Remove/install air suspension bellows on rear axle

AR32.22-P-2016FRX

Remove/install air suspension bellows on rear axle

31.07.2018

Model

290

with code 489 (AIR BODY CONTROL)

Shown on left side of vehicle

1

Electrical connectors

6

Spring control arm

2

Electrical lines

7

Shock absorber

3

Electrical connector

8

Electric line

4

Air suspension bellows

9

Bracket

5

Pressure line

 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

 Warning

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

Topical note

Notes on AIR BODY CONTROL

AH32.22-P-1000-03LWO

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Notes on repair work on suspension components

AH00.00-P-0100-01A



Remove

1

Remove rear wheel.

AR40.10-P-1102A

2

Release pressure from air suspension bellows (4) using vehicle diagnosis system.



AD00.00-P-2000-06FR

3

Switch off ignition and store transmitter key outside of transmission range (min. 2  m).

4

Release rear fender liner in area of electrical connectors (1) and push to the side.

AR88.10-P-1302FR

5

Disconnect electrical connectors (1).

6

Unhook electric lines (2) from holder and place to one side.

7

Remove pressure line (5) on air suspension bellows (4) and seal openings using suitable stop plugs.

 Record plug

*129589009100

8

Remove trim at spring link (6).

9

Remove shock absorber (7) at spring link (6) and push outward in lower area.

AR32.25-P-0110FRX

10

Disconnect electrical connector (3).

11

Unhook electric line (8) from holder (9).

12

Carefully pull air suspension bellows (4) downward on their upper plastic frame until air suspension bellows (4) release from retaining clip.


Do not completely compress or extend air suspension bellows (4).
Otherwise, damage will occur to air suspension bellows (4).

 The retaining clip is destroyed during removal of the air suspension bellows (4).

13

Remove air suspension bellows (4) toward rear.


Carefully remove air suspension bellows (4).
Otherwise, the protective boot of the air suspension bellows (4) will be damaged.

14

Remove retaining clip.

AR32.22-P-1500-02FR



Check

15

Check condition of air suspension bellows (4).


There must not be any intrusions on the protective boot.
Otherwise, the air suspension bellows (4) will be damaged by the spring motion.

In the event of a problem,



Replace air suspension bellows (4).



Install

16

Install new retaining clip.

AR32.22-P-1500-02FR

17

Position air suspension bellows (4) with centering (arrow) at spring link (6).


Do not completely compress or extend air suspension bellows (4).
Otherwise, damage will occur to air suspension bellows (4).

18

Position air suspension bellows (4) at retaining clip.


Do not completely compress or extend air suspension bellows (4).
Otherwise, damage will occur to air suspension bellows (4).

 The air suspension bellows (4) must engage in the retaining clip.

19

Hook electrical line (8) into bracket (9).

20

Connect electrical connector (3).

21

Attach shock absorber (7) to spring link (6).

AR32.25-P-0110FRX

22

Attach trim to spring link (6).

23

Remove all stop plugs.

24

Attach pressure line (5) to air suspension bellows (4).


The thread on the connection for the pressure line (5) may not be damaged.
Otherwise, leaks will occur.

 Pressure line to air suspension

*BA32.22-P-1007-03J

If thread is damaged,



Repair connection of pressure line (5).

AR32.22-P-2001-01FR

 Box wrench bit

*140589000300

 Box wrench bit

*001589000300

 Knife

*000589122800

25

Hook electric lines (2) into holder.

26

Connect electrical connectors (1).

27

Install rear fender liner.

AR32.25-P-0110FRX

28

Attach rear wheel.

AR40.10-P-1102A

29

Build up pressure in air suspension bellows (4) using vehicle diagnosis system.



AD00.00-P-2000-06FR


Build up pressure in air suspension bellows (4) as per specifications.
Otherwise, the air suspension bellows (4) will suffer initial damage and later fail.

30

Check AIR BODY CONTROL in area of air suspension bellows (4) for leak tightness.

AR32.22-P-8101FRX

 Air suspension

Number

Designation

Model 290

BA32.22-P-1007-03J

Pressure line to air suspension

Nm

2