Check timing of cylinder bank 2

WARNING: Working on 12 V electrical system.
Risk of short circuits! Risk of fire!

Make sure that there is no charger connected to the jump start terminal in the engine compartment.
Detach battery ground lead from battery.
For auxiliary batteries: Detach battery minus cables from all auxiliary batteries.

WARNING: Vehicle may slip off the vehicle hoist if the vehicle hoist is handled incorrectly.
Danger! Immobilization period-threatening injuries!

Observe safety instructions on raising the vehicle using a vehicle hoist.
For additional information see: 00...RAISING THE VEHICLE WITH A VEHICLE LIFT .

CAUTION: Refrigerant circuit under high pressure.
Injury hazard!

Note and follow safety instructions on containers.
Avoid contact with refrigerant; wear safety goggles and hand protection.
For additional information see: 64 50 SAFETY INSTRUCTIONS FOR HANDLING TETRAFLUORETHANE REFRIGERANT R134A and 64 50 NOTES FOR REPAIR WORK ON AIR CONDITIONING

NOTE: RISK OF DAMAGE
Damage to battery terminal, the safety battery terminal or the intelligent battery sensor (IBS).
Damaged battery terminals can lead to malfunctions or vehicle electrical system faults.

Detach battery terminal from battery pole. Do not pry off using a tool.

NOTE: RISK OF DAMAGE
Careless handling of tools and sharp-edged components.
Scratches, surface damage.

Protect working area.
Handle tools and components carefully.

Preliminary work

Refer to SUCTIONING THE AIR CONDITIONING .
Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING THE WHEEL .
Refer to REMOVING THE FRONT SECTION OF THE FRONT WHEEL ARCH COVER .
Refer to REMOVING THE TOP LEFT COVER IN THE ENGINE COMPARTMENT and REMOVE THE TOP RIGHT COVER IN THE ENGINE COMPARTMENT .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING UPPER CROSS CONNECTION .
Refer to REMOVING THE FRONT-END STRUT .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING THE INTAKE FILTER HOUSING ON THE LEFT .
Refer to REMOVING ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
Refer to PARTIALLY DETACHING ACTIVATED CARBON FILTER LINE .
Refer to REMOVING THE OXYGEN SENSOR MONITOR FOR THE CYLINDERS 5 TO 8 .
Refer to REMOVING THE LEFT INTAKE SILENCER BRACKET .
Refer to REMOVING THE LEFT UNFILTERED-AIR DUCT .
Refer to REMOVING RIGHT INTAKE SILENCER HOUSING .
Refer to REMOVING THE COOLANT LINE BETWEEN THE COOLANT PUMP AND HEAT EXCHANGER PARTIALLY .
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 OIL FILLER NECK .
Refer to REMOVING THE RIGHT UNFILTERED-AIR DUCT .
Refer to REMOVING THE FAN COWL .
Refer to REMOVING COVER FOR THE DME CONTROL UNIT ON LEFT .
Refer to REMOVING THE DME CONTROL UNIT FOR CYLINDERS 5 TO 8 .
Refer to REMOVING THE HOLDER FOR THE DME CONTROL UNIT ON THE LEFT .
Refer to REMOVING SAFETY PRESSURE SWITCH .
Refer to DISCONNECTING REFRIGERANT LINE ON THE CONNECTING PIECE .
Refer to REMOVING THE PRESSURE LINE BETWEEN THE EVAPORATOR AND THE AIR CONDITIONING CONDENSER .
Refer to REMOVING DRIVE BELT .
Refer to REMOVING THE BELT TENSIONER .
Refer to REMOVING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE WHEEL ARCH COVER AT THE BOTTOM FRONT LEFT AND BOTTOM RIGHT .
Refer to DRAINING THE COOLANT FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
Refer to DRAINING THE HIGH-TEMPERATURE COOLANT CIRCUIT .
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 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 COOLANT PUMP .

Remove the sealing cap on the cylinder head of the cylinder bank 2

Loosen screws (1) .
Remove the sealing cap (2) on the cylinder head.

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Bring the crankshaft into the installation position of cylinder bank 2

Turn the engine at the central bolt in clockwise direction until the installation position (MP) (1) of the vibration absorber (1) is positioned flush with the marks of the engine block.

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Check the camshaft position of cylinder bank 2.
The cams (1) should be in the position shown.
Make sure that the increment wheels (2) are aligned with the camshaft bearing caps.

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NOTE: Description is for right component only. The procedure on the left side is identical.

NOTE: To provide a better overview: Schematic diagram with partially hidden components.

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Ensure that the polished surfaces of the camshafts (1) point upward.
Ensure that the rounded surfaces (1) are pointing down at the cylinder head.
Check timing again and assess.

Relaxing chain tensioner on bank 2 for checking or setting timing

NOTE: RISK OF DAMAGE
Damage to timing chain or timing chain drive.
Turning the engine without chain tensioner or special tool can result in damage to the timing chain and timing chain drive.

Always turn the engine with the chain tensioner or the special tool.

Make sure that the chain drive is loaded at the same time on the central bolt of the engine and on the VANOS exhaust central valve.
The movement of the chain tensioner piston must be observed in this process.
To do this, carry out the following steps at the same time:
Keep the VANOS central valve on the exhaust side under tension in clockwise direction with a support person.
The VANOS central valve on the exhaust side must not be twisted.

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Rotate the engine counterclockwise at the central bolt.

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Slackening the hydraulic chain tensioner of cylinder bank 2

NOTE: RISK OF DAMAGE
Damage to timing chain or timing chain drive.
Turning the engine without chain tensioner or special tool can result in damage to the timing chain and timing chain drive.

Always turn the engine with the chain tensioner or the special tool.

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Position the special tool 0 491 012 (11 4 120) (3) in the bore and fasten the chain tensioner piston.

Make sure that the chain drive is relieved at the same time on the central bolt of the engine and on the VANOS central valve on the exhaust side.
To do this, carry out the following steps at the same time:
Relieve the chain drive clockwise at the central bolt.

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Relieve the chain drive counterclockwise at the VANOS central valve on the exhaust side.

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Removing hydraulic chain tensioner of cylinder bank 2

NOTE: RISK OF DAMAGE
Damage to timing chain or timing chain drive.
Turning the engine without chain tensioner or special tool can result in damage to the timing chain and timing chain drive.

Always turn the engine with the chain tensioner or the special tool.

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen screws (1) .
Feed out and remove hydraulic chain tensioner (2) .

Preloading the timing chain of cylinder bank 2

NOTE: RISK OF DAMAGE
Damage to timing chain or timing chain drive.
Turning the engine without chain tensioner or special tool can result in damage to the timing chain and timing chain drive.

Always turn the engine with the chain tensioner or the special tool.

Position the special tool 2 249 162 on the cylinder head and apply the screws (1) hand-tight.
Exchange the screw (2) on the special tool 2 249 162 with an (M8x15) hexagon screw.

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Pretension special tool 2 249 162 using special tool 0 496 778 (00 9 460).
The flexible shaft on the special tool 0 496 778 (00 9 460) must not touch any other components, as the torque value will be falsified.

TIGHTENING TORQUE SPECIFICATIONS

Preload timing chain
	tightening torque	0.6 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

Secure the engine in the installation position at the 5th cylinder.

Position special tool 0 496 366 (11 8 570) (3) on the vibration absorber.
Position special tool 0 493 882 (11 9 190) (1) in special tool 0 496 366 (11 8 570).

NOTE: Do not slide the special tool 0 493 882 (11 9 190) (2) too far in; otherwise, it will collide with other components when the crankshaft is turning.

Position reversible ratchet.
Rotate the engine on the central bolt clockwise until the special tool lines up with the engine block marks.
Attach the special tool 0 496 366 (11 8 570) (3) to the vibration absorber with a screw from the belt pulley (2) and hand-tighten.

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With the crankshaft in the installation position, use the special tool 0 493 882 (11 9 190) (1) to insert it onto the marks and fasten.

NOTE: Description is for right component only. The procedure on the left side is identical.

NOTE: To provide a better overview: Schematic diagram with partially hidden components.

Courtesy of BMW OF NORTH AMERICA, INC.

Ensure that the polished surfaces of the camshafts (1) point upward.
Ensure that the rounded surfaces (1) are pointing down at the cylinder head.

Check

Check the camshaft position of cylinder bank 2.
The cams (1) should be in the position shown.

The increment wheels (2) must be flush with the exhaust camshaft bearing cap and the intake camshaft bearing cap.

The ground surfaces of the camshaft must face up.

Courtesy of BMW OF NORTH AMERICA, INC.

Result

» Camshaft position is correct.

Measure

Continue the repair with the next step.

Result

» Camshaft position is not correct.

Measure

Disassemble special tools 0 496 366 (11 8 570) and 0 493 882 (11 9 190) and remove.

Measure

Turn engine at the central bolt of the crankshaft by 360° until the installation position (MP) of the vibration absorber is positioned flush with the marks of the engine block.

Measure

Re-secure the engine in TDC setting with special tools 0 496 366 (11 8 570) and 0 493 882 (11 9 190).

Installing the special tool to secure the camshafts of cylinder bank 2

Check

Position the special tool 2 249 117 (1) on the camshafts of cylinder bank 2.
Check if the camshafts can be fastened with the special tool 2 249 117 (1) .
Check if the special tool 2 249 117 can be brought in contact with the cylinder head using the two screws of the cylinder head cover (2) .

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Result

» The camshafts can be fastened.

Measure

Loosen screws (2) .
Remove the special tool 2 249 117 (1) .

Continue the repair in the next step.

Result

» The camshafts cannot be fastened.

Measure

Adjust the timings of cylinder bank 2.

Remove the special tools to disconnect the crankshaft

Remove special tool 0 493 882 (11 9 190) (1) .
Release the screw (2) of the belt pulley.
Remove special tool 0 496 366 (11 8 570) (3) .

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Removing special tool to pretension timing chain on cylinder bank 2

NOTE: RISK OF DAMAGE
Damage to timing chain or timing chain drive.
Turning the engine without chain tensioner or special tool can result in damage to the timing chain and timing chain drive.

Always turn the engine with the chain tensioner or the special tool.

Release timing chain on the special tool 2 249 162 by turning the hexagon screw (2).
Release special tool 2 249 162 in area (1) and remove.

Courtesy of BMW OF NORTH AMERICA, INC.

Installing the hydraulic chain tensioner of cylinder bank 2

NOTE: RISK OF DAMAGE
Damage to timing chain or timing chain drive.
Turning the engine without chain tensioner or special tool can result in damage to the timing chain and timing chain drive.

Always turn the engine with the chain tensioner or the special tool.

Feed in and position the hydraulic chain tensioner (2) .
Tighten the screws (1) .

TIGHTENING TORQUE SPECIFICATIONS

Chain tensioner to cylinder head
screw	Tightening torque	13 Nm

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Remove the special tool 0 491 012 (11 4 120) or transportation retainer (3) from the bore.

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Installing the sealing cap on the cylinder head of cylinder bank 2

Replace the seal (1) .
Parts: Seal

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Position the sealing cap (2) on the cylinder head.
Tighten down screws (1) .

TIGHTENING TORQUE SPECIFICATIONS

Sealing cap to cylinder head
M6x20 screw	Tightening torque	9.5 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work

Refer to INSTALLING COOLANT PUMPS .
Refer to INSTALLING THE LEFT CYLINDER HEAD COVER .
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 CLOSING THE HIGH-TEMPERATURE COOLANT CIRCUIT .
Refer to CLOSING THE LOW-TEMPERATURE COOLANT CIRCUIT .
Refer to INSTALLING FRONT UNDERBODY PROTECTION .
Refer to INSTALLING THE LOWER LEFT FRONT WHEEL ARCH COVER .
Refer to INSTALLING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
Refer to INSTALLING THE BELT TENSIONER .
Refer to INSTALL DRIVE BELT .
Refer to INSTALLING THE PRESSURE LINE BETWEEN THE EVAPORATOR AND THE AIR CONDITIONING CONDENSER .
Refer to SECURING THE REFRIGERANT LINE TO THE CONNECTING PIECE .
Refer to INSTALLING THE SAFETY PRESSURE SWITCH .
Refer to INSTALLING THE HOLDER FOR THE DME CONTROL UNIT ON THE LEFT .
Refer to INSTALLING THE DME CONTROL UNIT OF CYLINDERS 5 TO 8 .
Refer to INSTALLING COVER FOR THE LEFT DME CONTROL UNIT .
Refer to INSTALLING FAN COWL .
Refer to INSTALLING THE RIGHT UNFILTERED-AIR DUCT .
Refer to INSTALLING OIL FILLER NECK .
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 FASTENING THE ACTIVATED-CHARCOAL FILTER LINE .
Refer to INSTALLING THE ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
Refer to FASTENING THE ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
Refer to INSTALLING LEFT INTAKE SILENCER HOUSING .
Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
Refer to INSTALLING THE FRONT-END STRUT .
Refer to INSTALLING UPPER CROSS CONNECTION .
Refer to INSTALLING ACOUSTIC COVER .
Refer to INSTALLING THE COVER IN THE ENGINE COMPARTMENT AT TOP LEFT and INSTALL THE COVER IN THE ENGINE COMPARTMENT ON THE TOP RIGHT .
Refer to INSTALLING THE FRONT SECTION OF THE FRONT WHEEL ARCH COVER .
Refer to MOUNTING THE WHEEL .
Refer to RECONNECTING ALL BATTERY GROUND LEADS .
Refer to FILLING THE HIGH-TEMPERATURE COOLING SYSTEM WITH THE VACUUM FILLING EQUIPMENT .
Refer to VENTING THE HIGH-TEMPERATURE COOLANT SYSTEM .
Refer to FILLING THE LOW-TEMPERATURE COOLING SYSTEM WITH THE VACUUM FILLING EQUIPMENT .
Refer to VENTING THE LOW-TEMPERATURE COOLING SYSTEM .
Refer to EVACUATE AND CHARGE CONDITIONING .