Final Drive/Transmission Housing Seal, Replacing

FINAL DRIVE/TRANSMISSION HOUSING SEAL, REPLACING

Special tools, testers and auxiliary items
^ VW681 extractor lever
^ 3383 double seal installer
^ VAG1358A oil extractor

NOTES:
^ A faulty oil seal will allow ATF or gear oil to escape into the torque converter bellhousing through the center breather (between the two sealing lips) of the shaft seal.
^ A faulty oil seal will also allow ATF to enter the final drive; this will then become overfilled, and oil will escape through the breather.

Removing

WARNING: Only loosen the drive axle/wheel hub bolt and the wheel bolts when the vehicle is standing on its wheels.

- Raise vehicle.
- Remove both front wheels.
- Remove right drive axle heat shield.
- Remove drive axles.





- Remove drive flange bolt (arrow) (use pin to prevent flange turning).
- Place oil drain pan under transmission.
- Remove oil from final drive using VAG1358A oil extractor.
- Pull out right drive flange.
- Remove right transmission support.
- Remove bolts for final drive cover.
- Remove cover.
- Remove differential gear.





- Remove tapered roller bearing outer race -l- for differential and adjusting shim -2- (behind outer race) from transmission housing by hand.

Note: The adjustment shim (-2-) is correctly sized and must not be replaced with one of different thickness.

- Remove left drive flange.





- Remove seal.

NOTES:
^ The extractor lever must be placed behind the two sealing lips of the seal.
^ Guide the extractor lever carefully when pulling out the seal.

CAUTION: Do not place the extractor lever on the outer circumference of the seal. Otherwise, the contact surface in the transmission housing will be damaged

Installing
- Check seal seat in transmission housing for damage and repair if necessary.

Note: Coat the outer surface and the sealing lips of the seal with ATF





- Slide seal onto 3383 double seal installer.
Projecting sealing lip (arrow) of seal faces tool.





- Drive new seal in to stop.





- Install adjustment shim -2- and outer bearing race (for differential) in transmission housing by hand, until stop.





- Replace O-ring (arrow).
- Insert differential gear in transmission housing.





- Install cover for final drive.

Tightening sequence:
^ Stage 1: tighten bolts -1-, -2- and -3- hand-tight.
^ Stage 2: tighten bolts -1- through -12- to final torque in specified sequence.

- Install left drive flange.
- Install right drive flange.
- With transmission installed, check final drive fluid level and correct as necessary.






Tightening torques