Remove/install air spring

AR32.22-P-1500FR

Remove/install air spring

29.01.2018

Model

257

with code 489 (AIR BODY CONTROL)

1

Electrical connectors

6

Spring control arm

2

Electrical lines

7

Shock absorber

3

Electrical connector

8

Electric line

4

Air spring

9

Bracket

5

Pressure line

 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

Relieve pressure from air spring (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 fender liner at rear in area of electrical connectors (1) and push to one side

AR88.10-P-1302FR

5

Disconnect electrical connectors (1) and unhook electric lines (2) from holder

6

Remove pressure line (5) from air spring (4) and seal openings with suitable stop plugs

 Record plug

*129589009100

7

Remove cover at spring link (6)

8

Disconnect electrical connector (3) and unhook electric line (8) from holder (9)

9

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.

10

Remove air spring (4) downwards


Remove the air spring (4) carefully.
Otherwise the protective boot for the air spring (4) may be damaged.



Check

11

Check condition of air spring (4)


There must not be any intrusions on the protective boot.
Otherwise the movement of the spring will damage the spring bellows on the inside.

If a problem arises



Replace air spring (4).



Install

12

Replacing retaining clip

AR32.22-P-1500-02FR

13

Position the air spring (4) with the air spring centering (arrow) onto the spring link (6)


Do not completely compress or extend the air spring (4).
Otherwise the air spring (4) may be damaged.

14

Position air spring (4) on retaining clip and latch into place


Do not completely compress or extend the air spring (4).
Otherwise the air spring (4) may be damaged.

15

Hook electric line (8) onto holder (9) and connect electrical connector (3)

16

Install cover at spring link (6)

17

Remove all stop plugs

18

Mount pressure line (5) to air spring (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-1006-03I

 Box wrench bit

*001589000300

If the thread is damaged



Repair connection for pressure line (5).

AR32.22-P-2001-01FR

 Knife

*000589122800

19

Hook electric lines (2) into holder and connect electrical connectors (1)

20

Install fender liner at rear

AR88.10-P-1302FR

21

Install rear wheel

AR40.10-P-1102A

22

Build up pressure in air spring (4) using vehicle diagnosis system



AD00.00-P-2000-06FR


Build up pressure in air spring (4) as specified.
Otherwise, the air spring (4) may suffer initial damage and malfunction at a later stage.



Check

23

Check AIR BODY CONTROL for leak tightness

AR32.22-P-8101FR

 Air suspension

Number

Designation

Model 257

BA32.22-P-1006-03I

Pressure line to air suspension

Nm

2