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 eyewear

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 4-column shop hoist or over a work pit so it is completely level.

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

• Gear oil temperature at approximately 20 °C (68 °F) (room temperature).

• Tightening specification, refer to => [ Center Differential Housing Overview ] Center Differential Housing Overview.

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

• Automatic transmission clean working conditions, refer to => [ Clean Working Conditions ] .

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

Danger of eye injury.

• Wear protective eyewear.

- Remove the locking bolt - arrow - on the side of the center differential housing.






• 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 Parts Catalog.

- Fill the transfer case with gear oil slowly and evenly over a period of 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.

Tightening specification, refer to => [ Center Differential Housing Overview ] Center Differential Housing Overview.

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