Gear Oil, Draining And Filling

• The gear oil in the bevel box must only be drained for a repair. Changing the oil is not intended.
• Refer to the Parts Information for the gear oil specification.

Special tools and workshop equipment required 

• If necessary, Oil Filler - Adapter 6:VAS 6262/6  or Oil Filler - Adapter:VAS 6262/7 

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• Charging Device for AWD Clutch Coupling 2:VAS 6291A 

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• Charging Device For AWD Clutch Coupling 2 - Adapter 3:VAS 6291/3 

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• Used Oil Collection and Extraction Unit:SMN372500 

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• Refer to the Parts Information for the correct original transmission fluid container, gear oil; part number.

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• Protective Eyewear
• Acid-Resistant Safety Gloves

Draining

• Replace the oil drain plug and fluid filler hole plug after removal.

• Move the vehicle onto a four-column workshop hoist or over a work pit so it is completely level.
• The engine is off.

-- Remove the noise insulation. Refer to OVERVIEW - NOISE INSULATION .

-- Place the Used Oil Collection and Extraction Unit:SMN372500  under the transmission.

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-- Remove the oil drain plug -2- and drain the gear oil.

-- Tighten the new oil drain plug.

Filling

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-- If necessary, remove the nuts -1- and remove the right drive axle heat shield.

-- Route the hose for the Charging Device for AWD Clutch Coupling 2:VAS 6291A  through the engine/motor compartment.

-- Remove the oil filler hole plug -1-.

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-- Install the Charging Device For AWD Clutch Coupling 2 - Adapter 3:VAS 6291/3  until it stops.

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-- Engage the elbow on the Charging Device for AWD Clutch Coupling 2:VAS 6291A  with the Charging Device For AWD Clutch Coupling 2 - Adapter 3:VAS 6291/3 

• The hose must not sag.

-- Make sure the valve -arrow- is closed.

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-- Attach the fluid container -1- to the Charging Device for AWD Clutch Coupling 2:VAS 6291A  .

• The Oil Filler - Adapter 6:VAS 6262/6  must also be used on some fluid containers.

-- Open the valve -arrow- and hold up the fluid container as shown.

• The bevel box is now filled.
• When the bevel box is filled correctly, fluid comes out at the Charging Device For AWD Clutch Coupling 2 - Adapter 3:VAS 6291/3  .

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-- If the gear oil leaks out at the Charging Device For BorgWarner Coupling 2 - Adapter 3:VAS 6291/3  , hold the oil container in such a way so that any excess oil flows back into the container.

-- When the fluid stops flowing back, remove the Charging Device for AWD Clutch Coupling 2:VAS 6291A  .

-- Install the >>old<< oil filler plug and lightly tighten it.

-- Start the engine, engage a gear and let the transmission turn for approximately two minutes.

-- Switch off the engine and remove the oil filler hole plug.

-- Check the oil level; if necessary, fill with gear oil up to the lower edge of the filler hole again.

-- Tighten the new fluid filler plug.

• Carefully remove leaking oil from the bevel box.

Tightening Specifications

Fig 1: Fluid Filler Plug - Tightening Specifications

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• Refer to OVERVIEW - NOISE INSULATION .
• Refer to DRIVE AXLE HEAT SHIELD, REMOVING AND INSTALLING .