Remove/Install Rear Air Spring - AR32.22-P-1500LWO

Model 238 

With Code 489 (AIR BODY CONTROL) 

MODIFICATION NOTES

03.04.2017	Expose electrical wiring harness and disconnect electrical connectors added.	Operation step 7, 8, 9, 10
03.04.2017	Remove shock absorber from spring link no longer applicable.	Operation step 11

Courtesy of MERCEDES-BENZ USA

Fig 1: Rear Air Spring Components Location - Model 238 With Code 489

Courtesy of MERCEDES-BENZ USA

	Risk of injury.  Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
	Notes on AIR BODY CONTROL		AH32.22-P-1000-03LWO
	Notes on repair work on suspension components		AH00.00-P-0100-01A
	Remove/install
1	Remove rear wheel		AR40.10-P-1102A
2	Empty air spring (4) using diagnostic system
		: Carefully fill air spring (4) according to specifications. The air spring (4) may otherwise be damaged and fail later.	AD00.00-P-2000-06LWO
3	Switch off ignition and store transmitter key outside of transmission range (min. 2 m)
4	Open mounting bars (3) of cover (1), unhook catch hooks (2) and remove cover (1)
5	Detach pressure line (7) from air spring (4) and close off	: Attach pressure line (7) carefully. Otherwise the plastic thread may be damaged Pressure line to air suspension	*BA32.22-P-1006-03H
		Torque tool set	Fig 4
		Record plug If the pressure line connections or the pressure lines (7) are damaged ↓ Repair pressure line connections (7) or pressure lines.	Fig 3
			AR32.22-P-2001-01LWO
		Knife	Fig 2
6	Disconnect electrical connector (8)
7	Unclip electrical wiring harness for electrical connector (8) from holder
8	Release rear fender liner in area of electrical connectors (9) and push to one side		AR88.10-P-1400LWE
9	Unclip electrical connectors (9) from holder (11) and disconnect
10	Unclip electric lines (10) from holder (11)
11	Carefully pull air spring (4) downwards by its upper plastic frame until the air spring (4) releases from the retaining clip	Do not completely compress or extend the air spring (4). Otherwise the air spring (4) may be damaged. The retaining clip is destroyed when the air spring (4) is removed. : The air spring (4) must engage in the retaining clip.
12	Remove air spring (4) downwards	Do not completely compress or extend the air spring (4). Otherwise the air spring (4) may be damaged. : The air spring (4) with the air spring centering (arrow) must be positioned correctly in the lower spring control arm (5).
13	Replace retaining clip		AR32.22-P-1500-02EW
	Check
14	Check condition of air spring (4)	The protective boot may not exhibit any pressure marks. Otherwise the movement of the spring will damage the spring bellows on the inside. If a problem arises ↓ Replace air spring (4).
15	Install in the reverse order
	Check
16	Check AIR BODY CONTROL for leak tightness		AR32.22-P-8101LWO

AIR SUSPENSION

Number	Designation			Model 238
BA32.22-P-1006-03H	Pressure line to air suspension	Front axle	Nm	2
		Rear axle	Nm	3,

Fig 2: Identifying Knife (000 589 12 28 00)

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Fig 3: Identifying Record Plug (129 589 00 91 00)

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

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