Air Suspension Strut, Upper Control Arm And Level Control System Sensor Overview

Fig 1: Identifying Air Suspension Strut, Upper Control Arm And Level Control System Sensor Overview

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • 50 Nm + 90°
   • Always replace if removed.
2. Suspension strut (air suspension)
   • Removing and Installing, refer to AIR SUSPENSION STRUT, REMOVING AND INSTALLING .
3. Bracket
4. Bolt
   • 50 Nm + 90°
   • Always replace if removed.
5. Bolt
   • 5 Nm
6. Left Front Level Control System Sensor -G78- /Right Front Level Control Sensor -G289-
   • Removing and Installing, refer to Left Front Level Control System Sensor -G78- AND Right Front Level Control Sensor -G289-, REMOVING AND INSTALLING .
7. Bolt
8. Coupling Rod
9. Stabilizer Bar
10. Self-Locking Nut
    • 110 Nm
    • Always replace if removed.
11. Bolt
12. Lower Control Arm
    • Conical pin must be free of grease and oil.
    • If necessary, clean using dry rag, do not use cleaning agents.
13. Locking Plate
14. Bolt
    • M10: 50 Nm + 90°
    • M12: 90 Nm + 90°
    • Always replace if removed.
15. drive axle
16. Tie Rod
    • Conical pin must be free of grease and oil.
    • If necessary, clean using dry rag, do not use cleaning agents.
17. Self-Locking Nut
    • 90 Nm
    • Always replace if removed.
18. Wheel Bearing Housing
    • The tapered holes and the contact surfaces on the outer circumference of the wheel bearing must be free of oil, grease and preserving agent.
    • If necessary, clean using dry rag, do not use cleaning agents.
19. Self-Locking Nut
    • 500 Nm
    • Always replace if removed.
    • Before assembling, coat contact surface with Assembly Paste.
20. Self-Locking Nut
    • 85 Nm
    • Always replace if removed.
21. Self-Locking Nut
    • 150 Nm + 90°
    • Always replace if removed.
22. Bolt
    • Always replace if removed.
23. Self-Locking Nut
    • 110 Nm
    • Always replace if removed.
24. Upper Control Arm
    • Conical pin must be free of grease and oil.
    • If necessary, clean using dry rag, do not use cleaning agents.
25. Self-Locking Nut
    • 7 Nm
26. Self-Locking Nut
    • Always replace if removed.
27. Self-Locking Nut
    • Always replace if removed.
28. Air line
    • Colors: front left - purple; front right - green.
    • Air pipe line, servicing, refer to AIR LINE, SERVICING .
    • Replace connector piece if leaking, refer to CONNECTING PIECE, REPLACING .
29. Connector piece
    • 5 Nm
    • Always observe tightening specification!
    • Only remove if vehicle is raised and air spring damper is unloaded (otherwise, there is a risk of injury from lowering vehicle).
    • Service the air line if there are leaks, refer to AIR LINE, SERVICING or replace the connection CONNECTING PIECE, REPLACING .
    • Clean connections before loosening.
    • Air escapes when connections are unscrewed.
30. Bolt
    • 50 Nm + 90°
    • Always replace if removed.