Turning the piston to the TDC

DANGER

High-voltage system.

The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard 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: 61 00... SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .
For additional information see: 61 25... 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 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.

CAUTION: On releasing high pressure line, fuel may emerge at high speed.
Injury hazard!

Wear suitable personal protective equipment.
Before performing any installation work, allow cooling system to cool down to less than 40°C.
Note warnings on cylinder head cover.

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

Preliminary work

Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE SEAL FOR THE HOOD REAR .
Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
Refer to REMOVING LEFT AND RIGHT WIPER ARM .
Refer to REMOVING THE COWL COVER .
Refer to REMOVING TRAILING LINK AT SPRING BOLT .
Refer to REMOVING THE CENTER COWL UPPER PART .
Refer to RELEASING THE HIGH-VOLTAGE CABLES ON THE EME .
Refer to REMOVING ACOUSTIC COVER AT REAR .
Refer to REMOVING BOTH ACTUATORS .
Refer to REMOVING ALL IGNITION COILS .
Refer to REMOVING FUEL DELIVERY LINE .
Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE HIGH PRESSURE PUMP AND THE RAIL .
Refer to REMOVING HIGH PRESSURE PUMP .
Refer to REMOVING THE HIGH-PRESSURE RAIL WITH INJECTORS OF CYLINDERS 1 TO 3 .
Refer to REMOVING THE HIGH-PRESSURE RAIL WITH INJECTORS OF CYLINDERS 4 TO 6 .
Refer to REMOVING THE CYLINDER HEAD COVER .
Refer to REMOVING THE COVER FOR THE CENTER ENGINE COMPARTMENT .
Refer to REMOVING BOTH FRONT-END STRUTS .
Refer to REMOVING FRONT CROSS CONNECTION (FRONT-END STRUT REMOVED) .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING FAN COWL .
Refer to REMOVING THE INTAKE FILTER HOUSING (TENSION STRUT ON SHOCK TOWER REMOVED) .
Refer to REMOVING THE RESONATOR WITH THE TOP CLEAN AIR PIPE .
Refer to REMOVING THE DME CONTROL UNIT .
Refer to REMOVING THE INTEGRATED POWER SUPPLY MODULE (PDM) .
Refer to REMOVING CONTROL UNIT BRACKET .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
Refer to REMOVING THE UNDERBODY PROTECTION OF THE STEERING GEAR AND THRUST FIELD RESPECTIVELY .
Refer to DRAINING THE COOLANT FROM THE LOW-TEMPERATURE COOLING SYSTEM .
Refer to CONNECTING THE COOLANT LINE OF LOW-TEMPERATURE COOLANT CIRCUIT .
Refer to REMOVING TANK VENT VALVE .
Refer to REMOVING THE INTAKE PLENUM .

NOTE: RISK OF DAMAGE
Damage to the engine.
If the engine is manually rotated in the wrong direction of rotation, the engine can be damaged.

Only rotate the engine manually in the correct direction of rotation: a) clockwise when looking at the damper, or b) counterclockwise when looking at the chain drive. b) applies only if the timing chain is installed in the rear.

NOTE: TECHNICAL INFORMATION
The OT finder from the special tool 2 302 630 absolutely must be vertical, otherwise the measurement result can be falsified.

NOTE: The description is provided only at one cylinder. The procedure is the same for all other cylinders.

Keep set of special tools 2 302 630 at hand:

Number	Description
1	Pressure gauge
2	OT Finder
3	Adapter for the spark plug thread (60)
4	Adapter for the spark plug thread

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Have the special tool 0 493 380 (11 6 480) 2 468 560 ready.

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Have the adapter for the spark plug thread (60) (1) ready.

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Screw in the adapter for the spark plug thread (60) (1) into the spark plug thread by hand.

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Tighten the adapter for the spark plug thread (60) (1) with a standard tool (2) .

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Connect the OT finder (1) to the adapter for the spark plug thread (60) (2) .
The OT finder (1) must engage audibly.

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NOTE: TECHNICAL INFORMATION
The OT finder from the special tool 2 302 630 absolutely must be vertical, otherwise the measurement result can be falsified.
Fit special tool 0 493 380 (11 6 480) .
Turn the engine by hand with the special tool 0 493 380 (11 6 480) .
If the piston goes upwards, the bubble level (2) in the cylinder tube (1) also goes upward in the arrow direction.

Courtesy of BMW OF NORTH AMERICA, INC.
Turn the piston to TDC.
At TDC, both the piston and bubble level (2) are at the highest point in the cylinder tube (1) .

» Valves are closed.
Make sure the engine does not turn further.