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– Remove air line -2- and then air line -1- from solenoid valve
block.
Caution
Air lines -3- and -6- must not be disconnected.
1 - black, internal air line between solenoid valve block and
compressor
2 - Green, air line toward right front air spring shock absorber
3 - Red, air line toward left rear air spring shock absorber
4 - violet, air line to left front air spring damper
5 - Blue, air line toward pressure reservoirs
6 - Yellow, air line toward right rear air spring shock absorber
– Pull air lines out of bracket at underbody.
– Remove nuts -arrows A- for air supply unit.
– Remove bolts -arrows B- and secure air supply unit with brack‐
et (second mechanic required).
– Lower air supply unit with bracket enough at front to remove
air supply unit -1-.
Caution
♦ Make absolutely sure that the solenoid valve block -2- is
moved from underbody as little as possible.
♦ Furthermore, the air lines must not be kinked or stretched
under any circumstance
Installing
Install in reverse order of removal. Note the following:
– First tighten nut -arrow A- and then nut -arrow B- to avoid ten‐
sion in rubber bushing.
Tightening specifications, refer to
⇒ “4.4 Air Supply Unit and Solenoid Valve Block Overview”, page
225 .
– Install right underbody trim, refer to ⇒ Rep. Gr. 50
– Place vehicle on wheels, refer to
⇒ “4 Positioning Vehicle on Hoist and Wheels”, page 10 .
If the air supply unit was replaced, then the Level Control System
Compressor Relay - J403- must also be replaced. Component
location: Refer to Wiring Diagrams.
Audi Q7 2007 ➤
Suspension, Wheels, Steering - Edition 01.2014
4. Pneumatic Level Control System 229