11 12 000 Removing and Installing or Sealing Cylinder Head Cover (N54)

Special tools required: 

• 11 8 620

Necessary preliminary tasks: 

• Disconnect negative battery lead.
• Remove acoustic cover.
• Remove rod-type ignition coils. (See 12 13 511 REPLACING SPARK PLUGS (N54, N53) )
• Unclip wiring harness for injectors. (See 12 51 100 REPLACING WIRING HARNESS SECTION FOR IGNITION COIL (N54) )
• Remove injectors.
• Remove tension strut. (See 51 71 371 REMOVING AND INSTALLING/REPLACING TENSION STRUT ON LEFT OR RIGHT SPRING STRUT DOME and/or 51 71 371 REMOVING AND INSTALLING/REPLACING TENSION STRUT ON LEFT OR RIGHT SPRING STRUT DOME )
• Remove fresh air duct. (See 51 13 116 REMOVING AND INSTALLING COWL PANEL COVER and/or 51 13 116 REMOVING AND INSTALLING COWL PANEL COVER )

Disconnect vacuum lines (2) from vacuum lines (1).

Unclip vacuum lines (1).

Disconnect vacuum lines (1) from vacuum lines (2).

Unclip vacuum line (2) and lay to one side.

Release screw (1) with special tool 11 8 620. (See 11 8 620 WRENCH SOCKET WAF 10 )

Release screws (1) on valve cover.

Release screws (1 and 2).

Tightening torque, see 11 12 4AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO

Installation: 

Replace seal (1).

Press gasket (1) into valve cover.

Assemble engine.