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Home >> BMW >> 2008 >> 323i Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Repair - E90/E91 (-08); E92/E93 (N51/N52) >> Flywheel >> 11 22 500 Removing and installing/replacing flywheel (N52K)

11 22 500 Removing and installing/replacing flywheel (N52K)

Special tools required: 

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: 

For vehicles with optional extra SA205 (automatic transmission): 

Secure flywheel (1) with existing transmission bolt (2) and special tool 11 9 260 .

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: Special Tool (11 9 260), Flywheel And Existing Transmission Bolt
G04751112Courtesy of BMW OF NORTH AMERICA, INC.

For vehicles without optional extra SA205 (automatic transmission): 

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.

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
G04751113Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Flywheel is secured with a dowel pin.

Fit new flywheel screws.

Clean all threads for flywheel screws in crankshaft.

Assemble engine.