Transfer Case Gear Oil, Filling After Repair

Transfer Case Gear Oil, Filling after Repair

Special tools, testers and auxiliary items required

• Oil collecting and extracting device (V.A.G 1782)

• Protective goggles

Work Sequence:

• The gear oil in the transfer case was drained.

• The center differential housing was removed and all of the gear oil drained.

• Move the vehicle onto a four-pillar shop hoist or over a work pit so that it is absolutely horizontal.

• The transmission must be still for at least 15 minutes to make sure the oil settles internally.

• Transmission fluid temperature: approximately 20 °C (68 °F) (room temperature).

• Tightening specification, refer to => [ Center Differential Housing Overview ] Final Drive, Differential (0B6A Automatic Transmission).

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

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

- Place the (V.A.G 1782) under the transmission.


Danger of eye injury.

• Wear protective goggles.

- Remove the sealing plug - arrow - on the side of the transfer case.






• Do not start the engine or tow the vehicle if there is no gear oil in the transmission.

• For the correct transmission fluid refer to the Electronic Parts Catalog (ETKA).

- Fill the transfer case with gear oil slowly and evenly over a period of at least 5 minutes until gear oil flows out at the lower edge of the filling opening.

• A filling time of at least 5 minutes is required so that the internal oil level between the center differential and oil fill space can equalize.

- Repeat the filling process in steps every 15 seconds with 50 ml of gear oil until the transfer case stops accepting gear oil.

• The inside of the transfer case is divided into several oil chambers. The waiting period is necessary to ensure they are all filled evenly.

• Replace the drain plug and gasket.

• Specified value: The level is correct when the transmission fluid comes up to the bottom edge of oil filler hole.

- Tighten the new sealing plug.

• It is not necessary to check the oil level again at this stage.