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Home >> Porsche >> 2021 >> Panamera Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 46 (10 Engine - Crankcase, Suspension 4.0L Turbo Gas -- 971 - PANAMERA (971)) >> WM, 100137 Disassembling And Assembling Engine (V8 BITURBO) >> Preliminary Work

Preliminary Work

WARNING: This page is about a different variant/trim than selected.
CAUTION: Ingress of dirt 
  • Danger of material damage due to blocked oil bores/oil ducts 

    → Absolute cleanliness is essential when working on the engine.

    → Lay removed engine parts on a clean base and make sure to cover them.

CAUTION: Heavy components 
  • Risk of squashing 

    → Wear personal protective gear.

    → Get someone to help if necessary.

CAUTION: Leaks due to insufficiently or differently tempered components! 
  • If cold or differently tempered components are sealed to each other by applying a sealant, adhesion problems or leaks can result because of condensed water forming or components becoming distorted. 

    → All components must be at least 17°C.

    → Components must not be too hot (distortion).

    → Spare parts stored in cold or heat (strong exposure to sunlight) must be at room temperature, or must have the same temperature as other components, before installation.

CAUTION: Emerging residual fluid can soil the engine! 
  • Residual fluid (fuel, oil, Pentosin, coolant, etc.) will emerge even after a long time when disassembling and assembling the engine. 

    → Place a drip tray under the engine at the assembly support.

    → Have a sufficient number of cleaning cloths ready.

    → Close off engine openings using stoppers.

Information 

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For tightening torques, tightening sequence and assembly overviews for the engine and transmission:

  1. Remove the engine.

    > 100119 REMOVING AND INSTALLING ENGINE 

  2. Remove engine.

    > 100127 REMOVING AND MOUNTING ENGINE 

  3. Secure engine to assembly support.

    > WM, 100113 SECURING ENGINE ON ASSEMBLY SUPPORT (V8 BITURBO) 

  4. Drain engine oil.

    > 170117 DRAINING AND FILLING IN ENGINE OIL

  5. Remove turbocharger.

    > 213019 REMOVING AND INSTALLING TURBOCHARGER (V8 BITURBO)

  6. Remove oil filter housing.

    > 172919 REMOVING AND INSTALLING OIL FILTER HOUSING (V8 BITURBO)

  7. Remove exhaust manifold at the left and right.

    > 261019 REMOVING AND INSTALLING EXHAUST MANIFOLD (V8 TURBO)

    1. 7.1 Unscrew nuts -8 to 1-  and remove exhaust manifold with seal.
    Fig 1: Exhaust Manifold Nuts Loosening Sequence
    G15824322Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Exhaust manifold

  8. Remove heat shields -1-  and heat protection -2-  .
    1. 8.1 Remove heat shields -1-  .
      1. 8.1.1 Unscrew screws -3-  .
      2. 8.1.2 Release and disconnect electric plug connection -4-  .
    2. 8.2 Remove heat protection -2-  .
      1. 8.2.1 Unscrew screw -5-  .
    G15824323Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Heat protection in inner V

  9. Remove piston spray nozzle control valve -1-  .

    > 172519 REMOVING AND INSTALLING PISTON SPRAY NOZZLE CONTROL VALVE (V8 BITURBO)

    G15824324Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Piston spray nozzle control valve

  10. Remove oil pressure switch -4-  .

    > 170519 REMOVING AND INSTALLING OIL PRESSURE SWITCH (V8 BITURBO)

    G15824325Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Oil pressure switch

  11. Remove oil temperature sensor -1-  .

    > WM, 170719 REMOVING AND INSTALLING OIL TEMPERATURE SENSOR

    G15824326Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Oil temperature sensor

  12. Remove oil/water heat exchanger -1-  .

    > 174019 REMOVING AND INSTALLING OIL/WATER HEAT EXCHANGER (V8 BITURBO)

    1. 12.1 Unscrew screws -2-  and remove oil/water heat exchanger -1-  with seal.
    G15824327Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Oil/water heat exchanger

  13. Remove drive belt -1 and 2-  .

    > 137819 REMOVING AND INSTALLING DRIVE BELT (V8 BITURBO)

    G15824328Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Overview of belt drive

    1  Belt for generator
    2  Belt for air-conditioning compressor
    3  Air-conditioning compressor
    4  Belt tensioner (air-conditioning compressor)
    5  Vibration damper
    6  Belt tensioner (generator)
    7  Generator
  14. Remove belt tensioner (generator) -1-  .

    > 137319 REMOVING AND INSTALLING BELT TENSIONER (GENERATOR)

    1. 14.1 Unscrew screws -2-  and remove belt tensioner.
    G15824329Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Belt tensioner (generator)

  15. Remove belt tensioner (air-conditioning compressor) -1-  .

    > WM, 137319 REMOVING AND INSTALLING BELT TENSIONER (AIR-CONDITIONING COMPRESSOR) (V8 BITURBO)

    1. 15.1 Unscrew screws -2-  and remove belt tensioner.
    G15824330Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Belt tensioner (air-conditioning compressor)

  16. Remove crankshaft vibration damper -2-  .

    > 137519 REMOVING AND INSTALLING CRANKSHAFT VIBRATION DAMPER (V8 BITURBO)

    1. 16.1 > T40330 - Counter-hold tool-1-  must be fitted. Then loosen and unscrew screw -5-  . Remove crankshaft vibration damper -2-  .
    G15824331Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Counterhold tool on crankshaft vibration damper

  17. Remove generator with bracket.

    > 272219 REMOVING AND INSTALLING GENERATOR (V8 BITURBO)

  18. Remove air-conditioning compressor with bracket.

    > WM, 873419 REMOVING AND INSTALLING AIR CONDITIONING COMPRESSOR - Coupe or WM, 873419 REMOVING AND INSTALLING ELECTRIC AIR-CONDITIONING COMPRESSOR - Wagon

  19. Remove coolant regulator housing -1-  .

    > 195519 REMOVING AND INSTALLING COOLANT REGULATOR HOUSING (V8 BITURBO)

    1. 19.1 Unscrew screws -2-  and remove housing with coolant regulator -1-  .
    G15824332Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Coolant regulator housing

  20. Remove coolant pump.

    > 195019 REMOVING AND INSTALLING COOLANT PUMP (V8 BITURBO)

    1. 20.1 Unscrew screws -7 to 1-  and remove coolant pump.
    Fig 2: Coolant Pump Screws Tightening Sequence
    G15824333Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Tightening sequence for coolant pump

  21. Remove flywheel.

    > 136019 REMOVING AND INSTALLING FLYWHEEL

    1. 21.1 > 10-201 - Counter-hold tool-1-  with two washers -2-  must be fitted on the flywheel. Then unscrew screws on the flywheel. Remove flywheel.
    G15824334Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Countering at the flywheel

  22. Remove coolant lines -2 and 5-  .
    1. 22.1 Unscrew screws -1, 3 and 4-  and remove coolant lines.
    G15824335Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Coolant lines

  23. Remove oil mist separator at the left and right with vent lines.

    > 105519 REMOVING AND INSTALLING (RIGHT) OIL MIST SEPARATOR (V8 BITURBO) 

    G15824336Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Oil mist separator

  24. Remove engine wire harness.

    > WM, 975219 REMOVING AND INSTALLING ENGINE WIRE HARNESS

    > WM, 975219 REMOVING AND INSTALLING ENGINE WIRE HARNESS

    1. 24.1 Release and disconnect the relevant cable plugs.
    2. 24.2 Unclip and remove wire harness for engine.
  25. Remove tank vent valves with vent lines.

    > WM, 202319 REMOVING AND INSTALLING TANK VENT VALVE (V8 BITURBO)

  26. Unclip and remove vacuum line assembly.
    G15824337Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Vacuum system

    1  Brake booster vacuum pump
    2  Vacuum line
    3  Electric change-over valve for water pump
    4  Control valve for boost pressure control, cylinders 1 to 4
    5  Control valve for boost pressure control, cylinders 5 to 8
    6  Brake booster connection
    7  Vacuum unit connection
  27. Remove intake-air distributor.

    > 244619 REMOVING AND INSTALLING INTAKE-AIR DISTRIBUTOR (V8 BITURBO)

  28. Remove PCV line -1-  .
    1. 28.1 Unscrew screws -2-  and remove PCV line -1-  .
    G15824338Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    PCV line

  29. Remove knock sensors.

    > 287219 REMOVING AND INSTALLING KNOCK SENSOR

  30. Remove ignition coils.

    > 282020 REMOVING AND INSTALLING IGNITION COILS (V8 BITURBO)

  31. Remove spark plugs.

    > 287020 REMOVING AND INSTALLING SPARK PLUGS

  32. Remove upper heat insulation -1-  .
    G15824339Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Heat insulation

  33. Remove fuel lines (high-pressure pump to rail).

    > 249019 REMOVING AND INSTALLING FUEL LINE (LEFT HIGH-PRESSURE PUMP TO RAIL) (V8 BITURBO)

    > 249019 REMOVING AND INSTALLING FUEL LINE (RIGHT HIGH-PRESSURE PUMP TO RAIL) (V8 BITURBO)

  34. Remove high-pressure pumps and remove tappets -1-  using a magnet.

    > 246319 REMOVING AND INSTALLING HIGH-PRESSURE PUMP (V8 BITURBO)

    G15824340Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Tappets for high-pressure pump (similar to illustration)

  35. Remove fuel injectors -1-  .
    1. 35.1 Use > T10133C - Tool set  if necessary.

      > 244019 REMOVING AND INSTALLING FUEL INJECTOR

      G15824341Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Injection valve

  36. Remove solenoid hydraulic valves for valve lift adjustment -2-  .

    > WM, 155519 REMOVING AND INSTALLING SOLENOID HYDRAULIC VALVE FOR VALVE LIFT ADJUSTMENT (V8 BITURBO)

    G15824342Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Solenoid hydraulic valve for valve lift adjustment

  37. Remove oil pan.
    1. 37.1 Unscrew screws -18 to 1-  .

      > 175019 REMOVING AND INSTALLING OIL PAN (V8 BITURBO)

      G15824343Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Oil pan

  38. Remove oil guide housing.
    1. 38.1 Unscrew screws -21 to 1-  .

      > 174619 REMOVING AND INSTALLING OIL GUIDE HOUSING (V8 BITURBO)

      Fig 3: Oil Guide Housing Screws Loosening Sequence
      G15824344Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Oil guide housing

  39. Remove oil pump -1-  .
    1. 39.1 Unscrew screws -2-  .

      > WM, 172019 REMOVING AND INSTALLING OIL PUMP (V8 BITURBO)

      G15824345Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Oil pump

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