Gear Oil Level In Transfer Case, Checking And Filling

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Special tools and workshop equipment required

Oil Collecting and Extracting Device VAG 1782
Hand Pump for Transmission Filling VAS 6617
Protective eyewear

Procedure

Transmission fluid temperature: approximately 20 °C (68 °F) (room temperature).
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.
Tightening specification, refer to GEAR OIL DRAIN AND INSPECTION PLUGS OVERVIEW .

NOTE:

General repair instructions, refer to REPAIR INFORMATION .

Clean working conditions for the automatic transmission. Refer to CLEAN WORKING CONDITIONS .

Replace the plug for the ATF check and fill hole.

-- Place the VAG 1782 under the transmission.

WARNING:

Danger of eye injury.

Wear protective eyewear.

-- Remove the drain plug -arrow A- from the center differential housing.

Fig 1: Locating Center Differential Housing Fill Plug And Drain Plug

Courtesy of AUDI OF AMERICA, LLC

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

If the level does not reach the bottom of the oil fill hole:

-- Install the adapter VAS 6617/6 and adapter VAS 6617/2 in the inspection and fill hole in the transfer case.

Fig 2: Installing Adapter VAS 6617/6 And Adapter VAS 6617/2 In Inspection And Fill Hole In Transfer Case

Courtesy of AUDI OF AMERICA, LLC

-- Connect the VAS 6617 and fill the transfer case with gear oil.

For the correct transmission fluid.

-- Wait 5 minutes.

NOTE:

The inside of the transfer case is divided into several oil chambers. The chambers must be filled equally.

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.

-- Remove the VAS 6617/6 from the transmission and let any extra oil drain out.

Specified value: The level is correct when the transmission fluid comes up to the bottom edge of oil filler hole. Fill the gear oil once more if necessary.

-- Tighten the new drain plug -arrow A- for the center differential housing.

Fig 3: Locating Center Differential Housing Fill Plug And Drain Plug

Courtesy of AUDI OF AMERICA, LLC