Removing crankshaft

Precondition 

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

  Engine oil has been drained

Preliminary work 

• Refer to REMOVING THE ENGINE FROM THE LIFTING TABLE .
• Refer to MOUNTING THE ENGINE TO THE ENGINE SUPPORT BRACKET .
• Refer to REMOVING THE CLEAN AIR PIPE OF CYLINDER BANK 2 .
• Refer to REMOVING THE LEFT AND RIGHT CHARGE AIR COOLER (ENGINE REMOVED) .
• Refer to RELEASING THE UPPER HEAT SHIELD .
• Refer to REMOVING DRIVE BELT .
• Refer to REMOVING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
• Refer to REMOVING THE VIBRATION DAMPER .
• Refer to REMOVING FLYWHEEL .
• Refer to REMOVING THE COOLANT PUMP .
• Refer to REMOVING THE BELT TENSIONER .
• Refer to REMOVING THE ALTERNATOR .
• Refer to PREPARING SPECIAL TOOL (8.5 MM DIAMETER) .
• Refer to REMOVING THE HOLDER WITH THE VEHICLE WIRING HARNESS FOR THE SENSOR SYSTEM OF CYLINDER BANK 1 .
• Refer to REMOVING THE HOLDER WITH THE VEHICLE WIRING HARNESS FOR THE SENSOR SYSTEM OF CYLINDER BANK 2 .
• Refer to REMOVING LEFT MOUNT .
• Refer to REMOVING RIGHT MOUNT .
• Refer to REMOVING THE LEFT AND RIGHT EXHAUST TURBOCHARGER .
• Refer to REMOVING HEAT SHIELD OF THE CYLINDER HEAD COVER FOR CYLINDERS 1 TO 4 .
• Refer to REMOVING HEAT SHIELD OF CYLINDER HEAD COVER OF CYLINDERS 5 TO 8 .
• Refer to REMOVING BOTH EXHAUST MANIFOLDS .
• Refer to REMOVING FRONT HEAT SHIELD .
• Refer to REMOVING HEAT SHIELD AT BOTTOM .
• Refer to REMOVING FUEL DELIVERY LINE .
• Refer to REMOVING IGNITION COIL OF CYLINDER BANK 1 .
• Refer to REMOVING IGNITION COIL OF CYLINDER BANK 1 .
• Refer to REMOVING HIGH PRESSURE RAIL AT CYLINDER BANK 1 .
• Refer to DISCONNECTING THE PLUG CONNECTIONS OF THE INJECTORS OF CYLINDER BANK 1 .
• Refer to REMOVING INJECTORS .
• Refer to REMOVING VACUUM PUMP .
• Removing conduit from bank 1.

  Courtesy of BMW OF NORTH AMERICA, INC.

  • Loosen screws (1).
  • Slide conduit (2) downwards.
• Refer to REMOVING IGNITION COIL OF CYLINDER BANK 2 .
• Refer to REMOVING THE RIGHT HIGH PRESSURE PUMP .
• Refer to REMOVING RAIL FROM BANK 2 .
• Refer to DISCONNECTING PLUG CONNECTIONS OF THE INJECTORS OF CYLINDER BANK 2 .
• Refer to REMOVING INJECTORS .
• Refer to REMOVING THE HOLDER WITH THE VEHICLE WIRING HARNESS FOR THE SENSOR SYSTEM OF CYLINDER BANK 1 .
• Refer to REMOVING THE LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 1 TO 4 .
• Refer to REMOVING LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 5 TO 8 .
• Refer to REMOVING LEFT HIGH PRESSURE PUMP .
• Refer to REMOVING THE OXYGEN SENSOR MONITOR OF CYLINDER BANK 2 .
• Removing conduit from bank 1.

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  • Loosen screws (1).
  • Slide conduit (2) downwards.
• Removing the tank ventilation line of cylinder bank 1 partially.

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  • Press the tank vent line (2) on the catch (1) and unlock.
  • Disconnect the tank vent line (2).
  • Fold the tank vent line (2) to the side
• Refer to REMOVING ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
• Refer to REMOVING THE WIRING HARNESS FROM THE CYLINDER BANK 2 .
• Refer to REMOVING RIGHT CYLINDER HEAD COVER .
• Refer to REMOVING LEFT CYLINDER HEAD COVER .
• 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 .
• Preloading the timing chain of cylinder bank 1.
  CAUTION: RISK OF DAMAGE 

  Damage to timing chain or timing chain drive.

  Turning the engine without chain tensioner or special tool can result in damage to the timing chain and timing chain drive.

  • Always turn the engine with the chain tensioner or the special tool.

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  • Hand-tighten the bolts (1).
  • Pre-tension timing chain on special tool 2 249 162  at hexagon screw (2) with special tool 0 496 778 (00 9 460)  to 0.6 Nm.
  TIGHTENING TORQUES
  
  

  Preload timing chain
  tightening torque	0.6 Nm

• Refer to SECURING THE ENGINE IN INSTALLATION POSITION AT CYLINDER 1 .
• Refer to INSTALLING THE SPECIAL TOOL TO SECURING THE CAMSHAFTS OF CYLINDER BANK 1 .
• Refer to REMOVING BOTH RIGHT VANOS ADJUSTERS .
• Refer to REMOVING SPECIAL TOOL FOR FIXING CAMSHAFTS ON BANK 1 .
• Refer to REMOVING THE SEALING CAP ON THE CYLINDER HEAD OF THE CYLINDER BANK 2 .
• Refer to MOVING THE CRANKSHAFT INTO THE INSTALLATION POSITION OF CYLINDER BANK 1 .
• 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 .
• Preloading the timing chain of cylinder bank 1.
  CAUTION: RISK OF DAMAGE 

  Damage to timing chain or timing chain drive.

  Turning the engine without chain tensioner or special tool can result in damage to the timing chain and timing chain drive.

  • Always turn the engine with the chain tensioner or the special tool.

  Courtesy of BMW OF NORTH AMERICA, INC.

  • Hand-tighten the bolts (1).
  • Pre-tension timing chain on special tool 2 249 162  at hexagon screw (2) with special tool 0 496 778 (00 9 460)  to 0.6 Nm.
  TIGHTENING TORQUES
  
  

  Preload timing chain
  tightening torque	0.6 Nm

• Refer to SECURING THE ENGINE IN INSTALLATION POSITION AT CYLINDER 1 .
• Refer to INSTALLING THE SPECIAL TOOL TO SECURING THE CAMSHAFTS OF CYLINDER BANK 2 .
• Refer to REMOVING BOTH LEFT VANOS ADJUSTERS .
• Refer to REMOVING RIGHT CYLINDER HEAD .
• Refer to REMOVING LEFT CYLINDER HEAD .
• Refer to REMOVING LOWERING OIL PAN SECTION .
• Refer to REMOVING OIL PUMP .
• Refer to RELEASING AIR CONDITIONING COMPRESSOR .
• Refer to REMOVING THE RIGHT ENGINE MOUNT HOLDER .
• Refer to REMOVING FRONT AXLE DIFFERENTIAL .
• Refer to REMOVING THE LEFT ENGINE SUPPORT BRACKET .
• 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)  .

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• 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)  .

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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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• Note the arrangement of the main bearing cap and the assignment of the crankshaft bearing caps from (1)  to (5)  .

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• Release the main bearing taper screw mounting in the marked areas.

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• Unscrew all threaded bushing sleeves (1)  .

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• If fitted: 

  Loosen screws (1)  .

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• Release the (M8) collar screws in order from (10)  to (1)  .
  Fig 4: Main Bearing Caps Collar Screws Loosening Sequence (M8)

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

• Remove the crankshaft with a support person (weight approx. 25 kg).
• Lift out the crankshaft and place it aside safely (secure against twisting).