Differential Assembly: Service and Repair

After completing work, check oil level and if necessary top up final drive oil.

Important: M5 only!

The replacement transmission is not filled with Lifetime oil!
It is therefore absolutely essential to carry out a running-in inspection with an oil change after 2,000 km.


Remove exhaust system.
Remove heat shield.
Remove propeller shaft from final drive.





Unfasten left and right screws and tie up output shaft.
Installation: Use washers (1).
Tightening Torque, refer to Differential, Specifications.





Support rear final drive with special tool 00 2 030 (workshop hoist) and special tool 33 4 390.





Rework special tool in accordance with drawing if necessary.
Cut (1) should be performed on both feet and cut (2) should only be performed on the fixed foot.





Unfasten nut.
Installation: Tightening Torque, refer to Differential Specifications.





Unscrew left and right nuts.
Lower final drive and pry out of flange on propeller shaft.
Installation: Replace self-locking nuts. Tightening Torque, refer to Differential, Specifications.