Removing both timing chains and installing or replacing them

WARNING: Working on fuel system .
Risk of fire! Danger of explosion!

When working on the fuel system, make sure the workstation has sufficient ventilation, e.g., by means of extraction.
Tightly seal off open lines and connections; collect any leakage fuel directly at the point of exit.
No fire, sparks, open flames or smoking.

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

Preliminary work

Refer to RELEASING THE OIL DRAIN PLUG .
Refer to REMOVING THE OIL FILTER ELEMENT .
Refer to REMOVING THE FRONT AXLE COMPLETELY WITH THE ENGINE AND TRANSMISSION .
Refer to INSTALLING THE ENGINE ON THE ASSEMBLY JIG .
Refer to REMOVING IGNITION COILS FROM THE CYLINDER BANK 2 .
Refer to REMOVING IGNITION COILS FROM CYLINDER BANK 1 .
Refer to REMOVING THE SOUND INSULATION OF INJECTORS ON LEFT .
Refer to REMOVING THE HIGH-PRESSURE RAIL ON THE LEFT .
Refer to REMOVING LEFT HIGH PRESSURE PUMP .
Refer to DISCONNECTING PLUG CONNECTIONS OF THE INJECTORS OF CYLINDER BANK 2 .
Refer to REMOVING THE INJECTORS FOR CYLINDERS 5 TO 8 .
Refer to REMOVING CARRIER PLATE .
Refer to RELEASING LEFT CHARGE AIR LINE PARTIALLY .
Refer to PARTIALLY RELEASING THE RIGHT CHARGE AIR LINE .
Refer to REMOVING LEFT CHARGE AIR COOLER .
Refer to REMOVING RIGHT CHARGE AIR COOLER .
Refer to REMOVING THE INTAKE PIPE THE ENGINE VENTILATION LINE .
Refer to REMOVING ENGINE VENT LINE OF CYLINDERS 1 TO 4 .
Refer to REMOVING ENGINE VENT LINE OF CYLINDERS 5 TO 8 .
Refer to REMOVING LEFT CLEAN AIR PIPE .
Refer to REMOVING RIGHT CLEAN AIR PIPE .
Refer to REMOVING DRIVE BELT .
Refer to REMOVING THE COOLANT PUMP .
Refer to REMOVING THE BELT TENSIONER .
Refer to REMOVING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
Refer to REMOVING THE AIR CONDITIONING COMPRESSOR (ENGINE REMOVED) .
Refer to REMOVING THE EXHAUST TURBOCHARGER FOR THE CYLINDERS 5 TO 8 .
Refer to RELEASING THE WIRING HARNESS SECTION FROM THE LEFT HAND CYLINDER HEAD COVER .
Refer to REMOVING FUEL DELIVERY LINE .
Refer to REMOVING VANOS SOLENOID ACTUATOR, EXHAUST OF CYLINDER BANK 2 .
Refer to REMOVING VANOS SOLENOID ACTUATOR, INTAKE 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 MOVING THE CRANKSHAFT TO THE INSTALLATION POSITION TO ADJUST THE TIMINGS .
Refer to CHECK 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 FIXING THE ENGINE IN THE INSTALLATION POSITION ON CYLINDER 1 (SET VALVE TIMINGS) .
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 GUIDE TUBE FOR OIL DIPSTICK .
Refer to REMOVING RIGHT RAIL .
Refer to REMOVING RIGHT HIGH-PRESSURE PUMP .
Refer to PARTIALLY RELEASING THE WIRING HARNESS SECTION OF THE RIGHT CYLINDER HEAD COVER .
Refer to REMOVING THE INJECTORS FOR CYLINDERS 1 TO 4 .
Refer to REMOVING VANOS SOLENOID ACTUATOR, EXHAUST OF CYLINDER BANK 1 .
Refer to REMOVING THE VANOS SOLENOID ACTUATOR INTAKE 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 MOVING THE CRANKSHAFT TO THE INSTALLATION POSITION TO ADJUST THE TIMINGS .
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 FIXING THE ENGINE IN THE INSTALLATION POSITION ON CYLINDER 1 (SET VALVE TIMINGS) .
Refer to REMOVING BOTH RIGHT VANOS ADJUSTERS .
Refer to REMOVING SPECIAL TOOL FOR FIXING CAMSHAFTS ON BANK 1 .
Refer to REMOVING THE SPECIAL TOOL TO PRETENSION THE TIMING CHAIN AT CYLINDER BANK 1 .
Refer to REMOVING RIGHT CYLINDER HEAD .
Refer to REMOVING LOWER OIL PAN SECTION .
Refer to REMOVING OIL PUMP .
Refer to REMOVING FRONT AXLE DIFFERENTIAL .
Refer to REMOVING THE VIBRATION DAMPER .
Refer to REMOVING UPPER OIL SUMP SECTION .
Refer to REMOVING TIMING CASE COVER, BOTTOM .

Remove the slide rail (1).

G14253195

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.

G14253163

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).

G14253193

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.

G14253165

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the gear from the crankshaft

Replace the bearing screws (1).

Parts: Bearing screws

TIGHTENING TORQUE SPECIFICATIONS

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 .

Courtesy of BMW OF NORTH AMERICA, INC.

Replace the bearing screws (2).

Parts: Bearing screws

TIGHTENING TORQUE SPECIFICATIONS

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 impurities in the area of the chain drive, clean if necessary .

G14240344

Courtesy of BMW OF NORTH AMERICA, INC.

Install the gear on the crankshaft

NOTE: TECHNICAL INFORMATION
Wear protective gloves.

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.

G14240345

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.

G14253165

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).

G14253193

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.

G14253194

Courtesy of BMW OF NORTH AMERICA, INC.

Attach and position the slide rail (1).

G14253195

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work

Refer to INSTALLING TIMING CASE COVER, BOTTOM .
Refer to INSTALLING THE UPPER OIL SUMP SECTION .
Refer to INSTALLING THE VIBRATION DAMPER .
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 THE INJECTORS FOR THE CYLINDERS 1 TO 4 .
Refer to SECURING THE WIRING HARNESS SECTION OF THE CYLINDER HEAD COVER ON THE RIGHT .
Refer to INSTALLING RIGHT HIGH PRESSURE PUMP .
Refer to INSTALLING FUEL DELIVERY LINE .
Refer to INSTALLING THE RIGHT HIGH-PRESSURE RAIL .
Refer to INSTALLING GUIDE TUBE FOR OIL DIPSTICK .
Refer to INSTALLING THE OIL FILLER CAP .
Refer to INSTALLING IGNITION COILS FROM CYLINDER BANK 1 .
Refer to INSTALLING THE ENGINE VENTILATION LINE OF CYLINDERS 1 TO 4 .
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 SEALING CAP ON THE CYLINDER HEAD OF CYLINDER BANK 2 .
Refer to INSTALLING THE LEFT CYLINDER HEAD COVER .
Refer to INSTALLING THE VANOS SOLENOID ACTUATOR EXHAUST OF CYLINDER BANK 2 .
Refer to INSTALLING VANOS SOLENOID ACTUATOR, INTAKE OF CYLINDER BANK 2 .
Refer to INSTALLING FUEL DELIVERY LINE .
Refer to SECURING THE WIRING HARNESS SECTION FROM THE CYLINDER HEAD COVER ON THE LEFT .
Refer to INSERT THE EXHAUST TURBOCHARGER FOR THE CYLINDERS 5 TO 8 .
Refer to INSTALLING THE ENGINE VENTILATION LINE OF CYLINDERS 5 TO 8 .
Refer to INSTALLING THE INTAKE PIPE OF THE ENGINE VENTILATION LINE .
Refer to INSTALLING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
Refer to INSTALLING THE BELT TENSIONER .
Refer to INSTALLING COOLANT PUMPS .
Refer to INSTALLING RIGHT CLEAN AIR PIPE .
Refer to INSTALLING LEFT CLEAN AIR PIPE .
Refer to PARTIALLY INSTALLING LEFT ENGINE VENTILATION LINE .
Refer to INSTALLING THE RIGHT-HAND CHARGE AIR COOLER .
Refer to INSTALLING THE LEFT-HAND 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 THE CARRIER PLATE .
Refer to PREPARING THE INJECTORS FOR INSTALLATION .
Refer to INSTALLING THE INJECTORS FOR THE CYLINDERS 5 TO 8 .
Refer to CONNECTING THE CONNECTOR OF THE INJECTORS OF CYLINDER BANK 2 .
Refer to INSTALLING THE LEFT HIGH PRESSURE PUMP .
Refer to INSTALLING THE HIGH-PRESSURE RAIL ON THE LEFT .
Refer to INSTALLING THE SOUND INSULATION OF THE INJECTORS, LEFT .
Refer to INSTALLING IGNITION COILS OF THE CYLINDER BANK 2 .
Refer to INSTALLING IGNITION COIL ON CYLINDER 1 .
Refer to INSTALLING AIR CONDITIONING COMPRESSOR (ENGINE REMOVED) .
Refer to INSTALLING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
Refer to INSTALLING THE BELT TENSIONER .
Refer to INSTALLING DRIVE BELT .
Refer to REMOVING THE ENGINE FROM THE ENGINE SUPPORT BRACKET .
Refer to INSTALLING THE COMPLETE FRONT AXLE INCLUDING ENGINE AND TRANSMISSION .
Refer to INSTALLING THE OIL FILTER ELEMENT .
Refer to TIGHTENING THE OIL DRAIN PLUG .
Refer to FILLING ENGINE OIL .