Removing Oil Feed Line - Cylinders 4-6

→ Protect components from dirt and contamination.

→ Clean or replace dirty components.

Oil feed line, cylinder bank 4-6 

1. Attachment to turbocharger 4-6
2. Attachment to bracket for turbocharger 4-6
3. Attachment to cylinder head 4-6

1. Oil supply line for turbocharger 4-6
2. External Torx screw M6 x 12
3. Internal Torx screw, M6 x 10
4. O-ring, 8.00 x 2.50 N
5. O-ring, 12.00 x 2.50 N
   Fig 1: Exploded View Of Oil Feed Line, Cylinder Bank 4-6

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Remove intake manifold, cylinder bank 4-6.
   1. 1.1. Disconnect cable plug from electronic adjuster -1-  .
   2. 1.2. Unscrew two M6 x 12 external Torx screws -Pfeile-  .
      Fig 2: Locating Intake Manifold And External Torx Screws

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   3. 1.3. Detach intake manifold at connection piece and detach from bracket on engine.
   4. 1.4. Detach vacuum line -3-  from ambient air valve.
   5. 1.5. Disconnecting positive crankcase ventilation -4-  .
   Fig 3: Identifying Intake Manifold, Bank 4-6

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Detach holding clamp -2-  for oil feed line -1-  on bracket.
   1. 2.1. Unscrew M6 x 12 external Torx screw.
      Fig 4: Identifying Holding Clamp For Oil Feed Line On Bracket

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Detach oil feed line from cylinder head 4-6.
   NOTE: Mixing fluids

   • Risk of damage to components

   → Close off all openings immediately after exposing them (with adhesive tape, suitable stoppers).

   1. 3.1. Unscrew M6 x 12 external Torx screw -3-  and detach oil feed line.
4. Unscrew M6 x 12 external Torx screw -2-  on coolant line bracket.
   Fig 5: Identifying Coolant Lines And Oil Line, Cylinder Bank 4-6

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   NOTE: Mixing fluids

   • Risk of damage to components

   → Close off all openings immediately after exposing them (with adhesive tape, suitable stoppers).

5. Detach three lines at turbocharger and lay lines aside.

   Close off bores immediately after detaching a line  .

   1. 5.1. Detach vent line -1-  to turbocharger oil tank. Unscrew M6 x 10 internal Torx screw and detach line.
   2. 5.2. Detach lower coolant line -2-  . Unscrew M6 x 10 internal Torx screw and detach line.
   3. 5.3. Detach upper coolant line -3-  . Unscrew M6 x 10 internal Torx screw and detach line.
   4. 5.4. Removal is the same as for bank 1-3.
      1. Vent line to turbocharger oil tank.
      2. Lower coolant line.
      3. Upper coolant line.
         Fig 6: Identifying Vent Line To Turbocharger Oil Tank, Upper And Lower Coolant Line

         Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Detach oil feed line -2-  from turbocharger.
   NOTE: Mixing fluids

   • Risk of damage to components

   → Close off all openings immediately after exposing them (with adhesive tape, suitable stoppers).

   1. 6.1. Unscrew M6 x 10 internal Torx screw and detach line.
      Fig 7: Identifying Oil Feed Line On Turbocharger

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
7. Guide out oil feed line.
8. Replace O-rings on all lines and clean connections. 
9. Make sure to check connection bores on turbocharger for dirt and clean carefully.