Renewing front hydraulic bonded rubber bush in subframe: Audi A8 D4

🧭 Before you start

Fits: Audi A8 D4 (4H, 2010–2017)

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• Take care not to scratch side member.
• If vehicle is not secured, there is a risk of it slipping off the lifting platform. — Remove wheels .
• Screw nut 3346/3 onto spindle 3346/2 until subframe has been lowered by distance (a) = 4 cm.
• Mark installation position of hydraulic bonded rubber bush in relation to subframe (arrows) using a felt-tip pen or similar.
• If necessary, slacken cylinder and then press home again.Ensure that the bonded rubber bush remains straight during the first stage of installation; otherwise the outer ring may be damaged.

📋 Procedure

1. Position vehicle on lifting platform .
2. Secure vehicle to arms of lifting platform (arrow B) by attaching tensioning strap T10038 to striker (arrow A).
3. Place a piece of rubber foam (1) or similar between side member and tensioning strap T10038 and tighten tensioning strap T10038. [Note: Take care not to scratch side member.]
4. ⚠ If vehicle is not secured, there is a risk of it slipping off the lifting platform. — Remove wheels .
5. Remove covers (1) and (2)General body repairs, exterior66Underbody trim; Removing and installing underbody trim.

6. Remove wheel spoiler (rear) (1)General body repairs, exterior66Wheel housing liner; Removing and installing wheel housing liner (rear).
7. If fitted, remove stone deflectors (1) to (3).
8. Place engine and gearbox jackV.A.G 1383 A under subframe (1).
9. Insert a suitable block of wood (2) under subframe (1).
10. Remove bolt (3) or (4).
11. Using spindle3346/2 with pressure bearing from assembly tool3301 and nut3346/3, as shown in illustration, screw spindle approx. 1.5 cm into body on side opposite bonded rubber bush to be renewed. [Note: Screw nut 3346/3 onto spindle 3346/2 until subframe has been lowered by distance (a) = 4 cm.]
12. Prise locating element (1) off bonded rubber bush on alternate sides in area of retaining lugs.
13. Prise plastic insert (1) upwards off bonded rubber bush.
14. Mark installation position of hydraulic bonded rubber bush in relation to subframe (arrows) using a felt-tip pen or similar.
15. If necessary, unscrew small-diameter support (arrow) from hydraulic pressVAS 6178 and screw in support T10205/13 in its place.
16. Apply special tools to front bonded rubber bush as shown in illustration.
17. ⚠ Hold hydraulic pressVAS 6178 securely during pressing operation.The bonded rubber bush will come loose suddenly. Injuries can be caused if the tools and the bonded rubber bush are allowed to drop. — Prise locating element (1) off bonded rubber bush on alternate sides in area of retaining lugs (arrows).
18. Apply special tools to front bonded rubber bush as shown in illustration.
19. Align bonded rubber bush with markings made earlier and press in at the correct position until collar is flush with subframe bushing. [Note: If necessary, slacken cylinder and then press home again.Ensure that the bonded rubber bush remains straight during the first stage of installation; otherwise the outer ring may be damaged.]
20. Ends of rubber bead on bonded rubber bush must align with markings (arrows) made earlier on subframe. [Note: After renewing the bushes, make good any paint damage on the subframe with anti-corrosion coating, primer and black topcoat.]
21. Fit locating element on hydraulic bonded rubber bush.
22. Set down vehicle on its wheels .

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