Removing crankshaft

Precondition 

• 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 REMOVING DRIVE BELT .
• Refer to REMOVING THE BELT TENSIONER .
• Refer to REMOVING THE AIR CONDITIONING COMPRESSOR (ENGINE REMOVED) .
• 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 REMOVING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE COOLANT CIRCUIT (CHARGE AIR COOLER) .
• Refer to REMOVING BOTH CHARGE AIR COOLERS .
• Refer to REMOVING THE CLEAN AIR PIPE OF CYLINDER BANK 1 .
• Refer to REMOVING 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 REMOVING LEFT HIGH PRESSURE PUMP .
• Refer to REMOVING THE HIGH-PRESSURE RAIL ON THE LEFT .
• Refer to REMOVING 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 REMOVING LEFT CYLINDER HEAD COVER .
• Refer to REMOVING THE TIMING CASE COVER FROM THE CYLINDER HEAD OF CYLINDER BANK 2 .
• Refer to MOVING THE CRANKSHAFT TO THE INSTALLATION POSITION TO ADJUST THE TIMINGS .
• Refer to CHECKING 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 REMOVING LEFT CYLINDER HEAD .
• Refer to REMOVING IGNITION COIL OF CYLINDER BANK 1 .
• Refer to REMOVING RIGHT HIGH-PRESSURE PUMP .
• Refer to REMOVING RIGHT RAIL .
• Refer to REMOVING 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 REMOVING THE VANOS SOLENOID ACTUATOR INTAKE OF CYLINDER BANK 1 .
• Refer to REMOVING RIGHT CYLINDER HEAD COVER .
• Refer to REMOVING 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 REMOVING RIGHT CYLINDER HEAD .
• Refer to REMOVING LOWER OIL PAN SECTION .
• Refer to REMOVING OIL PUMP .
• Refer to REMOVING 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)  .

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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.

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

• Remove the slide rail (1)  .

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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.

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

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

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• Unscrew all threaded bushing sleeves (1)  .

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  NOTE: The operations shown only for one side must be carried out on both sides.
• Loosen screws (1)  .
• Release the collar screws (M8) in the sequence (10)  to (1)  .
  Fig 4: Main Bearing Cap Collar Screws Loosening Sequence (M8)

  Courtesy of BMW OF NORTH AMERICA, INC.
• Release the collar screws (M11) in the sequence (10)  to (1)  .
• Remove the main bearing cap.
  CAUTION: Component with heavy weight. 
  Injury hazard! 

  • Note component's center of gravity.
  • Support component using a jack.
  • Secure component against falling off the jack.
  Fig 5: Main Bearing Cap Collar Screws Loosening Sequence (M11)

  Courtesy of BMW OF NORTH AMERICA, INC.
  NOTE: TECHNICAL INFORMATION 
  The work must be performed with vehicle care to prevent component damage.
• Remove the crankshaft with a support person (weight approx. 25 kg).
• Lift out crankshaft and set down safely (secure against turning).