Installing the crankshaft

Rotate the threaded support sleeves in reverse 

• Rotate the threaded support sleeves in the main bearing cap in reverse.

Courtesy of BMW OF NORTH AMERICA, INC.

When replacing the crankshaft bearings or crankshaft 

Replacement: Observing the classification of bearing shells 

• Observe the classification of the bearing shells (1)  through (3)  :

  The bearing shell (1)  has yellow color coding in the (5)  area.

  The bearing shell (2)  has green color coding in the (5)  area.

  The bearing shell (3)  has purple color coding in the (5)  area.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Make sure that the right classification is implemented in accordance with the (4)  area.
• Replace the main bearing shells.

Parts:  Main bearing shells

Courtesy of BMW OF NORTH AMERICA, INC.

• Observe the assignment of classification of bearing seats (1)  to (5)  on the crankshaft:

  Bearing seats
  Bearing seat 1
  Bearing seat 2
  Bearing seat 3 (guide bearing)
  Bearing seat 4
  Bearing seat 5

• Observe the assignment of classification of bearing seats (1)  to (5)  on the crankcase upper section:

Bearing seats
Bearing seat 1
Bearing seat 2
Bearing seat 3 (guide bearing)
Bearing seat 4
Bearing seat 5

Courtesy of BMW OF NORTH AMERICA, INC.

Check 

• Read the code letters and code numbers of crankcase (1)  and crankshaft (2)  .

	Code letter  on crankcase	Code numbers  on the crankshaft
Bearing seat 1
Bearing seat 2
Bearing seat 3 (guide bearing shells)
Bearing seat 4
Bearing seat 5

Courtesy of BMW OF NORTH AMERICA, INC.

Determine classification of the bearing shells. Refer to TABLE FOR CLASSIFICATION OF BEARING SHELLS .

• Insert the bearing shells in bearing seats (1)  , (2)  , (4)  and (5)  .
• Insert bearing shell (3)  in the guide bearing seat on the crankcase.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Insert the bearing shells in bearing caps (1)  , (2)  , (4)  and (5)  .
• Insert bearing shell (3)  into the guide bearing cap.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Install crankshaft.
• Position all main bearing caps with bearing shells.
• Observe the assignment of the crankshaft bearing caps from (1)  to (5)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Replace screws.

  Parts:  Screws

• Fasten the collar screws (M11) in the order (1)  to (10)  .
  Fig 1: Main Bearing Cap Collar Screws Tightening Sequence (M11)

  Courtesy of BMW OF NORTH AMERICA, INC.
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Bearing cap to crankcase (ASA (ASA) collar screw)
  M11x99 Replace screws. Screw in hand-tight.	Joining torque	20 Nm
  	Angle of rotation	125°

• Replace screws.

  Parts:  Screws

• Fasten the collar screws (M8) in the order (1)  to (10)  .
  Fig 2: Main Bearing Cap Collar Screws Tightening Sequence (M8)

  Courtesy of BMW OF NORTH AMERICA, INC.
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Bearing cap to crankcase (ASA collar screw 10.9)
  M8X70 Replace screw.	Joining torque	10 Nm
  	Angle of rotation	63°

• Tighten all threaded support bushings (1)  .
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Threaded support bushing
  Threaded support bushing	Tightening torque	6 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten the main bearing transverse screws on the spacer bolts (1)  , the screws (2)  , and the spacer screw (3)  .
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Angled screw connection to crankcase
  M8x37 flat-head screw/spacer bolt/spacer screw	Joining torque	10 Nm
  	Angle of rotation	45°

  Courtesy of BMW OF NORTH AMERICA, INC.

• Screw central bolt (1)  into the crankshaft by hand.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Check the coefficient of friction at the crankshaft.
• Determine the crankshaft breakaway torque with the special tool 0 490 130 (00 2 010)  .
• Turn the crankshaft on the central bolt with the special tool.
  TECHNICAL DATA SPECIFICATIONS
  
  

  Crankshaft mounted
  Ease of movement of the crankshaft with connecting rod and piston	Tightening torque	0... 5 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Correct the main bearing clearance in case the breakaway torque is too high.
• Unscrew the central bolt (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Secure special tool with magnetic foot on crankcase.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Set the torque wrench (1)  to 20 Nm.
• Attach the special tool 2 446 957  to the torque wrench.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Set dial gauge to zero.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Slide the crankshaft to the front in the arrow direction up to the stop at 20 Nm.
• Observe the deflection of the dial gauge. 

  Courtesy of BMW OF NORTH AMERICA, INC.

• Slide the crankshaft to the rear in the arrow direction up to the stop at 20 Nm.
• Observe the deflection of the dial gauge. 

  Courtesy of BMW OF NORTH AMERICA, INC.

• Compare the side clearance of the crankshaft to the setpoint value and assess.
  TECHNICAL DATA SPECIFICATIONS
  
  

  Crankshaft bearing clearance, axial
  Crankshaft side clearance		0.080... 0.246 mm

• Remove the special tool.

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.

Mounting the beaded metal gaskets 

• Clean sealing surfaces (2)  .
• Replace beaded metal gaskets (1)  .

  Parts:  Sheet metal beaded seals

• Securing the beaded metal gaskets (1)  with the timing case cover screws.
• For timing case cover or timing chain replacement: 

  Loosen screw (3)  .

  Remove jump guard (4)  .

  Position jump guard (4)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

  Tighten down screw (3)  .

  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Jump guard
  M6x25	Tightening torque	10 Nm

• For timing case cover or timing chain replacement: 

Release and remount coolant temperature sensor (1)  .

Tighten the coolant temperature sensor (1)  .

Water/oil temperature sensor
Sensor M12x1.5	Tightening torque	18 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

• The centering pins (1)  must not be damaged, replace if necessary.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Clean sealing surfaces (1)  .

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening the screw connection 1 on the front timing case cover 

• Position the timing case cover.
• Tighten screws in the order (1)  to (2)  .

Timing case cover on bottom crankcase
M8x45, M8x55, M8x65, M8x85	tightening torque	25 Nm

Securing the screw connection 2 on the front timing case cover 

• Tighten screws in the order (3)  to (9)  .

Timing case cover on bottom crankcase
M8x45, M8x55, M8x65, M8x85	tightening torque	25 Nm

Mounting the screw connection 3 on the front timing case cover 

• Position the carrier plate (1)  .
• Tighten screws in the order (10)  to (12)  .

Timing case cover on bottom crankcase
M8x45, M8x55, M8x65, M8x85	tightening torque	25 Nm

• Connect and lock the plug connection (1)  to the coolant temperature sensor (2)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Install the roller chain (1)  .

Courtesy of BMW OF NORTH AMERICA, INC.

Installing the sealing cap with radial shaft seal (oil pan removed) 

Courtesy of BMW OF NORTH AMERICA, INC.

• Clean sealing surface (1)  .
• The sealing cap with radial shaft seal (1)  must not be stored longer than 6 months without support bushing (2)  .
• The support bushing (2)  must remain in the sealing cap with radial shaft seal (1)  until installation as it is used as a slip bushing.

  Courtesy of BMW OF NORTH AMERICA, INC.

  NOTE: The description is based on an installed component.
• Replace the sealing cap with radial shaft seal (1)  .

  Parts:  Sealing cap with radial shaft seal

• Coat the tire tread of the crankshaft with motor oil.

  Courtesy of BMW OF NORTH AMERICA, INC.

  ENGINE OIL DESCRIPTION
  
  

  Technically suitable engine oils for BMW Group engines

• Position and slide on the sealing cap with the radial shaft seal (1)  and the support bushing (2)  on the crankshaft.
• Abut screws (1)  .
• Tighten down screws (2)  .
• Tighten down screws (1)  .

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING PISTON WITH CONNECTING ROD .
• Refer to INSTALLING UPPER OIL SUMP SECTION (ENGINE REMOVED) .
• Refer to INSTALLING THE OIL FILTER ELEMENT .
• Refer to INSTALLING FRONT AXLE DIFFERENTIAL .
• Refer to INSTALLING OIL PUMP .
• Refer to INSTALLING THE LOWER OIL PAN SECTION .
• Refer to INSTALLING THE RIGHT CYLINDER HEAD .
• Refer to INSTALLING BOTH RIGHT VANOS ADJUSTERS .
• Refer to REMOVING THE SPECIAL TOOL TO PRETENSION THE TIMING CHAIN AT CYLINDER BANK 1 .
• Refer to INSTALLING THE HYDRAULIC CHAIN TENSIONER OF CYLINDER BANK 1 .
• Refer to INSTALLING THE SEALING CAP ON THE CYLINDER HEAD OF CYLINDER BANK 1 .
• Refer to INSTALLING THE CYLINDER HEAD COVER ON THE RIGHT .
• Refer to INSTALLING VANOS SOLENOID ACTUATOR, EXHAUST OF CYLINDER BANK 1 .
• Refer to INSTALLING THE VANOS SOLENOID ACTUATOR INTAKE OF CYLINDER BANK 1 .
• Refer to INSTALLING RIGHT HIGH PRESSURE PUMP .
• Refer to INSTALLING THE INJECTORS FOR THE CYLINDERS 1 TO 4 .
• Refer to INSTALLING THE RIGHT HIGH-PRESSURE RAIL .
• Refer to INSTALLING IGNITION COILS OF CYLINDER BANK 1 .
• Refer to PARTIALLY INSTALLING THE GUIDE TUBE FOR THE OIL DIPSTICK .
• Refer to INSTALLING THE LEFT CYLINDER HEAD .
• Refer to INSTALLING BOTH LEFT VANOS ADJUSTERS .
• Refer to REMOVING SPECIAL TOOL TO PRETENSION TIMING CHAIN ON CYLINDER BANK 2 .
• Refer to INSTALLING THE HYDRAULIC CHAIN TENSIONER OF CYLINDER BANK 2 .
• Refer to INSTALLING THE TIMING CASE COVER ON THE CYLINDER HEAD OF CYLINDER BANK 2 .
• Refer to INSTALLING THE LEFT CYLINDER HEAD COVER .
• Refer to INSTALLING OIL FEED LINE ON EXHAUST TURBOCHARGER CYLINDERS 5 TO 8 .
• Refer to INSTALLING VANOS SOLENOID ACTUATOR, INTAKE OF CYLINDER BANK 2 .
• Refer to INSTALLING THE VANOS SOLENOID ACTUATOR EXHAUST OF CYLINDER BANK 2 .
• Refer to INSTALLING THE LEFT HIGH PRESSURE PUMP .
• Refer to INSTALLING FUEL DELIVERY LINE .
• Refer to INSTALLING THE IGNITION COILS OF CYLINDER BANK 2 .
• Refer to INSTALLING BOTH EXHAUST TURBOCHARGERS .
• Refer to INSTALLING FUEL DELIVERY LINE .
• Refer to INSTALLING THE IGNITION COILS OF CYLINDERS 1 AND 5 .
• Refer to INSTALLING THE CLEAN AIR PIPE OF CYLINDER BANK 2 .
• Refer to INSTALLING CLEAN AIR PIPE OF CYLINDER BANK 1 .
• Refer to INSTALLING BOTH CHARGE AIR COOLERS .
• Refer to INSTALLING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE COOLANT CIRCUIT (CHARGE AIR COOLER) .
• Refer to CONNECTING THE LEFT CHARGE AIR LINE TO THE EXHAUST TURBOCHARGER .
• Refer to CONNECTING THE RIGHT CHARGE AIR LINE TO THE EXHAUST TURBOCHARGER .
• Refer to INSTALLING COOLANT PUMPS .
• Refer to INSTALLING THE VIBRATION DAMPER .
• Refer to INSTALLING AIR CONDITIONING COMPRESSOR (ENGINE REMOVED) .
• Refer to INSTALLING THE BELT TENSIONER .
• Refer to INSTALLING DRIVE BELT .
• Refer to INSTALLING THE FLYWHEEL .
• Refer to REMOVING THE ENGINE FROM THE ENGINE SUPPORT BRACKET .