Replacing the rear axle differential ventilation line (AWD)

Special tools required: 

• 2 407 851
• 23 4 150

Preliminary work needed: 

• Remove complete EXHAUST SYSTEM.
• Remove the right TANK COVER .
• Remove heat shields.

Removal: 

In order to protect the prop shaft, install special tool 2 407 851 between the front and rear prop shaft.

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Loosen screws (1).

Tie the prop shaft must be tied away without fail  or supported with a suitable tool.

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Loosen screws (1).

Remove cover (2).

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Disconnect connector (1).

Loosen cable (2) from control unit bracket.

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Support rear axle differential (1) with workshop jack and special tool 23 4 150.

Secure the rear axle differential (1) with luggage strap (2) to special tool 23 4 150.

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Release screw (1) of rear axle differential.

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Undo screws (1) on left and right of cross member (2) (right side identical).

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Lower rear axle differential (1) by a maximum of 10 cm.

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Release ventilation line (1) from holder (2).

Release ventilation line (1) out of rear axle differential (3) and remove.

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Installation: 

Position ventilation line (1) on rear axle differential (3) and secure.

Secure ventilation line (1) on holder (2).

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Raise rear axle differential (1).

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Tighten screw (1) of rear axle differential hand force.

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Tighten screws (1) on left and right of cross member (2) (right side identical).

Tightening torque 33 31 3AZ .

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Tighten screw (1).

Tightening torque 33 17 1AZ .

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Remove luggage strap (2).

Lower universal jack using special tool 23 4 150 and put away.

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Secure cable (2) on control unit bracket.

Connect connector (1) to control unit.

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Position cover (2).

Tighten down screws (1).

Tightening torque 33 31 8AZ .

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Tighten down screws (1).

Tightening torque 26 11 4AZ .

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Remove special tool 2 407 851.

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Required follow-up work: 

• Install heat shields.
• Install right TANK COVER .
• Completely install the EXHAUST SYSTEM .