Removing crankshaft

Prerequisite 

• Remove and install front axle complete with engine and transmission. Remove and install the engine on the front axle

Preliminary work 

• Refer to MOUNTING THE ENGINE TO THE ENGINE SUPPORT BRACKET .
• Refer to RELEASING THE OIL DRAIN PLUG .
• Refer to REMOVING FLYWHEEL .
• Refer to REMOVE DRIVE BELT .
• Refer to REMOVING THE BELT TENSIONER .
• Refer to REMOVING THE VIBRATION DAMPER .
• Refer to REMOVING THE COOLANT PUMP .
• Refer to RELEASING LEFT CHARGE AIR LINE PARTIALLY .
• Refer to PARTIALLY RELEASING THE RIGHT CHARGE AIR LINE .
• Refer to REMOVE THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE COOLANT CIRCUIT (CHARGE COOLER) .
• Refer to REMOVE BOTH CHARGE AIR COOLERS .
• Refer to REMOVE THE CLEAN AIR PIPE OF CYLINDER BANK 1 .
• Refer to REMOVE THE CLEAN AIR PIPE OF CYLINDER BANK 2 .
• Refer to REMOVING THE IGNITION COILS OF CYLINDERS 1 AND 5 .
• Refer to REMOVING FUEL DELIVERY LINE .
• Refer to REMOVING IGNITION COIL OF CYLINDER BANK 2 .
• Refer to REMOVE LEFT HIGH PRESSURE PUMP .
• Refer to REMOVE THE HIGH-PRESSURE RAIL ON THE LEFT .
• Refer to REMOVE THE INJECTORS FOR CYLINDERS 5 TO 8 .
• Refer to REMOVING VANOS SOLENOID ACTUATOR, EXHAUST OF CYLINDER BANK 2 .
• Refer to REMOVING VANOS SOLENOID ACTUATOR, INTAKE OF CYLINDER BANK 2 .
• Refer to REMOVING THE LEFT AND RIGHT EXHAUST TURBOCHARGER .
• Refer to REMOVING FRONT HEAT SHIELD .
• Refer to REMOVING THE OIL FEED LINE AT THE EXHAUST TURBOCHARGER FOR CYLINDERS 5 TO 8 .
• Refer to REMOVE LEFT CYLINDER HEAD COVER .
• Refer to REMOVE THE SEALING CAP ON THE CYLINDER HEAD OF THE CYLINDER BANK 2 .
• Refer to MOVING THE CRANKSHAFT TO THE INSTALLATION POSITION TO ADJUST THE TIMINGS .
• Refer to CHECK THE VANOS ADJUSTER OF CYLINDER BANK 2 .
• Refer to RELAXING CHAIN TENSIONER ON BANK 2 FOR CHECKING OR SETTING TIMING .
• Refer to REMOVING HYDRAULIC CHAIN TENSIONER OF CYLINDER BANK 2 .
• Refer to PRELOADING THE TIMING CHAIN OF CYLINDER BANK 2 .
• Refer to FIXING THE ENGINE IN THE INSTALLATION POSITION ON CYLINDER 1 (SET VALVE TIMINGS) .
• Refer to REMOVING BOTH LEFT VANOS ADJUSTERS .
• Refer to REMOVING SPECIAL TOOL FOR FIXING CAMSHAFTS IN POSITION ON BANK 2 .
• Refer to REMOVING SPECIAL TOOL TO PRETENSION TIMING CHAIN ON CYLINDER BANK 2 .
• Refer to REMOVE LEFT CYLINDER HEAD .
• Refer to REMOVING IGNITION COIL OF CYLINDER BANK 1 .
• Refer to REMOVE RIGHT HIGH-PRESSURE PUMP .
• Refer to REMOVE RIGHT RAIL .
• Refer to REMOVE THE INJECTORS FOR CYLINDERS 1 TO 4 .
• Refer to PARTIALLY RELEASING THE GUIDE TUBE FOR THE OIL DIPSTICK .
• Refer to REMOVING VANOS SOLENOID ACTUATOR, EXHAUST OF CYLINDER BANK 1 .
• Refer to REMOVE THE VANOS SOLENOID ACTUATOR INTAKE OF CYLINDER BANK 1 .
• Refer to REMOVE RIGHT CYLINDER HEAD COVER .
• Refer to REMOVE THE SEALING CAP ON THE CYLINDER HEAD OF THE CYLINDER BANK 1 .
• Refer to CHECKING THE VANOS ADJUSTER OF CYLINDER BANK 1 .
• Refer to RELIEVING THE CHAIN TENSIONER AT CYLINDER BANK 1 FOR CHECKING OR SETTING THE VALVE TIMINGS .
• Refer to REMOVING HYDRAULIC CHAIN TENSIONER OF CYLINDER BANK 1 .
• Refer to PRELOADING THE TIMING CHAIN OF CYLINDER BANK 1 .
• Refer to FIXING THE ENGINE IN THE INSTALLATION POSITION ON CYLINDER 1 (SET VALVE TIMINGS) .
• Refer to REMOVING BOTH RIGHT VANOS ADJUSTERS .
• Refer to REMOVING SPECIAL TOOL FOR FIXING CAMSHAFTS ON BANK 1 .
• Refer to REMOVING THE SPECIAL TOOL TO PRETENSION THE TIMING CHAIN AT CYLINDER BANK 1 .
• Refer to REMOVE RIGHT CYLINDER HEAD .
• Refer to REMOVE LOWER OIL PAN SECTION .
• Refer to REMOVE OIL PUMP .
• Refer to REMOVE FRONT AXLE DIFFERENTIAL .
• Refer to REMOVING UPPER OIL SUMP SECTION, ENGINE REMOVED .
• Refer to REMOVING THE PISTON WITH CONNECTING ROD .

Removing sealing cap with radial shaft seal (oil pan removed) 

• Loosen screws (1).
• Loosen screws (2).
• Remove the sealing cap with radial shaft seal (3).

Courtesy of BMW OF NORTH AMERICA, INC.

• Remove the roller chain (1).

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• Unlock and disconnect the plug connection (1) on the coolant temperature sensor (2).

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew the screw connection 1 on the timing case cover in front 

• Loosen screws in the order (10) to (12).
• Remove the carrier plate (1).

Release the screw connection 2 on the front timing case cover 

• Loosen screws in the order (9) to (3).

Release the screw connection 3 on the timing case cover in front 

• Loosen screws in the order (1) to (2).
• Remove timing case cover.

• Remove the slide rail (1).

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the tensioning rail of the timing chain for cylinder 1-4 

• Remove the tensioning rail (1) with the timing chain (2) from the crankshaft gearing.

Courtesy of BMW OF NORTH AMERICA, INC.

Removing the slide rail of the timing chain for cylinders 5 to 8 

• Remove the slide rail (1).

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the tensioning rail of the timing chain for cylinder 5-8 

• Remove the tensioning rail (1) with the timing chain (2) from the crankshaft gearing.

Courtesy of BMW OF NORTH AMERICA, INC.

• Observe the arrangement of the main bearing cap as well as the assignment of the crankshaft bearing caps from (1) to (5).

Courtesy of BMW OF NORTH AMERICA, INC.

• Loosen the main bearing transverse screws on the spacer bolts (1), the screws (2), and the spacer screw (3).

Courtesy of BMW OF NORTH AMERICA, INC.

• Unscrew all threaded bushing sleeves (1).

Courtesy of BMW OF NORTH AMERICA, INC.

• Loosen screws (1).
• Release the collar screws (M8) in the sequence (10) to (1).

• Release the collar screws (M11) in the sequence (10) to (1).
• Remove the main bearing cap.

• Secure component against falling off the jack.

• Remove the crankshaft with a support person (weight approx. 25 kg).
• Lift out crankshaft and set down safely (secure against turning).