explaining how the system works. The other question I have is after installing a new pressure line, how do you bleed off the air in the hose (as you would in a hydraulic cylinder installation), or is that necessary?
-Bellamy 

 


Date: Wed, 10 Nov 2010 05:33:45 -0500
From: markusfmeyer at gmail.com
To: mbcoupes at mbcoupes.com
Subject: Re: [W126 Coupe] Self-leveling suspension


I've had both lead and had to replace them on one of my cars.  For the pump, you want to drain as much fluid from the reservoir as you can or the line will leak out all over.  Then its just 4 allen screws that you take out, the in and out hydraulic lines, and replace.  There is a "key" type chuck on the inside that you want to make sure you don't lose.  The high pressure line off that pump snakes behind and under the alternator and down below. Its a PITA to replace, but doable.  I practiced on my spare engine first to get the hang of what angle to do it at.  I also think I removed the alternator to make it a little easier so I could route it under the air pump.
 
Markus


On Tue, Nov 9, 2010 at 11:12 PM, Michael Ramay <mike.ramay at gmail.com> wrote:

Most of the time, it's the pump that is leaking. A W126 hydraulic pump has three large o-rings that get old and hard, then leak. 

Mike 





On Tue, Nov 9, 2010 at 8:00 PM, Mister McGoo <eelploot at hotmail.com> wrote:


I have a W124 1990 300TE (station wagon) with the self-leveling rear suspension. This is essentially the same system on the 123 300TD s/w and some models of 126 SEL, & SEC. The pressure hose from the pump has developed a leak and need replacing. 
Has anyone had experience with this self-leveling suspension system who can detail the procedure? 
 
-Bellamy


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