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)

• Pliers for spring-type clamps (VAS 5024 A)

Removing

• Observe notes for Direct Shift Automatic Transmission 02E => [ Notes for Direct Shift Automatic Transmission 02E ] Notes For Direct Shift Automatic Transmission 02E.

• Observe general repair notes for working on the transmission => [ General Repair Notes ] General Repair Notes.

• Additional work must be performed when disconnecting and reconnecting battery.

- Place selector lever in position "P".

- First determine whether a coded radio is installed. In this case, determine anti-theft coding.

- Disconnect battery Ground (GND) cable with ignition switched off.

• Observe safety precautions before disconnecting the battery.

- Remove power steering refill tank from battery console, do not kink hoses while doing this.

- Connect refill tank to lock carrier.

- Remove battery

- Disconnect intake hose - 1 - and connector - 2 - from Mass Air Flow (MAF) sensor.





- Remove bolts - 3 - and - 4 -.

- Remove air filter completely.

- Place lint-free cloth on to oil cooler and transmission to absorb exiting coolant.

- Clamp off hoses of transmission oil cooler using Hose Clamps Up to 25 mm dia. (3094).





- Open clamps - 1 - using (VAS 5024 A) and disconnect hoses from transmission oil cooler.

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





- Bolts must be replaced.

CAUTION!
Coolant must not drip into transmission.

- Remove transmission oil cooler - B - together with both O-rings - C - from transmission.

Installing

Installation is in reverse order of removal, note the following:

- Replace O-rings - C - of transmission oil cooler - B -.





- Install oil cooler - B -, pay attention to O-rings - C - when doing this.

- Install new bolts - A - and tighten to 20 Nm plus an additional 90° (1/4 turn).

- Connect battery and observe safety precautions after connecting battery.

- Check coolant level in cooling system.

CAUTION!
Do not start engine during coolant level test if there is still no transmission oil filling.

- After repairs, fill with transmission oil without replacing filter => [ Transmission Oil and Filter ] Transmission Oil and Filter.