Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 12-26-2001, 11:01 AM
Registered User
Join Date: Jul 1999
Location: Youngstown, OH
Posts: 150
Auto-level system flushing procedure??

Anyone know how to flush the hydraulic fluid from the auto-level rear end of a 1998 E320 wagon? Or any similar system?


Reply With Quote
Old 12-26-2001, 12:11 PM
Registered User
Join Date: Jul 2001
Location: Western Michigan
Posts: 1,080
I just did my 1987 300TD a few week ago.

I used a feed and flush method and it is not a 100% replacement of the fluid as there is still some in the spheres and rear shocks.

First, only use the MB special hydraulic fluid.

I just attached a small flexible hose to the return like on the top of the reservoir and start the engine. The other end of the attached hose was in a milk jar and you can see the discolored fluid coming out. I waited until the reservoir was almost empty and dumped in a liter of the MB fluid. When I saw the fluid coming out was clear I stopped the engine. It takes about another liter to bring the reservoir level up to the max level. It took a total of 2 liters.

The reservoir itself is disclosed (plastic) so even the fluid inside is clear it may still look dirty from the outside.
Reply With Quote
Old 12-26-2001, 12:44 PM
Posts: n/a
I have a 91 300TE 4matic and I have emptied and filled the reservoir several times as a feed and bleed method. I helped another guy at a DIY session with a 123 wagon by jumping up and down on his rear bumper with the engine running while he had the return hose routed to a bucket, but it seemed rather extreme.

Reply With Quote
Old 12-26-2001, 10:37 PM
Registered User
Join Date: Jul 1999
Location: Youngstown, OH
Posts: 150

Since you two both have wagons, answer this. How much 'bounce' does your car have if you push down on the tailgate. I get about 2" before it feels like I hit a bumper which I know isn't happening.

I'm wondering if my auto-level is set too light and is engaging too early.


Reply With Quote
Old 12-27-2001, 08:15 AM
Posts: n/a
What you describe sounds about like mine. The rear susp is very stiff and there is no adjustment ever required to my knowledge. Most people screw the system up when they attempt to tune it. The hydro-pneumatic compensator (bellows thingy attached to the rear diff and frame by linkage) is set by the factory to achieve the proper ride height. The dampening characterstics are set by the valving of the struts and the hydraulics.

I've been told by several techs that you only replace struts when you see leakage, pressure spheres are good for 100 - 150 k miles (mine are good at 215 l but the car is pampered), and the h-p compensator as needed for leakage also.


Reply With Quote
Old 12-27-2001, 09:43 AM
Posts: n/a
Last winter my 560SEL was bone-jaringly stiff for passengers riding in the back seat. The speheres checked out OK, no leaks, etc. I replaced the rear shocks/bushings and the ride was perfect.
Reply With Quote
Old 12-27-2001, 09:55 AM
Registered User
Join Date: Jan 2001
Location: Alexandria, VA
Posts: 38
I changed the reservoirs on a 1980 300TD wagon I had, and if I remember correctly, I jacked the car up, then used another jack to raise each rear wheel to compress the strut. That assured as much fluid as possible was replaced from each strut. A little time consuming, but I think it managed to put more new fluid in the system than would have been possible without doing so.

Ted, How many miles did you have on your 560SEL when you changed the struts?
1997 S600 Coupe
2002 Lexus SC430
2004 Lexus RX330 (wife's car)
1993 500 SEL
1994 E320 (wife's car)
1987 300 SDL
1978 450 SEL
1980 300 TD (wife's car)
1969 280 SL
Reply With Quote
Old 12-27-2001, 11:36 AM
Posts: n/a

The 560SEL had about 101k miles. Replaced them with Bilsteins if I remember correctly. Now 107k...
Reply With Quote


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
230TE (1987) cold-start/idle/economiser system (auto gearbox) Mercaholic Tech Help 11 12-10-2003 10:09 AM
Interesting Post on AC from the Ritter/Easley Board ctaylor738 Tech Help 4 08-08-2003 06:36 PM
Auto Level Suspension smartin Diesel Discussion 14 02-12-2003 03:53 PM
Need some help with the shorthand, fwiw suginami Open Discussion 4 06-27-2002 04:03 PM
More auto-leveling system help PLEASE!!!!! intruder Tech Help 0 01-02-2002 10:49 PM

All times are GMT -4. The time now is 05:05 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page