Checking camshaft timing

NOTE: DANGER
High-voltage system.
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Danger to life through electric shock!

All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
For additional information see:
SAFETY INFORMATION ON HANDLING HYBRID CARS .
For additional information see:
NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .

WARNING: Hot surfaces.
Risk of burning!

Perform all work only on components that have cooled down.

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

When working on the fuel system, make sure that the workbay is sufficiently ventilated, e.g. using extraction unit.
Tightly seal off open lines and connections; collect any escaping fuel directly at the point of exit.
No fire, sparks, open flames or smoking.

CAUTION: On releasing high pressure line, fuel may emerge at high speed.
Danger of injury!

Wear suitable personal protective equipment.
Allow the cooling system to cool down to a temperature below 40°C before starting installation work.
Note warnings on cylinder head cover.

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

Preliminary works

Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE SEAL FOR THE REAR BONNET .
Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
Refer to REMOVING LEFT AND RIGHT WIPER ARM .
Refer to REMOVING COWL PANEL COVER .
Refer to REMOVING TRAILING LINK AT SPRING BOLT .
Refer to REMOVING THE CENTER BULKHEAD UPPER PART .
Refer to REMOVING THE RIGHT SEALING FRAME .
Refer to LOOSENING HIGH-VOLTAGE CABLES ON THE ELECTRICAL MACHINE ELECTRONICS .
Refer to REMOVING ACOUSTIC COVER AT REAR .
Refer to REMOVING LEFT SEALING FRAME .
Refer to REMOVING THE CENTER BULKHEAD LOWER SECTION .
Refer to REMOVING INTAKE SILENCER HOUSING .
Refer to REMOVING RESONATOR .
Refer to REMOVING CLEAN AIR PIPE .
Refer to REMOVING CHARGE AIR LINE .
Refer to REMOVING THE CYLINDER HEAD COVER ACOUSTIC COVER .
Refer to REMOVING IGNITION COILS .
Refer to REMOVING ALL SPARK PLUGS .
Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE HIGH PRESSURE PUMP AND THE RAIL .
Refer to REMOVING FUEL DELIVERY LINE .
Refer to REMOVING HIGH PRESSURE PUMP .
Refer to REMOVING INJECTORS .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
Refer to REMOVING THE UNDERBODY PROTECTION OF THE STEERING GEAR AND FRONT STIFFENING PLATE RESPECTIVELY .
Refer to REMOVING REAR STIFFENING PLATE .
Refer to DRAINING THE COOLANT FROM THE HIGH-TEMPERATURE COOLING SYSTEM .
Refer to REMOVING THE ACOUSTIC COVER FOR THE ENGINE AT THE FRONT .
Refer to REMOVING AUXILIARY COOLANT PUMP FOR THE EXHAUST TURBOCHARGER .
Refer to REMOVING FRONT ENGINE ENCAPSULATION .
Refer to REMOVING BOTH ACTUATORS .
Refer to REMOVING THE CYLINDER HEAD COVER .
Refer to PARTIALLY RELEASING ACOUSTIC COVER OF OIL SUMP .
Refer to REMOVING THE THERMOSTAT FROM THE TRANSMISSION OIL LINES .

Have the special tool 2 358 122 ready.

Number	Description
1	Basic carrier
2	Basic carrier screws on cylinder head
3	Gauge to fix exhaust camshaft
4	Gauge to fix intake camshaft
5	Screw gauge on basic carrier

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Have the special tool 2 288 380 ready.

Number	Description
1	Locating stud

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Have the special tool 0 493 380 (11 6 480) ready.

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If applicable, remove the cover (1).

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NOTE:
RISK OF DAMAGE
Damage to the engine.
The engine may be damaged if it is manually rotated in the wrong direction.
- Turn the combustion engine exclusively by hand in the correct direction of rotation: a) Clockwise, facing the vibration damper or b) Counter-clockwise, facing the chain drive, (b) only applies when the rear timing chain is installed.
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Turn the engine with the special tool 0 493 380 (11 6 480) to the TDC firing position of cylinder (1).
Thread the sealing cap (1) out and remove.

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Make sure that special tool 2 288 380 is inserted in the dowel hole up to dimension (X).
Dimension (X) = 55 mm

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Check whether the correct dimension has been achieved.
The special tool 2 288 380 is incorrectly positioned.

The TDC firing position (1) of cylinder 1 was not reached.

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Check whether the correct dimension has been achieved,
The special tool 2 288 380 is correctly positioned.

The engine is in the TDC firing position (1) of the 1 st cylinder.

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Check
- Check if the marks (1) for the intake and exhaust camshaft can be read from the top.
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Result

» Marks (1) cannot be read from the top.

Measure
- Turn the camshafts to the correct position or readjust the timing.
Check
- Check whether the middle one of the 3 flattened areas (1) on both camshafts points upwards. The special tool 2 358 122 can also be mounted when the camshafts are twisted by 180° (center flattened area points downwards).
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Result

» The middle one of the 3 flattened areas (1) does not point upwards.

Measure
- Turn the camshafts to the correct position so that the middle one of the 3 flattened areas (1) on both camshafts points upwards.
The cam on the exhaust camshaft on the first cylinder points obliquely inwards to the right.

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The cam on the intake camshaft on the first cylinder points obliquely to the left.

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Secure the basic carrier (1) of the special tool 2 358 122 with the screws (2) on the cylinder head.
Position gauge (3) with the recess on the exhaust camshaft and fix with the screws (5) on the basic carrier (1).
Position gauge (4) with the recess on the intake camshaft and fix with the screws (5) on the basic carrier (1).
NOTE: If special tool 2 358122 cannot be mounted, the timing must be readjusted.

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up Work

Refer to INSTALLING THE THERMOSTAT ON THE TRANSMISSION OIL LINES .
Refer to SECURING THE OIL SUMP ACOUSTIC COVER .
Refer to INSTALLING CYLINDER HEAD COVER .
Refer to INSTALLING BOTH ACTUATORS .
Refer to PREPARING THE INJECTORS FOR INSTALLATION .
Refer to INSTALLING INJECTORS .
Refer to PREPARING FOR THE INSTALLATION OF THE HIGH PRESSURE PUMP .
Refer to INSTALLING HIGH PRESSURE PUMP .
Refer to INSTALLING FUEL DELIVERY LINE .
Refer to INSTALLING THE HIGH-PRESSURE LINE BETWEEN THE HIGH-PRESSURE PUMP AND THE HIGH-PRESSURE RAIL .
Refer to INSTALLING ALL SPARK PLUGS .
Refer to INSTALLING THE IGNITION COILS .
Refer to INSTALLING CENTER BULKHEAD LOWER SECTION .
Refer to INSTALLING ACOUSTIC COVER AT REAR .
Refer to FASTENING HIGH-VOLTAGE CABLES ON THE ELECTRICAL MACHINE ELECTRONICS .
Refer to INSTALLING RIGHT SEALING FRAME .
Refer to INSTALLING LEFT SEALING FRAME .
Refer to INSTALLING THE CENTER BULKHEAD UPPER PART .
Refer to INSTALLING TENSION STRUT ON SHOCK TOWER .
Refer to INSTALLING COWL PANEL COVER .
Refer to INSTALLING LEFT AND RIGHT WIPER ARM .
Refer to INSTALLING THE COVER OF THE ENGINE COMPARTMENT ON THE REAR LEFT .
Refer to INSTALLING THE SEAL FOR THE BONNET .
Refer to INSTALLING FRONT ENGINE ENCAPSULATION .
Refer to INSTALLING AUXILIARY COOLANT PUMP FOR THE EXHAUST TURBOCHARGER .
Refer to INSTALLING THE ACOUSTIC COVER FOR THE ENGINE AT THE FRONT .
Refer to CONNECTING THE COOLANT LINE OF HIGH-TEMPERATURE COOLANT CIRCUIT .
Refer to INSTALLING CHARGE AIR LINE .
Refer to INSTALLING CLEAN AIR PIPE .
Refer to INSTALLING RESONATOR .
Refer to INSTALLING THE CYLINDER HEAD COVER ACOUSTIC COVER .
Refer to INSTALLING INTAKE SILENCER HOUSING .
Refer to FILLING THE HIGH-TEMPERATURE COOLING SYSTEM WITH THE VACUUM FILLER DEVICE .
Refer to BLEEDING THE HIGH-TEMPERATURE COOLANT CIRCUIT .
Refer to CHECKING/TOPPING UP OIL LEVEL IN AUTOMATIC TRANSMISSION .
Refer to INSTALLING ACOUSTIC COVER .
Refer to INSTALLING THE REAR STIFFENING PLATE .
Refer to INSTALLING THE UNDERBODY PROTECTION OF THE STEERING GEAR OR THE FRONT STIFFENING PLATE .
Refer to INSTALLING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
Refer to TAKING BONNET OUT OF THE SERVICE POSITION .