11 22 500 Removing And Installing Or Replacing Flywheel (N51)

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Special tools required:

For the following special tools, refer to ENGINE - SPECIAL TOOLS (N51) .

11 4 180
11 9 260
11 9 265

IMPORTANT: Aluminum-magnesium materials. No steel screws/bolts may be used due to the threat of electrochemical corrosion. A magnesium crankcase requires aluminum screws/bolts exclusively. Aluminum screws/bolts must be replaced each time they are released . Aluminum screws/bolts are permitted with and without color coding (blue). For reliable identification: Aluminum screws/bolts are not magnetic . Jointing torque and angle of rotation must be observed without fail (risk of damage) .

Necessary preliminary tasks:

Remove transmission . See 23 00 017 REMOVING AND INSTALLING TRANSMISSION (GS6-17BZ) N51/N52/N52K/N53 or 24 00 032 REMOVING AND INSTALLING AUTOMATIC TRANSMISSION (GA6L45R) .
Remove clutch . See 11 22 500 REMOVING AND INSTALLING OR REPLACING FLYWHEEL (N51) .

Block flywheel (1) with special tool 11 9 260, use an old transmission screw for this purpose. See Fig 1.

Installation:

Replace aluminum screws .

Unfasten flywheel screws.

Tightening torque. See 11 22 1AZ in 11 22 FLYWHEEL .

Fig 1: Identifying Flywheel With Special Tools

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Flywheel (1) is secured with an alignment pin.

Fit new flywheel screws.

Clean crankshaft thread for flywheel screws.

Secure flywheel with an old transmission screw (1) and special tools 11 9 260 and 11 9 265. See Fig 2.

Installation:

Replace aluminum screws .

Fig 2: Identifying Special Tools

Courtesy of BMW OF NORTH AMERICA, INC.

Release flywheel screws with special tool 11 4 180.

Installation:

Flywheel is secured with a dowel pin.

Fit new flywheel screws.

Tightening torque. See 11 22 2AZ in 11 22 FLYWHEEL .

Assemble engine.