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 air filter housing.

- For vehicles with a diesel engine, remove the battery and the battery tray.

- Place lint free cloths on the transmission oil cooler and transmission to absorb leaking coolant.

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

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

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






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






Coolant must not drip into the transmission!

Installing






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

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

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

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






- For vehicles with a diesel engine, install the battery tray and the battery.

- Install the air filter housing.

- Check the coolant level and add if necessary.

- After repairing, check the transmission oil level and fill as necessary. Refer to => [ DSG(R) Oil Level, Checking ] DSG(R) Oil Level, Checking.

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