Remove/install air suspension bellows on front axle

AR32.22-W-2013NE

Remove/install air suspension bellows on front axle

19.3.15

MODEL

956

with CODE A1A (Front axle with air suspension)

Modification notes

10.2.15

Work procedure fully revised.

1

Air suspension bellows

2

Compressed air connector

3

Clamp

1

Air suspension bellows

4

Lugs

5

Upper air suspension bellows support

Pfeil

Cutouts

 Danger !

Risk of death caused by vehicle slipping or toppling off during lifting

Only lift vehicle at the lift support points specified by the vehicle manufacturer.

AS00.00-Z-0032-01A

 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

 Danger !

Risk of death from lowering vehicle when working between wheels and body. Risk of injury from pinching or crushing when working on the air suspension.

Testing and repair work between the wheel and wheel arch or in the wheel well should only be performed if the vehicle is secured using suitable support fixtures to prevent it from lowering.
Adjustment operations should only be performed from underneath the vehicle.
Use only suitable support fixtures to secure the vehicle frame or vehicle axles in order to prevent them from lowering.
If necessary, additionally use suitable support fixtures in order to prevent other moving vehicle parts that are in the working area from lowering, or use suitable retaining devices to prevent these parts from moving suddenly and without warning.
Secure areas with moving vehicle parts against unauthorized access.

AS32.22-Z-0001-01A



Special instructions for lifting and supporting vehicle

AH00.60-N-0100-01B



Remove

1

Secure vehicle at rear axle using wheel chocks to prevent it from rolling away

2

Raise front of vehicle and jack up at frame

 Raise the vehicle only until the air suspension bellows (1) can be removed.

3

Switch on ignition

4

Lower vehicle level fully at front axle using level control system operating unit

 In order to depressurize the air suspension bellows of the front axle.

5

Switch off ignition

6

Remove compressed-air connector (2)

AR42.10-W-0900NE

7

Remove clip (3)

8

Remove air suspension bellows (1)


Do not apply mechanical force to the air suspension bellows (1) or plastic piston.
The air suspension bellows (1) and the plastic piston can otherwise be damaged.



Install

9

Clean contact surfaces of air suspension bellows (1) on air suspension bellows carrier and on upper air suspension bellows support (5)

10

Insert air suspension bellows (1)


Do not apply mechanical force to the air suspension bellows (1) or plastic piston.
The air suspension bellows (1) and the plastic piston can otherwise be damaged.

 Make sure that the lugs (4) are seated in the recesses (arrow) of the upper air suspension bellows support (5).
Do not pull the air suspension bellows (1) apart; the plastic piston must not protrude beyond the rubber bellows.

11

Install clamp (3)

12

Attach compressed air connector (2)

AR42.10-W-0900NE



Check

13

Switch on ignition

14

Raise vehicle slightly at front axle using level control operating unit and lower again onto jack stands

 Lower only until the vehicle is resting on the jack stands again. The air suspension bellows of the front axle must still be pressurized for the leak test.
If necessary, for this purpose start the engine and completely fill the compressed air system at idle speed.

15

Switch off ignition

16

Check compressed air connector (2) for leaks

 Use commercially available leak detector spray.

17

Raise vehicle at front, remove jack stands and lower vehicle

18

Switch on ignition

19

Move vehicle to driving level using level control system operating unit

20

Switch off ignition

21

Remove wheel chocks at rear axle