Torsen housing, removing and installing (with transmission installed)

WARNING: This page is about a different car, the 2008 Audi A4, 2007 Audi A4, 2006 Audi A4, and 2005 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools, testers and auxiliary items required

Fig 1: Identifying Drip Tray V.A.G 1306

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Drip tray V.A.G1306

Fig 2: Identifying Torque Wrench V.A.G. 1331

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Torque wrench V.A.G 1331

Removing

Fig 3: Exhaust System Clamps

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Disconnect exhaust system at clamps - arrows -.

NOTE:

The flexible pipe connection (de-coupling element) in the front exhaust pipe must not be bent more than 10° - otherwise it can be damaged.
The illustration shows the exhaust system in conjunction with the 3.0 liter. V6 engine.

Disengage rear section of exhaust system at rubber mountings and remove.

NOTE:

A second technician is required for removing the rear section of the exhaust system.

Fig 4: Identifying Driveshaft Shield

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If installed, remove heat shield for drive shaft - arrows -.

Fig 5: Heatshield Bolts

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Remove heat shield - 1 - for exhaust system below selector mechanism - arrows -.

Fig 6: Locating Bolts At Transmission/Drive Shaft Flange

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Remove bolts - arrows - at transmission/drive shaft flange.
Slide drive shaft together toward rear final drive. The constant velocity joints can be moved axially.

Fig 7: Drive Shaft Tied To Side, Onto Heat Shield

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Tie drive shaft to side, onto heat shield - arrow -.
Place drip tray V.A.G1306 under transmission.
Drain off gear oil.

Fig 8: Locating Torsen Housing Bolts

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolts - arrows - and carefully detach Torsen housing - A -.

NOTE:

The illustration shows only 4 of the 6 securing bolts.

Installing Torsen housing

Installation is in reverse order of removal. Note the following:

Replace O-ring on Torsen housing.
It is important to clean threaded holes for drive shaft bolts to remove any remaining locking fluid. The threads can be cleaned with a thread tap.

Fig 9: Locating Torsen Housing Bolts

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Install Torsen housing - A - onto transmission and tighten bolts - arrows - to 10Nmplus an additional 45° (18 turn).

NOTE:

The illustration shows only 4 of the 6 securing bolts.

Fill up with gear oil and check gear oil level → Transmission oil level, checking .
Bolt drive shaft onto transmission → 39 FINAL DRIVE, DIFFERENTIAL .
Install exhaust system so it is free of stress → 26 - EXHAUST SYSTEM, EMISSION CONTROLS for relevant engine code.

Tightening torques

Component		Nm
Torsen housing to transmission housing		10 Nm plus an additional 45° ¹ /₈ turn
Heat shield for drive shaft to Torsen housing		25