Renewing front bonded rubber bushes for rear final drive — AUDI

🧭 Before you start

Fits: Audi A8 D4 (4H, 2010–2017)

• Special tools named: 3346
• Renewed: bonded rubber bush

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• Take care not to scratch side member.
• Screw nut 3346/3 onto spindle 3346/2 until subframe has been lowered by distance (a) = 4 cm.
• Safety goggles must be worn when drilling. — Apply drill (1) to bonded rubber bush (2), as shown in illustration, and drill out access hole in several stages.
• Before installing, apply assembly lubricant to bonded rubber bush where it contacts subframe Electronic parts catalogue.
• Position bonded rubber bush in subframe so that previously made marking (arrow) points exactly in direction of travel.

📋 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.] [Note: The front part of the subframe is lowered in order to renew the bonded rubber bush. The subframe does not have to be removed.]
4. ⚠ If vehicle is not secured, there is a risk of it slipping off the lifting platform. — Remove covers (1) and (2)General body repairs, exterior66Underbody trim; Removing and installing underbody trim.
5. Remove wheel spoiler (rear) (1)General body repairs, exterior66Wheel housing liner; Removing and installing wheel housing liner (rear).

6. If fitted, remove stone deflectors (1) to (3).
7. Place engine and gearbox jackV.A.G 1383 A under subframe (1) and support subframe.
8. Insert a suitable block of wood (2) under subframe (1).
9. Remove bolts (3) and (4).
10. Using spindle3346/2 with pressure bearing from assembly tool3301 and nut 3346/3, as shown in illustration, screw spindle approx. 1.5 cm into body. [Note: Screw nut 3346/3 onto spindle 3346/2 until subframe has been lowered by distance (a) = 4 cm.]
11. Lower subframe approx. 4 cm.
12. Remove bolt (2).
13. Press final drive upwards with engine and gearbox jackV.A.G 1383 A.
14. Insert thrust piece T40186/1 and spindle T10254/5 with nut T10254/4.
15. When removing and installing bonded rubber bush, make sure that spindle (4) does not contact threaded hole (3) in final drive. [Note: Drill bits of different diameters should be used to drill out in several stages.During the drilling procedure, ensure that the threaded hole (3) in the final drive is not damaged by the drill bit (if necessary cover the hole with a suitable object).]
16. ⚠ Safety goggles must be worn when drilling. — Apply drill (1) to bonded rubber bush (2), as shown in illustration, and drill out access hole in several stages.
17. If necessary, unscrew support T10205/13 from hydraulic pressVAS 6178 and screw in support with small internal diameter (arrow) in its place.
18. Apply special tools to front bonded rubber bush as shown in illustration.
19. ⚠ Safety goggles must be worn when drilling. — Lightly clamp new bonded rubber bush (2) horizontally in jaws of vice (1), as shown in illustration (use protective jaw covers and take care not to damage outer shell of bonded rubber bush).
20. Apply drill (3) to bonded rubber bush (2), as shown in illustration, and drill out access hole in several stages.
21. Apply a continuous marking (arrow) at 90° to the grooves. [Note: This marking is required for aligning the bush with the subframe.The slots are concealed by the tools when the bush is being installed.Clean contact surfaces on bonded rubber bushes and subframe with a suitable cleaning solution, such as brake cleaner.]
22. Before installing, apply assembly lubricant to bonded rubber bush where it contacts subframe Electronic parts catalogue.
23. Position bonded rubber bush in subframe so that previously made marking (arrow) points exactly in direction of travel.
24. Apply special tools to front bonded rubber bush as shown in illustration.
25. Pull bush into subframe until it makes contact with disc T40186/4. [Note: While pressing in the bush, make sure that the recess in the disc T40186/4 faces towards the vertical weld seams on the subframe (left-side in direction of travel); re-position the disc T40186/4 if necessary.If the paint on the subframe has been damaged when renewing the bushes, make good the damage with anti-corrosion coating, primer and black topcoat.]

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