Remove/install air suspension compressor

AR32.22-P-2001EQ

Remove/install air suspension compressor

15.11.2019

Model

293

2

Electrical connectors

6

Pressure line connection

3

Bracket

7

Nut

4

Bracket

8

Bracket

5

Air intake hose

A9/1

AIR BODY CONTROL compressor

1

Threaded rod

2e

Protective sleeve

2a

Elastomer bearing

2f

Elastomer bearing

2b

Washer

2g

Protective sleeve

2c

Protective sleeve

A9/1

AIR BODY CONTROL compressor

2d

Compression spring

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Notes on level control

AH32.22-P-1001-02LWT



Remove

1

Remove left front wheel.

AR40.10-P-1102A

2

Release pressure of air suspension 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

Remove front fender liner at left.

AR88.10-P-1300LW

5

Remove front engine compartment lining.

AR61.20-P-1105EQ

6

Release and disconnect electrical connectors (2) on AIR BODY CONTROL compressor (A9/1).

7

Unhook holder (3) on AIR BODY CONTROL compressor (A9/1).

8

Open holder (4) and unhook air intake hose (5).

9

Detach air intake hose (5) from AIR BODY CONTROL compressor (A9/1) and seal openings using suitable stop plugs.

 Record plug

*129589009100

10

Remove pressure line connection (6) from AIR BODY CONTROL compressor (A9/1) and seal openings using suitable stop plugs.

 Record plug

*129589009100

11

Unscrew nuts (7) and remove AIR BODY CONTROL compressor (A9/1) downwards.



Check

12

Check holder (8) for damage.

In the event of a problem,



install new holder (8).

AR32.22-P-2009LWX

13

Check elastomer bearings (2a) for damage and wear.

In the event of a problem,



replace elastomer bearings (2a).

 The raised section of the elastomer bearings (2a) must face downward. Make sure that the elastomer bearings (2a) are seated correctly.



Install

14

Place washers (2b) and protective sleeve (2e) onto elastomer bearings (2a).

15

Place elastomer bearings (2f) onto protective sleeves (2g).

 The outer lips of the elastomer bearings (2f) must enclose the washers of the protective sleeves (2g) around the entire circumference.

16

Fit compression springs (2d) onto protective sleeves (2c, 2g).

17

Position protective sleeves (2c, 2g), together with compression springs (2d), into elastomer bearings (2a).

18

Position AIR BODY CONTROL compressor (A9/1) and fit nuts (7).

 Nut, compressor mounting to compressor unit bracket

*BA32.22-P-1001-03G

19

Remove all stop plugs.

20

Attach pressure line connection (6) to AIR BODY CONTROL compressor (A9/1).

Note on calculation of tightening torque when using insertion or socket tools with various effective lengths

AH00.00-P-0015-01CW


The thread on pressure line connection (6) must not be damaged.
Otherwise, leaks will occur.

 Pressure line to compressor/valve unit (P)

*BA32.22-P-1004-03G

 Box wrench bit

*140589000300

If thread is damaged,



Repair pressure line connection (6).

AR32.22-P-2001-01EQ

 Box wrench bit

*140589000300

 Knife

*000589122800

21

Attach air intake hose (5) to AIR BODY CONTROL compressor (A9/1).

22

Hook in air intake hose (5) and close holder (4).

23

Hook holder (3) onto AIR BODY CONTROL compressor (A9/1).

24

Connect electrical connectors (2) to AIR BODY CONTROL compressor (A9/1) and lock.

25

Replace AIR BODY CONTROL relay.

When replacing AIR BODY CONTROL compressor (A9/1).

 The AIR BODY CONTROL relay is located in the engine fuse and relay module (engineK40/8).

26

Build up pressure in AIR BODY CONTROL compressor (A9/1) using vehicle diagnosis system.



AD00.00-P-2000-06FR


Build up air suspension pressure as per the specifications.
Otherwise, parts of the air suspension will suffer initial damage and malfunction at a later stage.



Check

 Warning

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

27

Start engine and check air suspension for proper operation.

28

Check all compressed-air connections at AIR BODY CONTROL compressor (A9/1) for leak tightness.

AR32.33-P-0021EQ



Install

29

Install front engine compartment lining.

AR61.20-P-1105EQ

30

Install front fender liner at left.

AR88.10-P-1300LW

31

Mount left front wheel.

AR40.10-P-1102A

 Air suspension

Number

Designation

Model 293

BA32.22-P-1001-03G

Nut, compressor mounting to compressor unit bracket

Nm

3

 Air suspension

Number

Designation

Model 293

BA32.22-P-1004-03G

Pressure line to compressor/valve unit (P)

Nm

3,5