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Home >> BMW >> 2006 >> 750i >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Repair (N62) >> 21 Crankshaft With Bearing >> 11 21 500 Replacing Crankshaft (N62 / N62TU)

11 21 500 Replacing Crankshaft (N62 / N62TU)

CRANKSHAFT REFERENCE

Operation: Note:
Remove ENGINE   
Remove cylinder head (cylinder bank 1 to 4)  
Remove cylinder head (cylinder bank 5 to 8)  
Remove HUB FOR VIBRATION DAMPER   
Removing lower timing case cover  
Removing oil pan. See REMOVING AND INSTALLING/REPLACING OIL SUMP TOP SECTION (N62/N62TU)  and REMOVING AND INSTALLING/REPLACING OIL SUMP BOTTOM SECTION (N62/N62TU)   
Remove OIL PUMP   
Removing piston  
Remove FLYWHEEL   

Release main bearing inclined screw connection (1).

Installation: 

Tightening torque: 11 11 3AZ  . See ENGINE BLOCK for specs.

Fig 1: Identifying Main Bearing Inclined Screw Connection
G04739736Courtesy of BMW OF NORTH AMERICA, INC.

Release spacer bolt (2).

Tightening torque: 11 11 3AZ  . See ENGINE BLOCK for specs.

Release main bearing screws.

Tightening torque: 11 11 2AZ  . See ENGINE BLOCK, CYLINDER CRANKCASE for specs.

Fig 2: Identifying Spacer Bolt
G04739737Courtesy of BMW OF NORTH AMERICA, INC.

Remove main bearing caps 1 to 5.

Lever out crankshaft.

Fig 3: Identifying Main Bearing Caps
G04739738Courtesy of BMW OF NORTH AMERICA, INC.

Replace MAIN CRANKSHAFT BEARING SHELLS .

Replace CONROD BEARING SHELLS .