Install the high-pressure rail on the left

NOTE: TECHNICAL INFORMATION
When assembling, it is essential to observe screwing sequences and tightening torques.
Failure to comply with the regulations can lead to leaks and damage.

NOTE: The description is for one component only. The procedure is identical for all further components.

Loosen screw (1).
Slacken hold-down device (2).

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NOTE: TECHNICAL INFORMATION
Always install the high pressure line or rail free of distortion. To ensure distortion-free installation of the high pressure line and to avoid damaging the thread, it must be possible for both nuts to be screwed on to the injectors easily hand force.
First insert the high-pressure rail at the high pressure pump connector, then lower to the point where the ball heads are positioned inside the injector connections and the high-pressure rail is correctly positioned.

Courtesy of BMW OF NORTH AMERICA, INC.
Then tighten the nuts (1) on the injectors so they are hand-tight.
Next, hand-tighten the nut (2) of the high pressure pump.
Lastly, mount screws (3) and hand-tighten.

Tighten down screws (3).

TIGHTENING TORQUES SPECIFICATION

Rail on cylinder head cover
M6x25	Tightening torque	10 Nm

Tighten the screws (1) the hold-down device.

TIGHTENING TORQUES SPECIFICATION

Hold-down device to cylinder head
M7	Tightening torque	13 Nm

Tighten the nuts (2) on the injectors.

TIGHTENING TORQUES SPECIFICATION

Rail to injector
M12	Joining torque	10 Nm
	Tightening torque	23 Nm

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Tighten nut (3) on the high pressure pump.

TIGHTENING TORQUES SPECIFICATION

Rail to high pressure pump
M14	Joining torque	10 Nm
	Tightening torque	30 Nm

Follow-up work

Refer to INSTALLING SOUND INSULATION ON THE LEFT CYLINDER HEAD COVER .
Refer to MOUNT THE WIRING HARNESS ON THE CYLINDER HEAD COVER ON THE LEFT .
Refer to INSTALL ALL LEFT IGNITION COILS .
Refer to INSTALL LEFT CLEAN AIR PIPE .
Refer to CONNECTING THE LEFT CHARGE AIR LINE TO THE EXHAUST TURBOCHARGER
Refer to INSTALLING THE LEFT UNFILTERED-AIR DUCT .
Refer to INSTALLING INTAKE FILTER HOUSING .
Refer to INSTALL ACOUSTIC COVER .
Refer to INSTALL THE REAR TOP CROSS CONNECTION .
Refer to INSTALL FRONT CROSS CONNECTION .
Refer to INSTALLING FRONT-END STRUT ON LEFT AND RIGHT .
Refer to INSTALLING THE COVER ON THE LEFT AND RIGHT IN THE ENGINE COMPARTMENT AT THE TOP
Refer to DISCONNECTING ALL BATTERY GROUND LEADS .