Replacing the main bearing shells and the guide bearing shells

• Remove the main bearing shells with lubricating groove (1) to (3) and (5) to (7) from the crankcase.
• Remove the guide bearing shell with lubricating groove (4) from the crankcase.

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• Remove the main bearing shells (1) to (3) and (5) to (7) from the crankshaft bearing caps.
• Remove the guide bearing shell (4) from the crankshaft bearing cap.

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• Make sure that the correct classification (arrows) is installed.
• Replace main bearing shells (1) with  lubricating groove.

  Parts:  Main bearing shells with lubricating groove

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• Make sure that the correct classification (arrows) is installed.
• Replace main bearing shells (1) without  lubricating groove.

  Parts:  Main bearing shells without lubricating groove

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• Make sure that the correct classification (arrows) is installed.
• Replace the guide bearing shell with  lubricating groove (1) and the guide bearing shell (2) without  lubricating groove.

  Parts:  Guide bearing shells

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• Make sure the crankshaft main bearing shell (1) is correctly installed with the guide lug in the highlighted  area.

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• Make sure the crankshaft guide shell (1) is correctly installed with the guide lug in the highlighted  area.

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• Make sure the crankshaft main bearing shell (1) is correctly installed with the guide lug in the highlighted  area.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Make sure the crankshaft guide shell (1) is correctly installed with the guide lug in the highlighted  area.

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• Install the main bearing shells (1) to (3) and (5) to (7) in the crankshaft bearing cap.
• Install the guide bearing shell (4) in the crankshaft bearing cap.
• Oil all main bearing shells and guide bearing shells (1) to (7).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Install main bearing shells with lubricating groove (1) to (3) and (5) to (7) in the crankcase.
• Install the guide bearing shell with lubricating groove (4) in the crankcase.
• Oil all main bearing shells and guide bearing shells with lubricating groove (1) to (7).

  Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Install the CRANKSHAFT .
• Check the crankshaft SIDE CLEARANCE .
• Check the crankshaft FRICTION COEFFICIENT .
• Measure PISTON .
• Measure a CYLINDER .
• Install all PISTONS with connecting rod.
• Install the OIL DEFLECTOR .
• Install the oil VACUUM PUMP .
• Install TIMING CHAIN .
• Install the rear timing case COVER .
• Refit engine OIL PAN .
• Install BEARING BRACKET
• Install front axle DIFFERENTIAL .
• Install the FLYWHEEL .
• Install the VIBRATION DAMPER .
• Block the CRANKSHAFT in the TDC firing position of cylinder 1.
• Seal the OIL DUCT .
• Clean sealing SURFACES .
• Install the cylinder HEAD GASKET .
• Install the CYLINDER HEAD .
• Adjust the CAMSHAFTS with the special tool.
• Install the intake ADJUSTER .
• Install the intake adjuster VANOS CENTRAL VALVE .
• Install exhaust camshaft ADJUSTER .
• Install the exhaust camshaft adjuster VANOS CENTRAL VALVE .
• Pre-tension the TIMING CHAIN with the special tool.
• Tighten the exhaust camshaft adjuster VANOS CENTRAL VALVE .
• Tighten the intake adjuster VANOS CENTRAL VALVE .
• Disassemble all SPECIAL TOOLS .
• Install CHAIN TENSIONER .
• Check the camshaft TIMINGS .
• Install the COOLANT LINE between the cylinder head and the coolant pump.
• Install the exhaust turbocharger OIL RETURN LINE .
• Install cylinder HEAD COVER .
• Install both ACTUATORS .
• PREPARE the injectors for installation.
• Install the cylinders 4 to 6 high-pressure RAIL with injectors.
• Install cylinders 1 to 3 RAIL with injectors.
• Install the HIGH-PRESSURE LINE between the high-pressure pump and the high-pressure rail.
• Install HIGH PRESSURE PUMP .
• Install all SPARK PLUGS .
• Install all IGNITION COILS .
• Install CATALYTIC CONVERTER .
• Install the OXYGEN SENSOR MONITOR .
• Install LAMBDA OXYGEN SENSOR .
• Install the INTAKE PLENUM .
• Install the tank VENT VALVE .
• Install charge AIR LINE .
• Install rear ACOUSTIC COVER .
• Fill ENGINE OIL
• Top up/check front axle TRANSMISSION OIL .
• Remove the ENGINE from the assembly jig.
• Mount the ENGINE on the front axle.
• Install the complete FRONT AXLE including engine and transmission.