11 22 500 Removing and installing or replacing flywheel (N51)

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Special tools required:

11 4 180
11 9 260
11 9 265

IMPORTANT: Aluminium-magnesium materials.

No steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminium screws/bolts exclusively.

Aluminium screws/bolts must be replaced each time they are released .

Aluminium screws/bolts are permitted with and without color coding (blue).

For reliable identification:

Aluminium 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 MANUAL TRANSMISSION or AUTOMATIC TRANSMISSION .
Remove Clutch

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

Installation:

Replace aluminium screws.

Unfasten flywheel screws.

For tightening torque refer to 11 22 1AZ in 11 22 FLYWHEEL .

Installation:

Flywheel (1) is secured with an alignment pin.

Fit new flywheel screws.

Clean all threads for flywheel screws in crankshaft.

Fig 1: Flywheel, Special Tools (11 9 260), (11 9 263) And (11 9 264)

Courtesy of BMW OF NORTH AMERICA, INC.

Secure flywheel with existing transmission bolt (1) and special tools 11 9 260 and 11 9 265 .

Installation:

Replace aluminium screws.

Release flywheel screws with special tool 11 4 180.

Installation:

Flywheel is secured with a dowel pin.

Fit new flywheel screws.

For tightening torque refer to 11 22 2AZ in 11 22 FLYWHEEL .

Fig 2: Special Tools (11 4 180), (11 9 260), (11 9 265) And Flywheel

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.