Remove/install rear suspension valve body - AR32.50-P-0002SX

MODEL 216, 221.0/1 with CODE (487) Active Body Control (ABC) 

Fig 1: Identifying Rear Suspension Valve Body Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
	Notes on fitting hydraulic lines and hoses		AH32.50-P-0001-02A
	Before opening the hydraulic system, thoroughly clean the area surrounding the separation point. Even the smallest dirt particles, introduced into the hydraulic components, can lead to malfunctions and a total failure of the hydraulic system
	Notes on Active Body Control suspension		AH32.50-P-0001-01N
1	Detach left rear wheel
	Remove/install wheels		AP40.10-P-4050SX
2	Remove fender liner in the rear left fender
3	Release pressure in rear axle ABC system		AR32.50-P-0001-01N
4	Separate hydraulic lines (8) using release tool on quick-release couplings (7)	Observe different cross-sections of the quick-release couplings (7).
			Fig 3
		Ensure that no dirt gets into the open quick-release couplings (7) as this can lead to the failure of the ABC system. Ensure that the quick-release fittings (7) latch completely. The hydraulic lines (8) and quick-release couplings (7) are color coded in relation to each other and must not be mixed up.	Fig 2
5	Detach retaining clamps (6); to do this, press protective rubber (9) slightly to one side
6	Separate electrical connectors (2) on the valve unit (Y36/2)	The plugs and connections on the valve unit (Y36/2) are color coded and must not be swapped.
7	Unscrew nuts (1) and remove valve unit (Y36/2) with the complete hydraulic lines (8)		*BA32.50-P-1004-01B
8	Mount hydraulic lines (8) on the new valve unit (Y36/2)	When replacing the valve unit (Y36/2) Check sealing rings for damage and replace if necessary. Check support rings for damage and if necessary replace the complete hydraulic line (8).
			*BA32.50-P-1002-01B
9	Install in the reverse order
10	Fill and bleed ABC system		AR32.50-P-0021SX
11	Carry out plunger travel calibration using STAR DIAGNOSIS	When replacing the valve unit (Y36/2)
		STAR DIAGNOSIS diagnosis system	*WH58.30-Z-1048-13A

Fig 2: Identifying Detaching Tool (230 589 01 33 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Detaching Tool (221 589 01 33 00)

Courtesy of MERCEDES-BENZ USA