Removing both timing chains and installing or replacing them

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.

  Courtesy of BMW OF NORTH AMERICA, INC.

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

  Courtesy of BMW OF NORTH AMERICA, INC.

  • 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 .
• Refer to PRELOADING THE TIMING CHAIN OF CYLINDER BANK 1 .
• 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 .
• Refer to PRELOADING THE TIMING CHAIN OF CYLINDER BANK 2 .
• 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 MOUNTING 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 TIMING CASE COVER, BOTTOM .

• 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.

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Remove the gear from the crankshaft 

• Replace the bearing screws (1)  .

  Parts:  Bearing screws

Courtesy of BMW OF NORTH AMERICA, INC.

• Clean the thread in the engine block with a screw tap. 
• Replace the bearing screws (2)  .

  Parts:  Bearing screws

• Clean the thread in the engine block with a screw tap. 
• Replace the sprocket wheel (3)  .

  Parts:  Camshaft sprocket

• Detach the gear (1) using the special tools 0 490 798 (11 2 000) and 0 490 798 (11 2 000)  .
• Make sure that there are no metal chips or similar contaminants in the area of the chain drive, cleaning if necessary. 

Courtesy of BMW OF NORTH AMERICA, INC.

• Replace timing chains.

  Parts:  Timing chains

Install the gear on the crankshaft 

• Check Woodruff key (1)  for damage, replace if necessary.
• Heat camshaft sprocket to a minimum of 60°C and a maximum of 150°C and mount on the crankshaft.

Courtesy of BMW OF NORTH AMERICA, INC.

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

• Position the tensioning rail (1)  with the timing chain (2)  on the gearing of the crankshaft.

Courtesy of BMW OF NORTH AMERICA, INC.

Install the guide rail of the timing chain for cylinders 5 to 8 

• Attach and position the slide rail (1)  .

Courtesy of BMW OF NORTH AMERICA, INC.

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

• Position the tensioning rail (1)  with timing chain on the gearing of the crankshaft.

Courtesy of BMW OF NORTH AMERICA, INC.

• Attach and position the slide rail (1)  .

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING TIMING CASE COVER, BOTTOM .
• Refer to INSTALLING UPPER OIL SUMP SECTION (ENGINE REMOVED) .
• Refer to INSTALLING THE LEFT ENGINE SUPPORT BRACKET .
• Refer to INSTALLING FRONT AXLE DIFFERENTIAL .
• Refer to INSTALLING THE RIGHT ENGINE MOUNTING HOLDER .
• Refer to FASTENING AIR CONDITIONING COMPRESSOR .
• Refer to INSTALLING OIL PUMP .
• Refer to INSTALLING THE LOWER OIL PAN SECTION .
• Refer to INSTALLING RIGHT CYLINDER HEAD .
• Refer to INSTALLING THE LEFT CYLINDER HEAD .
• Refer to INSTALLING BOTH LEFT VANOS ADJUSTERS (CYLINDER HEAD INSTALLATION CYLINDER BANK 2) .
• Refer to INSTALLING BOTH VANOS ADJUSTERS (CYLINDER HEAD DISASSEMBLY, BANK 1) .
• Refer to INSTALLING THE SEALING CAP ON THE CYLINDER HEAD OF CYLINDER BANK 2 .
• Refer to INSTALLING THE LEFT CYLINDER HEAD COVER .
• Refer to INSTALLING THE CYLINDER HEAD COVER ON THE RIGHT .
• Installing conduit on bank 2.

  Courtesy of BMW OF NORTH AMERICA, INC.

  • Clip the wiring harness (2) into the clamps (1).

  Courtesy of BMW OF NORTH AMERICA, INC.

  • Position the wiring harness.
  • Tighten down screws (1).
    TIGHTENING TORQUES
    
    

    Cable duct
    M6x16 screw	Tightening torque	10Nm

• Refer to INSTALLING ENGINE VENTILATION LINE OF CYLINDER BANK 1 .
• Refer to INSTALLING THE TANK VENTILATION LINE OF CYLINDER BANK 1 PARTIALLY .
• Installing cable duct at cylinder bank 1.

  Courtesy of BMW OF NORTH AMERICA, INC.

  • Position the conduit (2).
  • Tighten the screws (1).
  TIGHTENING TORQUES
  
  

  Cable duct
  M6x16 screw	Tightening torque	10Nm

• Refer to INSTALLING THE ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
• Refer to INSTALLING THE OXYGEN SENSOR MONITOR OF CYLINDER BANK 2 .
• Refer to CHECKING THE POSITION OF THE HEAT SHIELD .
• Refer to INSTALLING THE EXPANSION TANK FOR THE CHARGE AIR COOLER .
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 5 TO 8 .
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 1 TO 4 .
• Refer to INSTALLING THE LEFT HIGH PRESSURE PUMP .
• Refer to INSTALLING THE HOLDER WITH THE VEHICLE WIRING HARNESS FOR THE SENSOR SYSTEM OF CYLINDER BANK 1 .
• Refer to INSTALLING INJECTORS .
• Refer to CONNECTING THE CONNECTOR OF THE INJECTORS OF CYLINDER BANK 2 .
• Refer to INSTALLING RAIL OF CYLINDER BANK 1 .
• Refer to INSTALLING IGNITION COILS OF CYLINDER BANK 1 .
• Refer to INSTALLING THE LEFT HIGH PRESSURE PUMP .
• Refer to INSTALLING RIGHT HIGH PRESSURE PUMP .
• Refer to INSTALLING INJECTORS .
• Refer to INSTALLING THE VACUUM PUMP .
• Refer to CONNECTING THE CONNECTOR OF THE INJECTORS OF CYLINDER BANK 2 .
• Refer to INSTALLING RAIL ON BANK 2 .
• Refer to INSTALLING THE IGNITION COILS OF CYLINDER BANK 2 .
• Refer to INSTALLING FUEL DELIVERY LINE .
• Refer to INSTALLING HEAT SHIELD ON THE BOTTOM .
• Refer to INSTALLING FRONT HEAT SHIELD .
• Refer to INSTALLING BOTH EXHAUST MANIFOLDS .
• Refer to INSTALLING THE HEAT SHIELD OF THE CYLINDER HEAD COVER FOR CYLINDERS 5 TO 8 .
• Refer to INSTALLING THE HEAT SHIELD OF THE CYLINDER HEAD COVER FOR CYLINDERS 1 TO 4 .
• Refer to INSTALLING LEFT AND RIGHT EXHAUST TURBOCHARGERS .
• Mounting fixture on the right.

  Courtesy of BMW OF NORTH AMERICA, INC.

  • Position fixture for the right (2).
  • Tightening the screws (1).
  Tightening torques
  
  

  Mount
  M6x16	Tightening torque	8 Nm

• Refer to INSTALLING LEFT MOUNT .
• Refer to REMOVING THE LEFT AND RIGHT CHARGE AIR COOLER (ENGINE REMOVED) .
• Refer to INSTALLING THE HOLDER WITH THE VEHICLE WIRING HARNESS FOR THE SENSOR SYSTEM OF CYLINDER BANK 1 .
• Installing holder with the wiring harness for the sensor system of cylinder bank 2.

  Courtesy of BMW OF NORTH AMERICA, INC.

  • Position the holder with the wiring harness for the sensor system.
  • Tighten screws (2).
    TIGHTENING TORQUES
    
    

    Holder of sensor system
    M6x16 screw	Tightening torque	10Nm

  • Connect plug connection (3) and lock.
  • Engage the coolant ventilation line in area (1) at the holder.
• Refer to INSTALLING ALTERNATOR .
• Refer to INSTALLING THE BELT TENSIONER .
• Refer to INSTALLING COOLANT PUMPS .
• Refer to INSTALLING THE FLYWHEEL .
• Refer to INSTALLING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
• Refer to INSTALLING DRIVE BELT .
• Refer to FASTENING THE UPPER HEAT SHIELD .
• Refer to INSTALLING THE LEFT AND RIGHT CHARGE AIR COOLER (ENGINE REMOVED) .
• Refer to INSTALLING THE CLEAN AIR PIPE OF CYLINDER BANK 2 .
• Refer to REMOVING THE ENGINE FROM THE ENGINE SUPPORT BRACKET .
• Refer to ATTACHING THE ENGINE TO THE LIFTING TABLE .