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Home >> Porsche >> 2023 >> Cayenne Base, 4D Utility Coupe >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 27 (15 Engine - Cylinder Head, Valve Drive 2.9L -- 9YA - Cayenne (9YA)) >> WM, 150506 Checking And Setting Camshaft Timing (V6 Turbo) >> Setting Camshaft Timing >> Checking Timing Of Camshafts

Checking Timing Of Camshafts

WARNING: This page is about a different variant/trim than selected.
  1. Turn the crankshaft clockwise until the marking on the vibration damper -1-  is positioned at TDC -2-  .
    G15210712Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    TDC marking on vibration dan per

  2. The markings on the camshaft actuators (cylinder bank 1) -1 and 2-  must be aligned with the reference points on the camshaft housing -Arrows-  . Turn the crankshaft one further turn clockwise if necessary.
    G15210713Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Markings on camshaft actuator (cylinder bank 1)

  3. The markings on the camshaft actuators (cylinder bank 2) -1 and 2-  must be aligned with the reference points -Lines-  on the camshaft housing.
    G15210714Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Markings on camshaft actuator (cylinder bank 2)

  4. Remove stoppers on camshafts -1-  .
    G15210715Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Stoppers on camshafts

    1. 4.1  Release and disconnect quick connector -3-  .
    2. 4.2  Move vacuum hoses -4-  aside so that the stoppers on the camshafts -1-  are accessible.
    3. 4.3  Unscrew screws -2-  .
    4. 4.4  Remove stoppers on camshafts -1-  .
  5. Screw adapter T40331/2 -1-  from > T40331 - camshaft clamp  tool kit into the camshaft housing on cylinder bank 1 and tighten to 9 Nm (6.5 ftlb.)  .
    G15210716Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Adapter on camshaft housing, cylinder bank 1

  6. Screw adapter T40331/3 -1-  from > T40331 - camshaft clamp  tool kit into the camshaft housing on cylinder bank 2 and tighten to 9 Nm (6.5 ftlb.)  .
    G15210717Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Adapter on camshaft housing, cylinder bank 2

    Information 

    The camshaft clamp must be easy to insert and must not be fitted using a striking tool. 

    Information 

    It may be necessary for another person to carefully position the camshafts at the actuators using > T90001 - counterhold tool  and > VAS 261 001 - Ring wrench insert, a/f 41  .

  7. Fit > T40331 - camshaft clamp  .
    1. 7.1  Insert > T40331 - camshaft clamp  .

      Cylinder bank 1

      G15210718Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Camshaft clamps on cylinder bank 1

      1  T40331/1 - The letter "A" must be facing you 
      2  T40331/9 
      3  T40331/2 
      4  T40331/5 - Exhaust camshaft 
      5  T40331/4 - Intake camshaft 
      1. 7.1.1 T40331/9 -2-  must be screwed in by hand. Tighten screws on the camshaft clamp -Arrows-  to 9 Nm (6.5 ftlb.)  .
    2. 7.2  Cylinder bank 2
      G15210719Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Camshaft clamps on cylinder bank 2

      1  T40331/1 - The letter "B" must be facing you 
      2  T40331/9 
      3  T40331/3 
      4  T40331/5 - Exhaust camshaft 
      5  T40331/6 - Intake camshaft 
      1. 7.2.1 T40331/9 -2-  must be screwed in by hand. Tighten screws on the camshaft clamp -Arrows-  to 9 Nm (6.5 ftlb.)  .
  8. Secure the crankshaft.
    G15210720Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Screw plug for crankshaft

    1. 8.1  Unscrew screw plug -1-  from the bore -2-  and remove vacuum reservoir holder -3-  .
    2. 8.2  Screw > T40069 - locking pin  into the bore -2-  by hand.

      Turn the crankshaft back and forth slightly to do this, if necessary.

    3. 8.3  Tighten > T40069 - locking pin  to 20 Nm (15 ftlb.)  .

    NOTIFICATION 

    Timing not set correctly 

    • Risk of engine damage 
    • Rough running engine 
    • Loss of engine power 
      • Do not use force when fitting the staking tool.
      • Make sure that the gap is equal on both sides.
      • When inserting the staking tools, do not use force to turn the camshafts against any resistance.
      • The engine must be exactly at top dead center.
      • The opposite cylinder must be at ignition TDC.
  9. If the staking tools can be inserted as described, the timing is OK.

    If the staking tools cannot  be inserted as described, the timing must be set.

    Information 

    The pictures shown in this document may differ from the original.

If the locking tools cannot be inserted as described: 

  1. Remove all tools.
  2. Fit > VAS 261 001 - ring spanner insert, a/f 41  with > T90001 - counter-hold tool  on the camshaft actuator.

    The > T90001 - counterhold tool  can only be inserted at one position. To do this, the markings on the camshaft actuator -1-  and chain housing -2-  must be aligned.

    G15210721Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Special tool T90001 on camshaft actuator

    Information 

    Never use the camshaft clamps -T40331- as a counterhold tool for loosening the camshaft controllers.

  3. Release camshaft actuator -1-  .
    G15210722Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Camshaft actuator

    1. 3.1  Hold camshaft actuator -1-  with > VAS 261 001 - ring insertion tool SW41-2-  and > T90001 - counterholder-3-  and loosen half a turn with > T90000 - socket wrench E24  .
  4. Screw adapter T40331/2 -1-  from > T40331 - camshaft clamp  tool kit into the camshaft housing on cylinder bank 1 and tighten to 9 Nm (6.5 ftlb.)  .
    G15210723Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Adapter on camshaft housing, cylinder bank 1

  5. Screw adapter T40331/3 -1-  from camshaft clamp tool kit into the > T40331 - camshaft housing  on cylinder bank 2 and tighten to 9 Nm (6.5 ftlb.)  .
    G15210724Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Adapter on camshaft housing, cylinder bank 2

    Information 

    The camshaft clamp must be easy to insert and must not be fitted using a striking tool. 

  6. Fit > T40331 - camshaft clamp  .

    Information 

    It may be necessary for another person to carefully position the camshafts at the actuators using > T90001 - counterhold  tool and > VAS 261 001 - Ring wrench insert, a/f 41  .

    1. 6.1  Insert > T40331 - camshaft clamp  .

      Cylinder bank 1

      G15210725Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Camshaft clamps on cylinder bank 1

      1  T40331/1 - The letter "A" must be facing you. 
      2  T40331/9 
      3  T40331/2 
      4  T40331/5 - Exhaust camshaft 
      5  T40331/4 - Intake camshaft 
      1. 6.1.1 T40331/9 -2-  must be screwed in by hand. Tighten screws on the camshaft clamps -Arrows-  to 9 Nm (6.5 ftlb.)  .
    2. 6.2  Cylinder bank 2
      G15210726Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Camshaft clamps on cylinder bank 2

      1  T40331/1 - The letter "B" must be facing you. 
      2  T40331/9 
      3  T40331/3 
      4  T40331/5 - Exhaust camshaft 
      5  T40331/6 - Intake camshaft 
      1. 6.2.1 T40331/9 -2-  must be screwed in by hand. Tighten screws on the camshaft clamps -Arrows-  to 9 Nm (6.5 ftlb.)  .
  7. Secure the crankshaft.
    G15210727Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Screw plug for crankshaft

    1. 7.1  Unscrew screw plug -1-  .
    2. 7.2  Remove holder for vacuum reservoir -3-  .
    3. 7.3  Screw > T40069 - locking pin  into the bore -2-  by hand.

      Turn the crankshaft back and forth slightly to do this, if necessary.

    4. 7.4  Tighten > T40069 - locking pin  to 20 Nm (15 ftlb.)  .

    Information 

    The markings on the camshaft actuators must be aligned with the reference points on the camshaft housing.

    Information 

    Camshaft actuator must not be disassembled! 

    G15210728Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Friction plate in camshaft actuator

    • The camshaft actuator must never be disassembled. 
    • To replace the friction plate -1- , lever it out carefully using a small slotted screwdriver -2-  .
  8. The markings on the camshaft actuator (cylinder bank 1) -1 and 2-  must be aligned with the corresponding markings on the camshaft housing -Arrows-  .

    If the markings on the camshaft actuator -1 and 2-  are not aligned with the corresponding markings on the camshaft housing -Arrows-  the camshaft actuators must be removed and positioned correctly.

    G15210729Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Markings on camshaft actuator (cylinder bank 1)

    Information 

    The markings on the camshaft actuators must be aligned with the reference points on the camshaft housing.

    Information 

    Camshaft actuator must not be disassembled! 

    G15210730Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Friction plate in camshaft actuator

    • The camshaft actuator must never be disassembled. 
    • To replace the friction plate -1- , lever it out carefully using a small slotted screwdriver -2-  .
  9. The markings on the camshaft actuator (cylinder bank 2) -1 and 2-  must be aligned with the corresponding markings on the camshaft housing -Lines-  .

    If the markings on the camshaft actuator -1 and 2-  are not aligned with the corresponding markings on the camshaft housing -Lines-  the camshaft actuators must be removed and positioned correctly.

    G15210731Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Markings on camshaft actuator (cylinder bank 2)

    Information 

    You will need a second mechanic to help you with this step.

  10. Tighten camshaft actuator -1 and 2-  .
    G15210732Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Tightening of camshaft actuator

    1. 10.1  A second mechanic must use > V.A.G 1331A - torque wrench 6-50 Nm (4.5-37 ftlb.)-5-  with > VAS 261 001 -ring spanner insert, a/f 41-4-  and > T90001 - counter-hold tool-3-  to pre-tension the camshaft actuators to 30 Nm  by turning them anti-clockwise and holding them securely.
    2. 10.2  Tighten camshaft actuators -1 and 2-  in the following sequence. (Camshaft actuator is still pre-tensioned) 
      1. 10.2.1  Tighten intake camshaft actuator -2-  .

        > Initial tightening 30 Nm (22 ftlb.) 

      2. 10.2.2  Tighten exhaust camshaft actuator -1-  .

        > Initial tightening 30 Nm (22 ftlb.) 

      NOTIFICATION 

      Timing not set correctly 

      • Risk of engine damage 
      • Rough running engine 
      • Loss of engine power 
        • Do not use force when fitting the staking tool.
        • Make sure that the gap is equal on both sides.
        • When inserting the staking tools, do not use force to turn the camshafts against any resistance.
        • The engine must be exactly at top dead center.
        • The opposite cylinder must be at ignition TDC.
  11. Remove staking tools, perform two revolutions of the engine and check the timing again.
    1. 11.1  Secure the crankshaft using locking pin.
    2. 11.2  A second mechanic must use > V.A.G 1331A - torque wrench 6-50 Nm (4.5-37 ftlb.)  with > VAS 261 001 - ring spanner insert, a/f 41  and > T90001 - counter-hold tool  to pre-tension the camshaft actuators to 30 Nm (22 ftlb.)  by turning them anti-clockwise and holding them securely.
    3. 11.3  The camshaft fixing pin mutt insert easily. Do not insert the camshaft fixing pin using a hammer.
    4. 11.4  If the camshaft fixing pin cannot be inserted.
      1. 11.4.1  Remove camshaft fixing pin and locking pin on the crankshaft.
      2. 11.4.2  Plug the camshaft fixing pin as far into the camshafts as it will go. Turn the crankshaft slightly if necessary.
      3. 11.4.3  Loosen actuators by half a turn using the special tools.
      4. 11.4.4  Fix crankshaft in place with the locking pin and repeat the settings.
  12. Tighten camshaft actuator -1 and 2-  .
    G15210733Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Final tightening of camshaft actuator

    1. 12.1  Fit > T90001 - counter-hold tool-3-  and > T90002 - counter-hold tool-4-  on the exhaust camshaft actuator -1-  .
    2. 12.2  Support > T90002 - counter-hold tool-4-  on the intake camshaft actuator -2-  .

      Turn the crankshaft slightly to do this if necessary. (Only in direction of rotation of engine) 

    3. 12.3  Tighten exhaust camshaft actuator -1-  .

      > Final tightening + 35° 

    4. 12.4  Fit > T90001 - counter-hold tool-3-  and > T90002 - counter-hold tool-4-  on the intake camshaft actuator -2-  .
    5. 12.5  Support > T90002 - counter-hold tool-4-  on the exhaust camshaft actuator -1-  .

      Turn the crankshaft slightly to do this if necessary. (only turn clockwise) 

    6. 12.6  Tighten intake camshaft actuator -1-  .

      > Final tightening + 35° 

    7. 12.7  Remove > T90001 - counter-hold tool-3-  and > T90002 - counter-hold tool-4-  .
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