Remove/Install Level Control Valve Unit - AR32.31-P-0650GQ

Model 166, 292 

with code 489 (AIRMATIC Dual Control/semi-active air suspension) 

Fig 1: Level Control Valve Unit Components Location - Model 166 With Code 489

Courtesy of MERCEDES-BENZ USA

Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on AIRmatic		AH32.22-P-1000-02GZ
	Remove/install
1	Lift vehicle on vehicle lift		AR00.60-P-1000GZ
2	Read out fault memory and vent AIRmatic using diagnostic system
		Empty and fill the AIRMATIC as per the specifications; the complete wheels must not be touching the ground. The air springs can otherwise be damaged and fail later.	AD00.00-P-2000-04A
3	Switch off ignition and store transmitter key outside of transmission range (min. 2 m)
4	Remove front section of fender liner in right fender at front		AR88.10-P-1310GQ
5	Release and disconnect electrical connection (1)
6	Detach pressure lines (2) from AIRmatic valve unit (4)	Installation:  Note colored marking on pressure lines (2) and AIRmatic valve unit (4). Otherwise the AIRmatic may be damaged.
		Pressure line of air suspension to valve unit	*BA32.22-P-1004-03B
		Socket wrench bit	Fig 2
		Knife	Fig 3
7	Seal opened connections	Record plug	Fig 4
8	Check pressure lines (2) and pressure line connections for damage	If a problem arises ↓ Repair pressure lie connections	AR32.22-P-2001-02GZ
		Socket wrench bit	Fig 2
		Knife	Fig 3
9	Remove bolts (3)	Screw/bolt, valve block to bracket	*BA32.22-P-1008-03B
10	Remove AIRmatic valve unit (4)
11	Install in the reverse order
	Check
12	Check AIRmatic for leaks		AR32.22-P-8100GZ

Fig 2: Identifying Socket Wrench Bit (211 589 00 09 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Knife (000 589 12 28 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA