Installing the right high-pressure rail

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

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

Courtesy of BMW OF NORTH AMERICA, INC.

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 TORQUE SPECIFICATIONS

Rail to cylinder head cover
M6x25 screw	Tightening torque 10 Nm

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

TIGHTENING TORQUE SPECIFICATIONS

Hold-down device to cylinder head cover
screw	Tightening torque 13 Nm

Tighten nuts (2) on the injectors with the special tool 0 495 908 (37 1 150).

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUE SPECIFICATIONS

High-pressure rail to injectors
Nuts	Tightening torque 23 Nm

Tighten nut (3) on the high pressure pump with the special tool 0 491 277 (13 5 020) .

TIGHTENING TORQUE SPECIFICATIONS

Fuel supply line/rail to high pressure pump
Nut	tightening torque 30 Nm

Follow-up work

Refer to PARTIALLY ATTACHING THE WIRING HARNESS FROM THE RIGHT CYLINDER HEAD COVER .
Refer to INSTALLING THE IGNITION COILS OF CYLINDERS 1 TO 4 .
Refer to INSTALLING THE INTAKE PIPE OF CRANKCASE VENTILATION .
Refer to INSTALLING THE RIGHT UNFILTERED-AIR DUCT .
Refer to INSTALLING THE HOLDER FOR THE DIGITAL MOTOR ELECTRONICS CONTROL UNIT ON THE RIGHT .
Refer to INSTALLING COVER FOR THE RIGHT DME CONTROL UNIT .
Refer to INSTALLING THE TENSION STRUT ON THE RIGHT SHOCK TOWER .
Refer to INSTALLING RIGHT CLEAN AIR PIPE .
Refer to CONNECTING THE RIGHT CHARGE AIR LINE TO THE EXHAUST TURBOCHARGER .
Refer to INSTALLING INTAKE FILTER HOUSING .
Refer to INSTALLING THE RIGHT STRUT BRACE .
Refer to INSTALLING THE STRUT BRACE .
Refer to INSTALLING ACOUSTIC COVER .
Refer to CONNECTING ALL BATTERY GROUND LEADS . .