Remove/Install Air Suspension Valve Unit - AR32.22-P-2015LWO

Model 238 

With Code 489 (AIR BODY CONTROL) 

Courtesy of MERCEDES-BENZ USA

Shown on model 238.4 

	Notes on AIR BODY CONTROL		AH32.22-P-1000-03LWO
	Remove
1	Release pressure from air suspension using diagnostic system
			AD00.00-P-2000-06LWO
2	Remove left front engine compartment lining		AR61.20-P-1105LWE
3	Loosen left front fender liner in area of bumper and push to one side		AR88.10-P-1300LWE
4	Release and disconnect electrical connection (2)
5	Mark positions of pressure line connections (3) relative to valve unit (6)
6	Remove pressure line connections (3) at valve unit (6) and close off openings using suitable stop plugs	Record plug	Fig 2
7	Remove bolts (4) and remove valve unit (6) downwards
	Check
8	Check elastomer bearings (5) for hardening and damage	If there are problems ↓ Replace corresponding elastomer bearings (5).
	Install
9	Position valve unit (6) and tighten bolts (4)	Bolt, valve unit to bracket for compressor unit	*BA32.22-P-1003-03H
10	Remove all stop plugs
11	Attach pressure line connections (3) to valve unit (6)	The threads of pressure line connections (3) must not be damaged. Otherwise leaks can occur. Pay attention to marking. Pressure line to compressor/valve unit (P)	*BA32.22-P-1004-03H
		Torque tool set	Fig 4
		Torque wrench If the threads are damaged ↓ Repair pressure line connections (3).	Fig 1
			AR32.22-P-2001-01LWO
		Knife	Fig 3
12	Connect and lock electrical connector (2)
13	Build up pressure of air suspension using vehicle diagnosis system
			AD00.00-P-2000-06LWO
	Check
14	Read out and erase fault memory using the diagnostic system
			AD00.00-P-2000-06LWO
	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
15	Perform an engine test run and check air suspension for proper operation
16	Check valve unit (6) for leaktightness		AR32.22-P-8101LWO
	Install
17	Attach left front fender liner		AR88.10-P-1300LWE
18	Install left front engine compartment lining		AR61.20-P-1105LWE

Fig 1: Identifying Torque Wrench (001 589 86 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

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

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Torque Tool Set (003 589 05 09 00)

Courtesy of MERCEDES-BENZ USA