Remove counterbalance shafts

Preliminary work 

• Refer to REMOVING ENGINE .
• Refer to INSTALLING THE ENGINE ON THE ASSEMBLY STAND .
• Refer to RELEASING THE OIL DRAIN PLUG .
• Refer to TIGHTENING THE OIL DRAIN PLUG .
• Refer to REMOVING ALL SPARK PLUGS .
• Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE HIGH PRESSURE PUMP AND THE RAIL .
• Refer to REMOVING HIGH PRESSURE PUMP .
• Refer to REMOVING THE RAIL WITH INJECTORS .
• Refer to REMOVING BOTH ACTUATORS .
• Refer to REMOVING THE CYLINDER HEAD COVER .
• Refer to REMOVING TANK VENT VALVE .
• Refer to REMOVING THE INTAKE PLENUM .
• Refer to REMOVING THE HEAT SHIELD AT THE CYLINDER HEAD .
• Refer to REMOVING THE OIL RETURN LINE FOR THE EXHAUST TURBOCHARGER .
• Refer to REMOVING THE COOLANT RETURN LINE FOR THE EXHAUST TURBOCHARGER .
• Refer to REMOVING THE COOLANT FEED LINE FOR THE EXHAUST GAS TURBOCHARGER .
• Refer to BLOCKING ENGINE IN TDC FIRING POSITION .
• Refer to REMOVING CHAIN TENSIONER .
• Refer to RELEASING THE VANOS CENTRAL VALVE OF THE INTAKE ADJUSTER .
• Refer to RELEASING VANOS CENTRAL VALVE OF THE EXHAUST CAMSHAFT ADJUSTER .
• Refer to REMOVING THE VANOS CENTRAL VALVE OF THE INTAKE ADJUSTER .
• Refer to REMOVING THE VANOS CENTRAL VALVE OF THE EXHAUST CAMSHAFT ADJUSTER .
• Refer to REMOVING INTAKE ADJUSTER .
• Refer to REMOVING EXHAUST CAMSHAFT ADJUSTER .
• Refer to REMOVING THE TEST GAUGES FOR SECURING THE CAMSHAFTS .
• Refer to REMOVING THE CYLINDER HEAD .
• Refer to REMOVING THE CYLINDER HEAD GASKET .
• Refer to REMOVING THE VIBRATION DAMPER .
• Refer to REMOVING FLYWHEEL .
• Refer to REMOVING THE ACOUSTIC COVER OF THE OIL SUMP .
• 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)  .

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

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  NOTE: The description is for one component only. The procedure is identical for all further 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  .

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  TIGHTENING TORQUES SPECIFICATION
  
  

  Special tool 2 288 054 to crankshaft
  	tightening torque	20 Nm

• Loosen screws (1)  .

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

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  NOTE: The description is for one component only. The procedure is identical for all further 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.

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

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• Remove the gear (1)  .

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• Remove the gear (1)  .

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• Loosen nut (1)  .

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• Remove the gear (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.