Automatic Transmission/Transaxle: Service and Repair

Removing and installing Tiptronic transmission





Tools

Removal
1. Disconnect battery.
2. Remove starter.
3. Remove rear wall cover in passenger compartment.





4. Fix crankshaft with special tool 9595. To do this, turn crankshaft until one of the bores U4, U5 or U6 in the pulley is aligned with the centering bore in the crankcase and special tool 9595 (short) can be inserted.
5. With special tool 9595 (long), hold converter in installation position.








Note If the special tool cannot be inserted, the crankshaft was not fixed properly. Check Step 4.





6. Install special tool 9596 and unscrew two of the six converter fastening screws with a 6-mm Allen socket insert (long).

Note For the remaining four fastening screws, remove special tool 9595, rotate crankshaft through a further 120' in each case (to pulley marking U4, U5 or 1.16) and fix again.





7. Pull off vacuum pipe (B) at switch-over valve.





8. Hold engine in installed position with special tools 10 - 222A and 9591/1 at transport shackle.
9. Remove diagonal braces and cross-member panel.
10. Remove stabilizer.
11. Remove silencers with catalytic converters.
12. Remove rear cross member W-brace).
13. Remove front cross member.
14. Uncouple drive shafts on the transmission side and protect shafts from damage (use pieces of hose with a diameter of approximately 30 mm).








15. Clamp shut coolant hoses (flow and return sides) with special tool 3094.
16. Place oil collection tray under the transmission.








17. Relieve spring-band clamps and pull off coolant hoses on flow and return sides.
18. Disconnect plug connection for multi-function switch.





19. Disconnect plug from transmission socket. To do this, turn plug anticlockwise and pull off.





20. Detach selector lever cable at deflection lever and at transmission support.
21. Place transmission jack under the transmission and fasten fixing strap.
22. Remove transmission support with left and right hydraulic mounts.





Note Fastening nut "C" (M12) must not be loosened. Otherwise, the transmission prop will be damaged.





23. Unscrew transmission Engine fastening screws. For screw No. 5, use polygon wrench (10 mm, part no. 999.571.052.02).
24. Pull transmission to the rear and lower it carefully.

Installation
Install in the reverse order.
1. Ensure perfect seating of dowel sleeves in crankcase.





2. Fix installed position of converter with special too] 9595 (long).








3. Carefully insert transmission and fasten to engine.
4. Install transmission supports with right and left hydraulic mounts.

Note For reasons of space, install the right transmission support first. To do so, move transmission to the left.

5. Remove dowel pins (special tool 9595).
6. Push vacuum pipe onto switch-over valve.





Note The two vacuum pipes must not be confused. Transmission cooling will otherwise be inadequate.

7. Check selector lever cable adjustment.
8. Check coolant level.




Tightening Torques