Installing the right high-pressure rail

• Loosen screws (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.

  Courtesy of BMW OF NORTH AMERICA, INC.

• First insert the rail (2) at the high pressure pump connector, then lower it to the point where the ball heads are positioned inside the injector connections and the rail is correctly positioned.
• Then tighten the nuts (1) on the injectors so they are hand-tight.
• Next, hand-tighten the nut (3) of the high pressure pump.
• Lastly mount screws (4) and hand-tighten.
• Tighten down screws (4).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Rail to cylinder head cover
  M6x25 screw	Tightening torque	10 Nm

  NOTE: The description is provided only at one component. The procedure is the same for all other components.
• Tighten down screws (1).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

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

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• Tighten nuts (1) on the injectors with the special tool 0 495 908 (37 1 150). 
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  High-pressure rail to injectors
  Nuts	Tightening torque	25 Nm

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• 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

• Tighten down screws (4).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Rail to cylinder head cover
  M6x25 screw	Tightening torque	10 Nm

• Connect plug connection (1) and lock.

  Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING THE SOUND INSULATION OF THE INJECTORS, RIGHT .
• Refer to INSTALLING IGNITION COILS OF CYLINDER BANK 1 .
• Refer to INSTALLING BRACKET FOR RIGHT INTAKE SILENCER .
• Refer to INSTALLING THE RIGHT INTAKE SILENCER HOUSING .
• Refer to INSTALLING ACOUSTIC COVER .