Removing both timing chains and installing or replacing them

Preliminary work 

• Refer to REMOVING THE ENGINE FROM THE LIFTING TABLE .
• Refer to REMOVING THE LEFT INTAKE SILENCER BRACKET .
• Refer to REMOVING RIGHT INTAKE SILENCER HOUSING .
• Refer to PARTIAL UNINSTALLATION OF THE ENGINE VENTILATION LINE OF CYLINDER BANK 1 .
• Refer to REMOVING ENGINE VENTILATION LINE OF CYLINDER BANK 1 .
• Refer to REMOVING THE OXYGEN SENSOR MONITOR FOR THE CYLINDERS 1 TO 4 .
• Refer to REMOVING THE RIGHT INTAKE SILENCER BRACKET .
• Refer to REMOVING THE LOW-TEMPERATURE COOLANT EXPANSION TANK .
• Refer to REMOVING THE CROSS OF THE TRANSMISSION WIRING HARNESS .
• Refer to REMOVING LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 1 TO 4 .
• Refer to REMOVING LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 5 TO 8 .
• Refer to REMOVING UPPER HEAT SHIELD .
• Refer to REMOVING UPPER CATALYTIC CONVERTER NEAR ENGINE FROM CYLINDER BANK 1 .
• Refer to REMOVING THE CATALYTIC CONVERTER NEAR THE ENGINE AT TOP OF CYLINDER BANK 2 .
• Refer to REMOVING THE LEFT AND RIGHT EXHAUST TURBOCHARGER .
• Refer to REMOVING FRONT HEAT SHIELD .
• 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 HEAT SHIELD AT BOTTOM .
• Refer to REMOVING OIL FILLER NECK .
• Refer to REMOVING THE RIGHT UNFILTERED-AIR DUCT .
• Refer to REMOVING DRIVE BELT .
• Refer to REMOVING THE ALTERNATOR .
• Refer to REMOVING LEFT AND RIGHT CHARGE AIR COOLER .
• Refer to REMOVING VANOS SOLENOID ACTUATOR, EXHAUST OF CYLINDER BANK 2 .
• Refer to REMOVING LEFT THROTTLE VALVE ASSEMBLY .
• Refer to REMOVING THE COOLANT LINE BETWEEN THE COOLANT PUMP AND HEAT EXCHANGER .
• Refer to REMOVING IGNITION COIL OF CYLINDER BANK 2 .
• Refer to REMOVING THE IGNITION COILS OF CYLINDERS 1 AND 2 .
• Refer to REMOVING RAIL FROM BANK 2 .
• Refer to RELEASING THE COOLANT LINE FOR THE EXHAUST TURBOCHARGER .
• Refer to PARTIALLY RELEASING THE FUEL SUPPLY LINE ON THE RIGHT .
• Refer to REMOVING FUEL DELIVERY LINE .
• Refer to REMOVING THE HEAT SHIELD OF THE CRANKCASE VENTILATION OF THE CYLINDERS 5 TO 8 .
• Refer to REMOVING LEFT HIGH PRESSURE PUMP .
• Refer to REMOVING WIRING HARNESS SECTION FOR THE IGNITION SYSTEM OF CYLINDER BANK 2 .
• Refer to REMOVING LEFT CYLINDER HEAD COVER .
• Refer to REMOVING THE SEALING CAP ON THE CYLINDER HEAD OF THE CYLINDER BANK 2 .
• Refer to REMOVING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
• 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 SPECIAL TOOL FOR FIXING CAMSHAFTS IN POSITION ON BANK 2 .
• Refer to REMOVING SPECIAL TOOL TO PRETENSION TIMING CHAIN ON CYLINDER BANK 2 .
• Refer to REMOVING LEFT CYLINDER HEAD .
• Refer to REMOVING RIGHT CYLINDER HEAD .
• Refer to REMOVING DRIVE BELT .
• Refer to REMOVING THE ALTERNATOR .
• Refer to REMOVING LEFT THROTTLE VALVE ASSEMBLY .
• Refer to REMOVING HIGH PRESSURE RAIL AT CYLINDER BANK 1 .
• Refer to RELEASING THE COOLANT LINE FOR THE EXHAUST TURBOCHARGER .
• Refer to REMOVING HEAT SHIELD OF THE CRANKCASE VENTILATION FOR CYLINDERS 1 TO 4 .
• Refer to REMOVING RIGHT HIGH-PRESSURE PUMP .
• Refer to PARTIALLY RELEASING THE WIRING HARNESS SECTION FOR THE INTEGRATED POWER SUPPLY MODULE .
• Refer to REMOVING WIRING HARNESS SECTION FOR THE IGNITION SYSTEM OF CYLINDER BANK 1 .
• Refer to REMOVING RIGHT CYLINDER HEAD COVER .
• Refer to REMOVING THE SEALING CAP ON THE CYLINDER HEAD OF THE CYLINDER BANK 1 .
• Refer to REMOVING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
• Refer to MOVING THE CRANKSHAFT INTO THE INSTALLATION POSITION OF CYLINDER BANK 1 .
• 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 THE SPECIAL TOOL TO PRETENSION THE TIMING CHAIN AT CYLINDER BANK 1 .
• Refer to RELEASING AIR CONDITIONING COMPRESSOR .
• Refer to REMOVING THE ENGINE MOUNT .
• Refer to REMOVING FRONT AXLE DIFFERENTIAL .
• Refer to RELEASING THE OIL DRAIN PLUG .
• Refer to REMOVING LOWERING OIL PAN SECTION .
• Refer to REMOVING OIL PUMP .
• Refer to REMOVING UPPER OIL SUMP SECTION .
• Refer to REMOVING THE VIBRATION DAMPER .
• Refer to REMOVING THE COOLANT PUMP .
• Refer to REMOVING TIMING CASE COVER, BOTTOM .
• Refer to REMOVING THE COOLANT LINE BETWEEN THE COOLANT PUMP AND HEAT EXCHANGER PARTIALLY .
• Refer to REMOVING THE ENGINE FROM THE ENGINE SUPPORT BRACKET .

• 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.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the gear from the crankshaft 

• Replace the bearing screws (1).

  Parts:  Bearing screws

Courtesy of BMW OF NORTH AMERICA, INC.

Bearing screw to engine block
Bearing screw M10x1.25 Replace the bearing screw. Clean the thread in the engine block with a screw tap.	Tightening torque	46 Nm

• Clean the thread in the engine block with a screw tap. 

  Replace the bearing screws (2).

• Parts:  Bearing screws

Bearing screw to engine block
Bearing screw M8x1.25 Replace the bearing screw. Clean the thread in the engine block with a screw tap.	Tightening torque	20 Nm

• 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 COOLANT PUMPS .
• Refer to INSTALLING THE VIBRATION DAMPER .
• Refer to INSTALLING THE UPPER OIL SUMP SECTION .
• Refer to INSTALLING FRONT AXLE DIFFERENTIAL .
• Refer to INSTALLING THE ENGINE MOUNT .
• 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 BOTH VANOS ADJUSTERS (CYLINDER HEAD DISASSEMBLY, BANK 1) .
• Refer to INSTALLING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
• Refer to INSTALLING THE CYLINDER HEAD COVER ON THE RIGHT .
• Refer to FASTENING THE COOLANT LINE BETWEEN THE COOLANT PUMP AND THE HEAT EXCHANGER .
• Refer to INSTALLING WIRING HARNESS SECTION FOR IGNITION SYSTEM OF BANK 1 .
• Refer to SECURING THE WIRING HARNESS SECTION FOR THE INTEGRATED POWER SUPPLY MODULE .
• Refer to INSTALLING RIGHT HIGH PRESSURE PUMP .
• Refer to INSTALLING THE HEAT SHIELD OF THE CRANKCASE VENTILATION OF CYLINDERS 1 TO 4 .
• Refer to INSTALLING FUEL DELIVERY LINE .
• Refer to SECURING THE FUEL SUPPLY LINE ON THE LEFT .
• Refer to MOUNTING THE ENGINE TO THE ENGINE SUPPORT BRACKET .
• Refer to SECURING COOLANT LINES FOR THE EXHAUST TURBOCHARGERS .
• Refer to INSTALL RAIL OF CYLINDER BANK 1 .
• Refer to INSTALLING RAIL ON BANK 2 .
• Refer to INSTALLING THE IGNITION COILS OF CYLINDERS 5 AND 6 .
• Refer to INSTALLING IGNITION COILS OF CYLINDER BANK 1 .
• Refer to INSTALLING THE LEFT THROTTLE BODY .
• Refer to INSTALLING ALTERNATOR .
• Refer to INSTALL DRIVE BELT .
• Refer to INSTALLING THE LEFT CYLINDER HEAD .
• Refer to INSTALLING BOTH LEFT VANOS ADJUSTERS (CYLINDER HEAD INSTALLATION CYLINDER BANK 2) .
• Refer to INSTALLING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
• 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 THE LEFT CYLINDER HEAD COVER .
• Refer to INSTALLING LEFT AND RIGHT EXHAUST TURBOCHARGERS .
• Refer to INSTALLING WIRING HARNESS SECTION FOR IGNITION SYSTEM OF BANK 2 .
• Refer to INSTALLING RIGHT HIGH PRESSURE PUMP .
• Refer to INSTALLING THE LEFT HIGH PRESSURE PUMP .
• Refer to INSTALLING THE HEAT SHIELD OF THE CRANKCASE VENTILATION OF CYLINDERS 5 TO 8 .
• Refer to INSTALLING FUEL DELIVERY LINE .
• Refer to ATTACHING THE RIGHT FUEL SUPPLY LINE .
• Refer to SECURING COOLANT LINES FOR THE EXHAUST TURBOCHARGERS .
• Refer to INSTALLING RAIL ON BANK 2 .
• Refer to INSTALLING THE IGNITION COILS OF CYLINDER BANK 2 .
• Refer to INSTALLING THE IGNITION COILS OF CYLINDERS 1 AND 2
• Refer to FASTENING THE COOLANT LINE BETWEEN THE COOLANT PUMP AND THE HEAT EXCHANGER .
• Refer to INSTALLING THE LEFT THROTTLE BODY .
• Refer to INSTALLING THE CHARGE AIR COOLER ON THE RIGHT and INSTALLING THE LEFT-HAND CHARGE AIR COOLER .
• Refer to INSTALLING ALTERNATOR .
• Refer to INSTALL DRIVE BELT .
• Refer to INSTALLING THE RIGHT UNFILTERED-AIR DUCT .
• Refer to INSTALLING OIL FILLER NECK .
• 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 FRONT HEAT SHIELD .
• Refer to INSTALLING LEFT AND RIGHT EXHAUST TURBOCHARGERS .
• Refer to INSTALLING UPPER CATALYTIC CONVERTER NEAR ENGINE FOR BANK 2 .
• Refer to INSTALLING CATALYTIC CONVERTER NEAR THE ENGINE ABOVE CYLINDER BANK 1 .
• Refer to INSTALLING HEAT SHIELD, TOP .
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 1 TO 4 .
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 5 TO 8 .
• Refer to INSTALLING THE CROSSING OF THE TRANSMISSION WIRING HARNESS .
• Refer to INSTALLING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE .
• Refer to INSTALLING BRACKET FOR RIGHT INTAKE SILENCER .
• Refer to INSTALLING THE OXYGEN SENSOR MONITOR FOR CYLINDERS 1 TO 4 .
• Refer to INSTALLING RIGHT INTAKE SILENCER HOUSING .
• Refer to INSTALLING THE LEFT UNFILTERED-AIR DUCT .
• Refer to INSTALLING THE LEFT INTAKE SILENCER BRACKET .
• Refer to INSTALLING THE OXYGEN SENSOR MONITOR FOR CYLINDERS 5 TO 8 .
• Refer to INSTALLING THE ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
• Refer to FASTENING THE ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
• Refer to ATTACHING THE ENGINE TO THE LIFTING TABLE