Removing and installing suspension strut (air spring strut) — AUDI

🧭 Before you start

Fits: Audi A6/A7 C7 (4G, 2011–2018); platform code 4X

• Special tools named: puller

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• The residual pressure valve (2) MUST NOT be loosened or removed.
• When removing air spring strut, take care not to damage protective boots on steering, drive shaft and air spring strut.

📋 Procedure

1. Position vehicle on lifting platform .
2. Remove body brace .
3. Unscrew bolts (arrows) and push washer fluid reservoir (1) slightly to one side.
4. Remove wheel trim; on light-alloy wheels, pull off trim cap (use puller in vehicle tool kit).
5. Remove wheel .

6. Clean area around air connection on air spring strut.
7. Unplug electrical connector (1).
8. Unscrew connection piece at residual pressure valve (2). This will allow air to escape.
9. Detach clip (arrow) and move pipes/wiring (3) clear. [Note: The residual pressure valve (2) MUST NOT be loosened or removed.]
10. Seal both connections. Take care to prevent dirt entering the connections.
11. Tie up wheel bearing housing with tensioning strap T10038(1), as shown in illustration.
12. Remove bolt (arrow) and detach bracket (1) for brake line and electrical wiring from wheel bearing housing.
13. Remove shock absorber fork .
14. Unscrew nuts (arrows) and take out air spring strut. [Note: When removing air spring strut, take care not to damage protective boots on steering, drive shaft and air spring strut.] [Note: Take care to prevent indentations forming in boot on air spring strut during assembly work.]
15. Start by attaching air spring strut to body.
16. Tighten new nuts (arrows) in diagonal sequence.
17. Fit wheel .
18. Charge air spring system .
19. Re-adapt reference position (default position) .

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