Replacing Shaft Seal For Input Flange on Final Drive

Replacing Shaft Seal For Input Flange on Final Drive

Note: After completion of work, check transmission oil level.

Caution: Use the approved gear oil in this final drive.

Failure to comply with this instruction will result in serious damage to the final drive.

Note: E46: do not remove exhaust system.

E53:
Remove exhaust system.
Remove heat shield at rear.

E46:
Remove tension strut.

E46 Compact:
Remove propeller shaft.
Remove propeller shaft from drive flange.





Lift out retaining plate.
Mark position of collar nut (1) with respect to output shaft.





Grip drive flange with special tool 23 0 020 and release collar nut.





Detach drive flange. If necessary, detach drive flange with special tool 33 1 150.





Pull out shaft seal with special tool 00 5 010.





Drive new shaft seal firmly home with special tool 00 5 500 and 33 3 470 for final drive 188 compact 33 3 390 for final drive 168 compact respectively.





Coat sealing lips of shaft seal and sealing face of drive flange with differential oil.
Attach drive flange (1). If necessary, press on drive flange with special tool 23 1 300 but only until collar nut can be screwed on a few turns.

Caution: The collar nut must never be tightened beyond the marker points!!!

Friction torque of bevel gear bearing would otherwise be changed -> final drive damage, noise.





Tighten down collar nut (1) only until marker points are aligned.





Drive in new tab washer (1) with special tools 00 5 500 and 333480.