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Home >> Porsche >> 2016 >> Panamera 4S >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> 26 - Exhaust System -- PANAMERA (970) >> WM 267619 Removing And Installing Primary Catalytic Converter (LP) (PANAMERA, PANAMERA 4) >> Removing Primary Catalytic Converter >> Removing Primary Catalytic Converter On Left Side

Removing Primary Catalytic Converter On Left Side

  1. Primary catalytic converter on left side
  2. Bottom holder on transmission housing
  3. Top holder on transmission bell housing
  4. Clamp on flange for turbocharger
    5. Fig 1: Component overview - primary catalytic converter, left
    G09806138Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Unclip electric plug connections -1-  for the oxygen sensors in the engine compartment at the left and remove them sideways -arrows-  . Release and disconnect electric plug connections.
    Fig 2: Disconnecting Plug Connection For Oxygen Sensors At Left
    G09806139Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  2. Check that the cables are routed correctly!
    Fig 3: Identifying Oxygen sensor cable routing (left)
    G09806140Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  3. Unclip cable on the left cylinder bank.
  4. Remove heat shield -1-  on the drive shaft.
    1. 4.1. Unscrew fastening screws -2-  .
    2. 4.2. Set the heat shield down on the drive shaft.
      3. Fig 4: Identifying Screws On Heat Shield
      G09806141Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  5. Unclip cables at the transmission housing and at the pressure lines.
  6. Pull oxygen sensor cables downwards.
    1. 6.1. Fasten the cables to a suitable cord so that you can pull them up again during installation.
    2. 6.2. Pull the cables down past the high-pressure pump.
  7. Loosen clamping sleeve -1-  for the exhaust pipe.
    1. 7.1. Loosen clamping screws -2-  .
    2. 7.2. Slide clamping sleeves -1-  to the rear -arrow-  .
      3. Fig 5: Loosening Clamping Sleeve On Left Exhaust Pipe
      G09806142Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  8. Unscrew nut -1-  on the bottom holder -2-  .
    Fig 6: Identifying Holder (Lower Left)
    G09806143Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  9. Unscrew screw -1-  on the top holder -2-  .
    Fig 7: Identifying Top Holder And Screw
    G09806144Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Information 

    • Access to the clamps between the heat shield on the all-wheel drive transmission at the front and the turbocharger is very restricted. 
    • Use a narrow tool (sockets, extensions). Use jointed sockets if necessary. 
  10. Unscrew screw -1-  on the clamp -2-  and remove clamp -2-  .
    Fig 8: Loosening Clamp And Screw
    G09806145Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  11. Remove primary catalytic converter.
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