Remove counterbalance shafts

• All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
• For additional information see:

  61 00... SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .

• For additional information see:

  61 25... NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .

Preliminary work 

• Refer to REMOVING THE OIL FILLER CAP .
• Refer to DRAINING THE MOTOR OIL .
• Refer to REMOVING ENGINE .
• Refer to REMOVING THE RIGHT ENGINE MOUNTING BRACKET (PHEV) .
• Refer to INSTALLING THE ENGINE ON THE ASSEMBLY JIG .
• Refer to REMOVING BEARING BRACKET .
• Refer to REMOVING FRONT AXLE DIFFERENTIAL .
• Refer to REMOVING THE DRIVE BELT FOR COOLANT PUMP .
• Refer to REMOVING TANK VENT VALVE .
• Refer to REMOVING INTAKE PLENUM .
• Refer to REMOVING IGNITION COILS .
• Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE HIGH PRESSURE PUMP AND THE RAIL .
• Refer to REMOVING THE INJECTORS .
• Refer to REMOVING FUEL DELIVERY LINE .
• Refer to REMOVING HIGH PRESSURE PUMP .
• Refer to REMOVING BOTH ACTUATORS (ENGINE REMOVED) .
• Refer to REMOVING AUXILIARY COOLANT PUMP FOR THE EXHAUST TURBOCHARGER .
• Refer to REMOVING THE COOLANT RETURNING LINE FOR THE EXHAUST TURBOCHARGER (AUXILIARY COOLANT PUMP REMOVED) .
• Refer to REMOVING THE COOLANT FEED LINE FOR THE EXHAUST TURBOCHARGER (COOLANT RETURNING LINE REMOVED) .
• Refer to REMOVING FRONT ENGINE ENCAPSULATION .
• Refer to REMOVING THE CYLINDER HEAD COVER (ENGINE REMOVED) .
• Refer to REMOVING THE ACOUSTIC COVER OF THE OIL SUMP .
• Refer to REMOVING THE THERMOSTAT FROM THE TRANSMISSION OIL LINES .
• Refer to TURNING THE ENGINE ON THE VIBRATION DAMPER .
• Refer to BLOCKING THE CRANKSHAFT IN HE TDC FIRING POSITION OF CYLINDER 1 .
• Refer to BLOCKING THE CAMSHAFTS .
• Refer to REMOVING THE CHAIN TENSIONER (ENGINE REMOVED) .
• Refer to RELEASING THE VANOS CENTRAL VALVE .
• Refer to REMOVING INTAKE ADJUSTER .
• Refer to REMOVING EXHAUST CAMSHAFT ADJUSTER .
• Refer to DISASSEMBLING THE SPECIAL TOOL 2 358 122 .
• Refer to REMOVING THE OIL RETURN LINE FOR THE EXHAUST TURBOCHARGER .
• Refer to REMOVING THE CYLINDER HEAD .
• Refer to REMOVING THE VIBRATION DAMPER .
• Refer to REMOVING FLYWHEEL .
• Refer to REMOVING OIL SUMP .
• Refer to REMOVING REAR TIMING CASE COVER .
• Refer to REMOVING THE OIL VACUUM PUMP .
• Refer to REMOVING THE OIL DEFLECTOR .

• Remove both sealing caps (1)  with a suitable tool (2)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Rotate the crankshaft to the lower dead center of the first cylinder  .
• Mount the special tool 2 288 054  and abut the screws (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

  NOTE: The description is provided only at one component. The procedure is the same for all other components.
• Makes sure that the special tool 2 288 054  fits in the guides (1)  of the counterbalance shafts (2)  correctly.
• If necessary, slightly rotate the crankshaft.
• Tighten special tool 2 288 054  .

  Courtesy of BMW OF NORTH AMERICA, INC.

  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Special tool 2 288 054 to crankshaft
  tightening torque		20 Nm

• Loosen screws (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Loosen screws (1)  .
• Guide the special tool 2 288 054  out and remove.

  Courtesy of BMW OF NORTH AMERICA, INC.

  NOTE: The description is provided only at one component. The procedure is the same for all other components.
• Screw the special tool 2 458 114  into the gear of the counterbalance shaft and counter support with an open-end wrench (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

  NOTE: The gears are pressed onto the counterbalance shaft with a taper and can only be released with the special tool 2 458 114  .

  • Release the counterbalance shaft by screwing in the screw (2)  of the special tool 2 458 114  from the gear.
  • Carefully remove the counterbalance shafts (1)  from the crankcase towards the front.

    The counterbalance shafts (1)  must not be in the bearing positions, as this might damage the crankcase.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Check all needle bearings of the counterbalance shafts (1)  for damage and replace if necessary.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Remove the gear (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Remove the gear (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Loosen nut (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Remove the gear (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.