Torque Converter: Service and Repair

Removing and installing torque converter





Preliminary work

Preliminary work for torque converter

1. Remove Tiptronic gears.

Installing torque converter





Torque converter

1. Clean emerging oil off converter bell housing.

Caution:
ATF pump can be damaged if not installed correctly.
^ Risk of shearing off drivers on ATF pump pinion

-> Precisely align cut-outs on the converter hub with the drivers on the ATF pump pinion
-> Install the converter slowly and carefully

2. Before installing the torque converter, align it in such a way that the cut-outs on the converter match those on the driver -arrows-.





ATF pump driver - converter hub

3. Slowly push torque converter as far as it will go onto the transmission shaft. When doing so, make sure that the converter hub is still aligned with the ATF pump driver.

Information:
^ Ensure that converter is seated correctly.

4. The converter is installed at the correct position when the special tool locating pins 95950 can be inserted through the opening in the converter bell housing in front of the converter -inset-.





Installation position of torque converter

Caution:
Leaks due to incorrect assembly sequence of torque converter
^ Leaks after a new sealing ring was fitted
^ Leaks following installation of the torque converter

-> Observe installation instructions

5. When sliding in the torque converter -1-, the sealing lip of the shaft sealing ring can bend over because of a ridge on the torque converter -1-. -bottom arrow-





Sealing lip bent in

6. Pull torque converter -1- out by approx. 5 mm. This moves the shaft sealing ring back into its correct installation position.





Positioning sealing lip

7. Push torque converter as far as it will go onto the transmission shaft.

Information:
^ Ensure that converter is seated correctly.

8. The converter is installed at the correct position when the special tool locating pins 95950 can be inserted through the opening in the converter bell housing in front of the converter -inset-.





Installation position of torque converter

Subsequent work

Reworking the torque converter

1. Install Tiptronic transmission.
2. Check and if necessary, top up the ATF.