Automatic Transmission Fluid Cooler and Lines Overview

Automatic Transmission Fluid Cooler and Lines Overview

• Clean working conditions for the automatic transmission. Refer to => [ Clean Working Conditions ] Clean Working Conditions.

• General Repair Instructions, refer to => [ Repair Information ] Repair Information.

• Seal any open lines and connections with a clean plug from the engine bung set (VAS 6122).

• Check ATF level after replacing ATF pipes. Refer to => [ ATF, Checking Level and Correcting ] ATF, Checking Level and Correcting

There is a risk of damaging the transmission.

• Remove all the plugs on the ATF pipes and on the transmission that were installed during removal.

• The ATF cooling function will not work and the transmission will be damaged if the plugs are forgotten.






1 ATF Cooler

• Integrated in the coolant cooler

2 O-ring

• Coat with ATF before inserting

3 ATF Pipe, Return

• From the ATF cooler to the transmission

• Before removal, mark the ATF pipes in relation to each other so they are not switched.

4 O-ring

• Coat with ATF before inserting

5 ATF Pipe, Supply

• From the transmission to the ATF cooler

• Before removal, mark the ATF pipes in relation to each other so they are not switched.

6 Bolt

• 5 Nm

• First insert the ATF pipes with new O-rings by hand as far as the stop

7 ATF Pipe, Supply

• From the transmission to the ATF cooler

• Before removal, mark the ATF pipes in relation to each other so they are not switched.

• Nuts on lines, 29 Nm

• The ATF pipes are secured to each other

8 Bolt

• 8 Nm

9 Bracket

10 ATF Pipe, Return

• From the ATF cooler to the transmission

• Before removal, mark the ATF pipes in relation to each other so they are not switched.

• Nuts on lines, 29 Nm

• The ATF pipes are secured to each other

11 Bolt

• 20 Nm

• First insert the ATF pipes with new O-rings by hand as far as the stop

• The retaining tab on the lower ATF pipe must lie on the transmission threads

• The retaining tab on the upper ATF pipe must lie on the lower one.

12 O-ring

• Coat with ATF before inserting