Remove/Install Front Suspension Strut - AR32.25-P-1017LWQ

Model 238 

With Code 489 (AIR BODY CONTROL) 

Shown Except Code M005 (4MATIC) 

Fig 1: Front Suspension Strut Components Location - Model 238 With Code 489

Courtesy of MERCEDES-BENZ USA

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 AIR BODY CONTROL		AH32.22-P-1000-03LWO
Notice	Notes on handling, transport and storage of composite brake disks		AH42.10-P-9406-12LF
Notice	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
	Notes on repair work on suspension components		AH00.00-P-0100-01A
	Remove/install
1	Relieve pressure in AIR BODY CONTROL system using the diagnostic system
			AD00.00-P-2000-06LWO
2	Remove front wheel		AR40.10-P-1102A
3	Disconnect electrical connector (1) at suspension strut (2)
4	Remove guide (3) from suspension strut (2) and place to one side with lines attached
5	Unhook brake hose (4) from brackets on suspension strut (2)
6	Remove suspension strut (2) from spring control (5) arm	: Bolt (6) must be inserted from the rear towards the front. Otherwise the brake or the rim may be damaged. Nut, suspension strut to spring control arm	*BA32.25-P-1002-04P
7	Secure steering knuckle (7) against falling down
8	Remove upper transverse control arm (8) from steering knuckle (7)		AR33.20-P-0500LWO
9	Remove cover (9)	When removing the right suspension strut (2).
10	Remove maintenance flap (10)	When removing the left suspension strut (2).
11	Remove pressure line connection (11) from suspension strut (2)	: The thread on the compressed air line connection (11) may not be damaged. Otherwise, leaks will occur. Pressure line to air suspension	*BA32.22-P-1006-03H
		Torque tool set	Fig 5
		Torque wrench If the thread is damaged ↓ Repair compressed air line connection (11).	Fig 2
			AR32.22-P-2001-01LWO
		Knife	Fig 3
12	Seal compressed air line (11) and opening on suspension strut using suitable stop plug	Record plug	Fig 4
13	Disconnect electrical connections (13)
14	Unscrew nuts (12)	Nut, strut to body	*BA32.25-P-1001-04P
15	Remove suspension strut (2) downwards	Carefully remove suspension strut (2). Otherwise the suspension strut joint can be damaged by the spring control arm (5). When extending suspension strut (2), do not tension the brake hose (4). Otherwise the brake hose (4) may be damaged.
	Check
16	Check condition of suspension strut (2)	If a problem arises ↓ Replace suspension strut (2).
17	Measure length of new suspension strut (2) and compare dimension with value in leaflet	When replacing suspension strut (2). If a problem arises ↓ Do not use suspension strut (2) and order a suitable suspension strut (2).
18	Check suspension strut link on spring control arm (5) for condition and wear	If a problem arises ↓ Replace spring link (5). Model 238 with code 489 (AIR BODY CONTROL) except code M005 (Vehicles with 4MATIC/all-wheel drive)	AR33.15-P-0170LWO
		Model 238 with code 489 (AIR BODY CONTROL) with code M005 (Vehicles with 4MATIC/all-wheel drive)	AR33.15-P-0170LWQ
19	Install in the reverse order
	Check
20	Read out and erase fault memory using the diagnostic system
			AD00.00-P-2000-06LWO
21	Check AIR BODY CONTROL for leak tightness		AR32.22-P-8101LWO
22	Check headlamp adjustment	When replacing the suspension strut (2) or the spring control arm (5).
			AP82.10-P-8260J

Fig 2: Identifying Torque Wrench (001 589 86 21 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

Fig 5: Identifying Torque Tool Set (003 589 05 09 00)

Courtesy of MERCEDES-BENZ USA