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Home >> BMW >> 2011 >> Z4 35is >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine - Repair (N52)) >> 1122 Flywheel >> 11 22 500 Removing and installing/replacing flywheel (N52K)

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

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Aluminium-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: 

For vehicles with optional extra SA205 (automatic transmission) 

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

Installation: 

Replace aluminum screws. 

Unfasten flywheel screws.

Tightening torque 11 22 1AZ .

Installation: 

Flywheel (1) is secured with an alignment pin.

Fig 1: Supporting Flywheel With Existing Transmission Bolt And Special Tool 11 9 260
G04751112Courtesy of BMW OF NORTH AMERICA, INC.

Fit new flywheel screws.

Clean all threads for flywheel screws in crankshaft.

For vehicles without optional extra SA205 (automatic transmission) 

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

Installation: 

Replace aluminum screws. 

Release flywheel bolts with special tool 11 4 180 /

Tightening torque 11 22 2AZ .

Installation: 

Flywheel is secured with a dowel pin.

Fit new flywheel screws.

Clean all threads for flywheel screws in crankshaft.

Fig 2: Tightening Flywheel Bolts Using Special Tools (11 4 180)
G04751113Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.