carlos be EXTREMELY careful if opening hydraulic fittings.these are under high pressure.high enough to drive oil into your skin or eyes.according to MBZ ride height should be adjusted by shimming the rear coil springs not adjusting the level control lever.basic system pressure is also a primary check.this would require hooking a gauge to the level control valve

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michael cole 1980 300SD gone now but not forgotten,87tdt,90 300te 4matic 95 e320 wagon