Removing and installing steering rack - hydraulic power steering rack — AUDI

🧭 Before you start

Fits: Audi A5 (8T, 2007–2016), Audi A5 Cabriolet (8F), Audi A4 B8 (8K, 2007–2015)

• Special tools named: puller

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• Use adhesive tape that can be completely removed afterwards without leaving marks.Do not turn steering wheel while performing repair work, as otherwise airbag coil connector and return ring with slip ring F138 could be damaged.
• Unscrew nut (1) on joint pin (2) of track rod ball joint until it is flush with end of thread. Counterhold if necessary when loosening.
• Make sure the two lever arms of the puller are parallel when maximum force is exerted; adjust as necessary.

📋 Procedure

1. Raise vehicle on lifting platform.
2. To prevent unintentional turning, secure steering wheel in straight-ahead position with adhesive tape (arrow). [Note: Use adhesive tape that can be completely removed afterwards without leaving marks.Do not turn steering wheel while performing repair work, as otherwise airbag coil connector and return ring with slip ring F138 could be damaged.]
3. Clamp off suction hose (1) and return hose (2) using hose clamps3094.
4. ⚠ Hose clamps up to 25 mm3094 must not be applied at any point near the non-return valve in the return hose (2). The non-return valve will otherwise be damaged.The non-return valve is located in the return hose (2) between the hose clips (arrows). — Remove front wheels.
5. Unscrew nut (1) on joint pin (2) of track rod ball joint until it is flush with end of thread. Counterhold if necessary when loosening.

6. Press track rod ball joint off wheel bearing housing using ball joint puller T40010 A. Then remove nut. [Note: Make sure the two lever arms of the puller are parallel when maximum force is exerted; adjust as necessary.]
7. Remove noise insulation General body repairs, exterior66Noise insulation; Exploded view - noise insulation.
8. Unscrew nut (3) from rubber mounting (4).
9. Remove anti-roll bar (1).
10. Remove cross brace (4)Removing and installing subframe cross brace (A4, A5 Coupé, A5 Sportback).
11. Remove cross brace (4)Removing and installing subframe cross brace (A5 Cabriolet).
12. ⚠ Risk of damage to running gear components.Never place the vehicle on its wheels if the subframe mounting, steering rack or subframe cross brace is not correctly installed! The vehicle must not be supported on the subframe or the subframe cross brace (e.g. using a trolley jack or similar)! — Remove bolts (4) and detach pressure line (3).
13. Detach return line (2). If necessary, use a screwdriver to lever return line (2) out of power steering rack.
14. Seal off connections on power steering rack with clean plugs.
15. Seal off pressure line (3) and return line (2) with a clean plug.
16. Remove bolt (arrow).
17. Detach steering column (1) from steering rack (2).
18. Unplug connector (1) and detach from bracket (2).
19. Unplug connector (1) and detach from servotronic solenoid valve N119(2).
20. Unscrew bolts (2) and remove nuts (3).
21. Guide steering rack (5) slightly to right and take out.
22. Apply a small quantity of hydraulic fluid to seals (1) and (5) before fitting.
23. Fully insert pressure line (3) and return line (2) when installing.
24. Install anti-roll bar (1).
25. Screw in both bolts (2) loosely at first, then tighten.
26. Install cross brace (4)Removing and installing subframe cross brace (A4, A5 Coupé, A5 Sportback).
27. Install cross brace (4)Removing and installing subframe cross brace (A5 Cabriolet).
28. Remove hose clamps3094 from suction hose (1) and return hose (2).
29. Bring power steering rack into centre position .
30. Bleed steering system .
31. Check hydraulic fluid level .
32. Check all opened lines for leaks .
33. Check and adjust wheel alignment .

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