Transmission Cooler: Service and Repair

Transmission Oil Cooler

Special tools, testers and auxiliary items required

• Hose Clamps up to 25 mm Dia. (3094)

• Torque Wrench (5-50 Nm) (V.A.G 1331)

• Engine Bung Set (VAS 6122)

Removing

- Move the selector lever into the "P" position.

- Remove the battery and the battery tray.

- Place a lint free cloth under the transmission oil cooler on the transmission to absorb any leaking coolant.

• When the engine is warm, the cooling system is under pressure.

• Place a cloth over the cap on the coolant expansion tank and carefully open it before removing the coolant hoses.

- Clamp off the coolant hoses using hose clamps up to 25 mm dia. (3094) and remove the hoses from the transmission oil cooler.






- Seal the coolant hoses and connections with plugs from the engine bung set (VAS 6122).

- Remove the bolts - A - and the transmission oil cooler - B -.






The coolant must not drip into the transmission!

Installing

- Replace the transmission oil cooler O-rings - C -.






- Install the transmission oil cooler - B -, while doing this, pay attention to the O-rings - C -.

- Tighten the new bolts - A - to 20 Nm + 90° (1/4) additional turn.

- Install the coolant hoses to the transmission oil cooler and remove the hose clamps up to 25 mm dia. (3094).






- Install the battery tray and the battery.

- Check the coolant level and fill, as necessary.

- After repairing, check the transmission oil level and fill as necessary. Refer to => [ Transmission Oil Level, Checking and Filling ] Transmission Oil Level, Checking and Filling.

Do not start the engine during the coolant level test if the transmission oil has not been filled yet.