Necessary preliminary work

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Remove transmission.
Remove clutch release bearing.

Release bolts (1) and remove guide tube (2).

Fig 1: Identifying Guide Tube

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: The shaft seal and the guide tube are replaced together.

Installation note:

Wrap adhesive tape round keyway splines of drive shaft to avoid damaging the sealing ring while it is being installed.

Lubricate sealing lip of sealing ring.

Replace mounting bolts of guide bush.

Tightening torque 23 11 1AZ .