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Home >> Porsche >> 2017 >> Cayenne Turbo >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (15 - Engine - Cylinder Head, Valve Drive (4.8L Non Turbo) -- 92A - Cayenne (92A)) >> WM, 153319 Removing And Installing Chain Housing Cover >> Removing Chain Housing Cover

Removing Chain Housing Cover

WARNING: This page is about a different car, the 2014 Porsche Cayenne, 2013 Porsche Cayenne, 2012 Porsche Cayenne, and 2011 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: NOTIFICATION 
Chain housing cover removed incorrectly 
  • Risk of damage to seal between oil pan and crankcase 
  • Risk of engine leaks 

    → Always reseal the oil pan when removing the chain housing cover.

  1. On turbo engines, remove positive crankcase ventilation completely in front of the chain housing cover > One-way couplings for ventilation on turbo engines  . Be careful with connections that cannot be loosened.
    Fig 1: One-Way Couplings For Ventilation Components Location - Turbo Engines
    G16308496Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    One-way couplings for ventilation on turbo engines

    1  Turbocharger
    2  Check valve for vent line to oil-mist separator and intake-air distributor.
    3  Full-throttle ventilation one-way coupling => Cannot be refitted. Make sure the markings are positioned correctly with respect to each other during initial fitting.
    4  Full-throttle ventilation one-way coupling to intake manifold => Cannot be refitted. Make sure the markings are positioned correctly with respect to each other during initial fitting.
  2. Remove belt tensioner and deflection rollers on the chain housing cover. To do this, lever off the cover and loosen the screws. > Belt drive 
    Fig 2: Belt Drive Components Location
    G16308497Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Belt drive

    1  Deflection roller
    2  Hydraulic belt tensioner; tensioner at the lever, tensioning roller at the tensioning lever
    3  M8 screw; complete lever on chain housing cover and cylinder head; belt tensioner and chain housing cover at the console
    4  Deflection roller
    5  Dual poly-V-belt
  3. Unclip vacuum lines from the cable duct if fitted -arrows-  .
    G16308498Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Unclipping vacuum lines at the cable duct

  4. Unscrew fastening screw -1-  at the cable duct -2-  .
    G16308499Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Releasing cable duct

  5. Remove chain tensioner.

    > 153619 REMOVING AND INSTALLING CHAIN TENSIONER 

  6. Remove chain housing cover. To do this, loosen all screws in reverse order. > Tightening sequence for chain housing cover 
    Fig 3: Chain Housing Cover Screws Tightening Sequence
    G16308500Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Tightening sequence for chain housing cover

    A  M6 screw
    B  M6 screw; inner chain housing cover to upper part of crankcase and cylinder head; chain housing cover to cylinder head
    C  M8 screw; chain housing cover (chain tensioner position) to upper part of crankcase and cylinder head
    D  The chain housing cover must be level with the lower part of the crankcase (use a steel rule or dial gauge)
  7. Carefully remove chain housing cover. Lever off gently if necessary (bonded with sealant).
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