Removing and Installing or Replacing Final Drive

Remove/replacing final drive (compact, Z3)

Note: When replacing the final drive, note rear axle ratio and version (with or without differential lock). Both pieces of information are embossed in type plate on final drive cover.

Drain final drive oil.

Installation:

Top up final drive oil.

Comply with specified oil quantity.

Removing propeller shaft from input flange. Service and Repair

Pull off speedometer signal plug.




Unscrew left and right output shafts and suspend from car on a piece of wire.

Installation:

Use washers (1).

Tightening torque:
Fillister head bolt M10 83 Nm (61 ft lb)
with locking teeth M10 96 Nm (71 ft lb)
M12 110 Nm (81 ft lb)
Torx Bolt M10 83 Nm (61 ft lb)
with ribbed teeth M8 64 Nm (47 ft lb)
Black M10 100 Nm (74 ft lb)
Silver (replace) M10 80 Nm (59 ft lb)
M12 135 Nm (100 ft lb)




Support final drive from underneath with a transmission lifter and special tool 33 4 390.




Unscrew screw.

Installation:

Replace self-locking nut.

Tightening torque: 77 Nm (57 ft lb)




Unfasten screws. Lower workshop hoist slightly and pull final drive backwards to remove

Installation:

Tightening torque: 110 Nm (81 ft lb)