Final Drive/Transmission Housing Seal

Final Drive/Transmission Housing Seal

Special tools, testers and auxiliary items required

• Extractor lever (VW681)

• Double sealing ring installer (3383)

• Drip tray (VAG1306)

• Oil siphoning unit (VAG1358A)

• A faulty sealing ring lets ATF or gear oil escape into the converter housing via the center vent of the shaft seal (between the two sealing lips).

• In addition, a faulty sealing ring can let ATF escape into the center differential. It over-fills and oil escapes at the differential vent.

Removing

- Remove cover for front final drive. Refer to => [ Final Drive Cover O-Ring Seal ] Final Drive Cover O-Ring Seal.

- Pull out differential and remove.

- Remove tapered roller bearing outer race of differential - 1 - and shim - 2 - which is behind it from transmission housing by hand.





• Shim is pre-determined and must not be exchanged for a shim with another thickness.

- Remove left drive flange. Refer to => [ Left Drive Flange, Seal, and Grooved Ball Bearing ] Left Drive Flange, Seal, and Grooved Ball Bearing.

- Pull out seal.





• Extractor lever must be positioned behind both sealing lips of the sealing ring. Do not position at outer circumference of sealing ring, otherwise the contact surface in transmission housing will be damaged. When levering out, carefully guide extractor lever.

Installing

- Check seal seat in transmission housing for damage; rework if necessary.

- Coat outer circumference and sealing lip of sealing ring with ATF.

- Slide seal onto double sealing ring installer ( 3383) so that the projecting sealing lip (arrow) of sealing ring faces tool.





- Drive in new sealing ring to stop.





- Install left drive flange. Refer to => [ Left Drive Flange, Seal, and Grooved Ball Bearing ] Left Drive Flange, Seal, and Grooved Ball Bearing.

- Insert adjustment shim - 2 - and tapered roller bearing outer race for differential - 1 - into transmission housing up to stop by hand.





- Insert differential into transmission housing.

- Install cover for front final drive => [ Installing ] Final Drive Cover O-Ring Seal.

- Install right drive flange. Refer to => [ Right Drive Flange Seal ] Right Drive Flange Seal.

- Install transmission support. Refer to => [ Transmission Mounts ] 01VA Transmission.

- Install right front exhaust pipe.

- Install drive axle.

- Top-up and check gear oil in front final drive. Refer to => [ Front Final Drive Gear Oil, Checking ] .

Tightening specifications