Final Drive, Differential (0B5A Automatic Transmission)

Center Differential Housing, Transmission Installed

Special tools, testers and auxiliary items required

• Engine/Transmission Jack (V.A.G 1383 A)

• Oil Collecting And Extracting Device (V.A.G 1782)

• Counterhold Tool (T10172) with (T10172/5)

• Final Drive Support (T10337)

• Sealant

Removing

- Remove rear noise insulation - 2 -. Refer to => Body Exterior 66 Description and Operation.





Vehicles with single pipe exhaust system:

CAUTION!
The decoupling element in the front exhaust pipe could be damaged.

• Do not bend the decoupling elements in the front exhaust pipe more than 10°.

- Loosen bolts - arrows -, slide the sleeve to the rear and tie up the front exhaust pipe to the body.





Vehicles with dual pipe exhaust system:

CAUTION!
Danger of damaging the flex joint in the front muffler.

• Do not bend the decoupling element in the front muffler more than 10°.

- Loosen sleeve - 1 - and - 2 -, slide it to the rear and tie the front muffler to the body.





All Vehicles

- Remove the bolts - arrows - and the driveshaft heat shield - 1 -, where applicable.





- Remove the bolts that connect the driveshaft to the transmission by counterholding them with the Counterholder (T10172) and (T10172/5).





- Press the driveshaft together with rear final drive; the universal joint is able to slide axially.

- Tie the driveshaft to the vehicle floor.

- Mount Transmission Support (T10337) on the Engine/Transmission Jack (V.A.G 1383 A) and attach it to the bottom of the transmission mount.





- Lift the transmission slightly using the Engine/Transmission Jack (V.A.G 1383 A).

CAUTION!
There is the risk of an accident.

• The Engine/Transmission Jack (V.A.G 1383 A) may only be used during assembly and must not sit unsupervised under the vehicle.

- Remove tunnel crossmember bolts - arrows -.





- Carefully lower the transmission by dimension - a - using the Engine/Transmission Jack (V.A.G 1383 A).





• Dimension - a - = maximum 100 mm.

- Remove nuts - arrow - and the tunnel crossmember.





- Place Used Oil Collection and Extraction Device (V.A.G 1782) under transmission.





- Remove bolts - 1 through 4 - and carefully remove the center differential housing. The transmission oil will leak out while doing this.

CAUTION!
Danger of damaging the center differential.

• Carefully and slowly pull center differential housing off of transmission toward rear. Otherwise the center differential can fall out of the transmission.

• A center differential that has fallen out can no longer be installed. If differential falls out, transmission must be replaced.

If the gear carrier - 1 - remains in the center differential housing, proceed as follows:





CAUTION!
Danger of damaging the sealing surface on the center differential housing.

• Use a hammer to hit the housing on several places.

- Grip the side ridge on the gear carrier - 1 - using a pair of pliers and remove it in the - arrow A -.

- Using a rubber hammer, tap the housing on alternating sides - B arrows -.

Installing

Install in reverse order, paying attention to the following:

• Tightening specification. Refer to => [ Center Differential Housing Assembly Overview ] Final Drive, Differential (0B5A Automatic Transmission).

• Replace the bolts for the center differential housing.

- Clean both housing separating surfaces thoroughly. They must be free of oil and grease.

- Apply seal evenly; sealant.

- Coat the gear carrier surfaces with transmission oil.

- Make sure the spacer sleeve - 2 - and the shim - 1 - are mounted on the output shaft.





- Coat both outer ring surfaces on the gear carrier slightly with transmission oil.





- Insert the gear carrier.

• Installation position: The tab on the gear carrier - arrow A - must fit into the opening in the transmission housing - arrow B -.

- Place center differential - 2 - on the transmission - 1 -.





- Install the compression spring - 3 - into the center differential.

- Attach the plate spring - 5 - and shim(s) - 4 - in the center differential housing - 6 - with a little grease.

• Plate spring installation location: The side rounded on the outside faces the flange shaft.

- Press the center differential housing centrally on until it makes contact with the transmission housing and hold it securely.





- Tighten the center differential housing bolts => [ Tightening specification and sequence, center
differential housing ] Final Drive, Differential (0B5A Automatic Transmission)

- Install tunnel crossmember and tighten it. Refer to => [ Tunnel Crossmember, Transmission Mount and Transmission Support Assembly Overview ] 0B5A Automatic Transmission.





- Tighten the driveshaft on the transmission.

- Refer to=> [ Front Final Drive and Transfer Case, Filling with Transmission Oil after Repair ] Front Final Drive and Transfer Case, Filling with Transmission Oil after Repair.

- Re-assemble the exhaust system and ensure it is not under stress. Refer to => Engine Mechanical 26 Description and Operation.