Remove/install the suspension strut

AR32.25-P-1017EWA

Remove/install the suspension strut

24.11.2014

MODEL

212

with CODE 489 (AIRMATIC)

MODEL

218

with CODE 489 (AIRMATIC)

Shown on vehicle except code M005 (4MATIC), except CODE 460 (Canada version) and except CODE 494 (USA version)

1

Torsion bar linkage

1a

Nut

2

Bracket

3

Line bracket

4

Cable tie

5

Bolts

6

Steering knuckle

7

Nut

8

Screw

9

Screw

10

Cover

40

Suspension strut

40a

Pressure line

Y51

Left front axle damping valve unit

Y52

Right front axle damping valve unit

Shown on vehicle with CODE M005 (4MATIC), except CODE 460 (Canada version) and except CODE 494 (USA version)

1

Torsion bar linkage

3

Line bracket

5

Bolts

6

Steering knuckle

12

Retaining clips

40

Suspension strut

MODEL 212.0 as of model year 2015 except CODE M005 (4MATIC) with CODE 460 (Canada version) or with CODE 494 (USA version)

6

Steering knuckle

8

Screw

11

Supporting strut

13

Bracket

MODEL 212.0 as of model year 2015 with CODE M005 (4MATIC) with CODE 460 (Canada version) or with CODE 494 (USA version)

5

Bolts

11

Supporting strut

14

Bracket

 Danger !

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 Danger !

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 range of the mechanism when moving components.

AS00.00-Z-0009-01A



Notes on AIRmatic

AH32.22-P-1000-02EW



Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

 

Remove/install

1

Place front wheels in straight-ahead position

2

Drain left or right suspension strut (40) using diagnostic system



AD00.00-P-2000-04A

 Installation:
The suspension strut (40) must be filled according to specification.
Otherwise, the suspension strut (40) may suffer initial damage and malfunction later at a later stage.

3.1

Switch off ignition and remove transmitter key from electronic ignition lock control unit

MODEL 212
with CODE 489 (AIRMATIC)
without CODE 889 (KEYLESS-GO)
MODEL 218
with CODE 489 (AIRMATIC)
without CODE 889 (KEYLESS-GO)

3.2

Switch off ignition and remove transmitter key or KEYLESS-GO start/stop button from electronic ignition lock control unit

MODEL 212
with CODE 489 (AIRMATIC)
with CODE 889 (KEYLESS-GO)
MODEL 218
with CODE 489 (AIRMATIC)
with CODE 889 (KEYLESS-GO)

4

Remove cover (10) from left or right suspension strut (40)

5

Detach pressure line (40a) from suspension strut (40).

 Installation:
When reinstalling the old suspension strut (40), make sure that the pressure line (40a) is carefully screwed on to the plastic thread.
Otherwise, if not screwed on properly, the plastic thread will be damaged thereby causing irreparable damage to the suspension strut (40).

 Seal pressure line (40a) with blind plugs during repair work.

When replacing the suspension strut (40):



Detach old pressure line connection to the pressure line (40a). To do this break open the clamping ring, detach pressure line connection and insert the pressure line (40a) up to the marking in the new pressure line connection. Pull back pressure line (40a) a short distance so that the peripheral retaining edges in the inside of the clamping ring engage in the line outer surface.

If pressure line (40a) or pressure line connection is damaged or leaky:



Repair pressure line (40a) or damaged pressure line connection.

AR32.22-P-2001-02SX

 Pressure line to front suspension strut/valve unit

*BA32.22-P-1011-03E

 Knife

*000589122800

 Socket wrench bit

*211589000900

6

Detach bracket (2) with pressure line connection from suspension strut (40)

7

Remove front wheel



AP40.10-P-4050EW

8

Unscrew nut (1a) and remove torsion bar linkage (1) from suspension strut (40)

 Counterhold ball stud using internal TORX.

 Nut, link rod to suspension strut

*BA32.20-P-1002-02P

9

Unclip electrical line of right front brake wear sensor from right line bracket (3)

When removing the right suspension strut (40).

10

Unclip electrical line of the left front axle rpm sensor or right front axle rpm sensor from corresponding line bracket (3)

11

Remove cable tie (4) on suspension strut (40)

MODEL 212
with CODE 489 (AIRMATIC)
without CODE M005 (4MATIC)
MODEL 218
with CODE 489 (AIRMATIC)
without CODE M005 (4MATIC)

 Installation: Observe installation position and replace cable tie (4).

 Pliers

*164589013700

12.1

Unclip line bracket (3) from suspension strut (40) and place to one side

MODEL 212
with CODE 489 (AIRMATIC)
without CODE M005 (4MATIC)
MODEL 218
with CODE 489 (AIRMATIC)
without CODE M005 (4MATIC)

12.2

Open retaining clip (12) and remove line bracket (3) from suspension strut (40)

MODEL 212
with CODE 489 (AIRMATIC)
with CODE M005 (4MATIC)
MODEL 218
with CODE 489 (AIRMATIC)
with CODE M005 (4MATIC)

13

Detach connector from left front-axle damping valve unit (Y51) or right front-axle damping valve unit (Y52)

14

Remove supporting strut (11).

MODEL 212.0
as of model year 2015
with CODE 460 (Canada version)
with CODE 489 (AIRMATIC)
MODEL 212.0
as of model year 2015
with CODE 489 (AIRMATIC)
with CODE 494 (US version)

MODEL 212.0
as of model year 2015
with CODE 460 (Canada version)
with CODE 489 (AIRMATIC)
without CODE M005 (4MATIC)
MODEL 212.0
as of model year 2015
with CODE 489 (AIRMATIC)
with CODE 494 (US version)
without CODE M005 (4MATIC)

AR33.25-P-0001EW

MODEL 212.0
as of model year 2015
with CODE 460 (Canada version)
with CODE 489 (AIRMATIC)
with CODE M005 (4MATIC)
MODEL 212.0
as of model year 2015
with CODE 489 (AIRMATIC)
with CODE 494 (US version)
with CODE M005 (4MATIC)

AR33.25-P-0001EWX

15

Remove bolts (5) from steering knuckle (6)

MODEL 212
with CODE 489 (AIRMATIC)
without CODE M005 (4MATIC)
MODEL 218
with CODE 489 (AIRMATIC)
without CODE M005 (4MATIC)

 Model 212, 218 except code M005 (4MATIC)

*BA32.25-P-1002-04M

16

Secure steering knuckle (6) to prevent it from tilting away


The brake hose and electrical lines may not be pulled.
Otherwise, the brake hose and the electrical lines may be damaged.

17.1

Unscrew nut (7) and pull out bolt (8)

MODEL 212
with CODE 489 (AIRMATIC)
without CODE M005 (4MATIC)
MODEL 218
with CODE 489 (AIRMATIC)
without CODE M005 (4MATIC)

 Installation: Replace bolt (8).
Tighten bolt (8) and nut (7) only after installation of supporting strut (11).

 MODEL 212.0
as of model year 2015
with CODE 460 (Canada version)
with CODE 489 (AIRMATIC)
without CODE M005 (4MATIC)
MODEL 212.0
as of model year 2015
with CODE 489 (AIRMATIC)
with CODE 494 (US version)
without CODE M005 (4MATIC)
Remove bolt (8) together with bracket (13).

 Model 212, 218 except code M005 (4MATIC)

*BA32.25-P-1001-04M

17.2

Remove bolts (5) from steering knuckle (6)

MODEL 212
with CODE 489 (AIRMATIC)
with CODE M005 (4MATIC)
MODEL 218
with CODE 489 (AIRMATIC)
with CODE M005 (4MATIC)

 MODEL 212.0
as of model year 2015
with CODE 460 (Canada version)
with CODE 489 (AIRMATIC)
with CODE M005 (4MATIC)
MODEL 212
as of model year 2015
with CODE 489 (AIRMATIC)
with CODE 494 (US version)
with CODE M005 (4MATIC)
Detach bracket (14).

 MODEL 212, 218 with code M005 (4MATIC)

*BA32.25-P-1005-04M

18

Remove bolts (9) from suspension strut tower

 MODEL 212, 218 with CODE 489 (AIRmatic)

*BA32.25-P-1003-04M

19

Remove suspension strut (40)

 Removal:
Carefully remove suspension strut (40).
Otherwise, the outer boot of the suspension strut (40) may be damaged.

 Installation:
The outer boot on the suspension strut (40) may not be pressed in during assembly, rectify any deformations.
Otherwise the movement of the spring will damage the spring bellows on the inside.

20

Check suspension strut (40) for damage

AR32.25-P-1017-02T

If damage is present:



Replace suspension strut (40).

 Danger !

Risk of injury caused by drilling gas-filled assemblies or components (noncombustible gases)

Wear safety glasses and a face mask.

AS00.00-Z-0006-01A

21

Dispose of damaged suspension strut (40)

If the removed suspension strut (40) is damaged and consequently has to be replaced.

22

Install in the reverse order



Check

23

Check AIRmatic for leaks

MODEL 212
with CODE 489 (AIRMATIC)

AR32.22-P-8100EW

MODEL 218
with CODE 489 (AIRMATIC)

AR32.22-P-8100EL

 Danger !

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

24

Perform engine test run and check AIRmatic for proper operation

25

Read out fault memory using the diagnostic system and delete



AD00.00-P-2000-04A

26

Perform wheel alignment check

AR40.20-P-0200EW

 Front axle torsion bar

Number

Designation

MODEL 212

MODEL 218

BA32.20-P-1002-02P

Nut, link rod to suspension strut

Nm

98

98

 Air suspension

Number

Designation

MODEL 212

MODEL 218

BA32.22-P-1011-03E

Pressure line to front suspension strut/valve unit

Nm

2 (+0,5)

2 (+0,5)

 Suspension struts

Number

Designation

MODEL 212.00/02/03/04/05/061/065/072/073/095/098/13/14/15/162/165/19/20/22/23/24/25/261/265/272/273/298 with CODE 489, MODEL 212.074/075/077/274/275/277 with CODE 489, except CODE 488

MODEL 218.30/32/33/35/361/362/365/373/90/92/93/95/961/965/973 with CODE 489, MODEL 218.374/375/974/975 with CODE 489, except CODE 488

BA32.25-P-1001-04M

Bolt, suspension strut to steering knuckle at top

M1445

Stage 1

Nm

100

100

Stage 2

°

90

90

 Suspension struts

Number

Designation

MODEL 212.00/02/03/04/05/061/065/072/073/095/098/13/14/15/162/165/19/20/22/23/24/25/261/265/272/273/298 with CODE 489, MODEL 212.074/075/077/274/275/277 with CODE 489, except CODE 488

MODEL 218.30/32/33/35/361/362/365/373/90/92/93/95/961/965/973 with CODE 489, MODEL 218.374/375/974/975 with CODE 489, except CODE 488

BA32.25-P-1002-04M

Bolt, suspension strut to steering knuckle at bottom

M1220

Stage 1

Nm

70

70

Stage 2

lösen

lösen

Stage 3

Nm

100

100

 Suspension struts

Number

Designation

MODEL 212.00/02/03/04/05/061/065/072/073/095/098/13/14/15/162/165/19/20/22/23/24/25/261/265/272/273/298 with CODE 489, MODEL 212.074/075/077/274/275/277 with CODE 489, except CODE 488

MODEL 212.067/08/090/091/093/094/097/099/167/168/211/267/28/291/293/294/297/299 with CODE 489, MODEL 212.076/092/276/292 with CODE 489, except CODE 488

BA32.25-P-1003-04M

Screw/bolt, suspension strut to body

Nm

33

33

 Suspension struts

Number

Designation

MODEL 218.30/32/33/35/361/362/365/373/90/92/93/95/961/965/973 with CODE 489, MODEL 218.374/375/974/975 with CODE 489, except CODE 488

MODEL 218.367/368/391/393/394/397/967/968/991/993/994/997 with CODE 489, MODEL 218.376/392/976/992 with CODE 489, except CODE 488

BA32.25-P-1003-04M

Screw/bolt, suspension strut to body

Nm

33

33

 Suspension struts

Number

Designation

MODEL 212.067/08/090/091/093/094/097/099/167/168/211/267/28/291/293/294/297/299 with CODE 489, MODEL 212.076/092/276/292 with CODE 489, except CODE 488

MODEL 218.367/368/391/393/394/397/967/968/991/993/994/997 with CODE 489, MODEL 218.376/392/976/992 with CODE 489, except CODE 488

BA32.25-P-1005-04M

Bolt, suspension strut to steering knuckle

M1470

Stage 1

Nm

120

120

Stage 2

°

90

90