Procedures

Air supply unit, assembly overview





1 - Air supply unit

2 - Spring clamp

3 - Muffler
^ Installation location: In left wheel housing

4 - Air cleaner
^ Installation location: On the left A-pillar above the solenoid valve block

5 - Bracket

6 - Washer

7 - Bolt, 4 Nm

8 - Bolt, 4 Nm





9 - Connection piece, 2 Nm
^ Only unscrew with the vehicle raised and the air spring damper de-pressurized (otherwise there is a risk of injury due to lowering of the vehicle)

10 - Air line
^ Between solenoid valve block and air supply unit





11 - Intake hose connection piece

12 - Rubber bushings

13 - Spring

14 - Sleeve

15 - Self-locking nut, 4 Nm
^ Replace each time after removing

16 - Connector
^ For level control pump temperature sensor -G290-.

Level control pump temperature sensor -G290- is installed in the air supply unit. It cannot be exchanged.

17 - Connector
^ For drain valve

The drain valve is installed in the air supply unit. It cannot be exchanged.

18 - Connector
^ For connection to engine





Fig. 1 Plug-in system

- The lines are properly attached if only one of the marks -arrow- is visible.

Note:
^ Lines must not be shortened.
^ Detach lines by unfastening the connection piece.
^ Route air lines before removing protective transportation caps (detach immediately prior to making connection).