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Home >> Porsche >> 2014 >> Cayenne GTS >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 15 - Engine - Cylinder Head, Valve Drive (4.8L Non Turbo) -- 92A - Cayenne (92A) >> WM, 155519 Removing And Installing Solenoid/Hydraulic Valve For Valve Lift Switchover >> Preliminary Work >> Removing Hydraulic Valve For Valve Lift Switchover

Removing Hydraulic Valve For Valve Lift Switchover

  1. Pull off cable plug for hydraulic valve and remove both screws.
    Fig 1: Camshafts Components Location - Cylinder Bank 1 To 4
    G16308589Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Camshafts, cylinder bank 1 to 4

    1  Camshaft (outlet)
    2  Camshaft (intake)
    3  Hydraulic valve for variable valve lift control
    4  Screw, M5 x 12
    5  Switching tappet (oil with engine oil)
    6  Flat-base tappet (oil with engine oil)
    7  Stopper
    8  Mounting saddle 1 to 4
    9  Stopper
    10  Bearing locations (oil with engine oil)
    A  Direction of travel
    Fig 2: Camshafts Components Location - Cylinder 5 To 8
    G16308590Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Camshafts, cylinders 5 to 8

    1  Switching tappet (oil with engine oil)
    2  Flat-base tappet (oil with engine oil)
    3  Camshaft (intake)
    4  Hydraulic valve for variable valve lift control
    5  Screw, M5 x 12
    6  Camshaft (outlet)
    7  Stopper
    8  Mounting saddle, cylinders 5 to 8
    9  Stopper
    10  Bearing surfaces (oil with engine oil)
    A  Direction of travel
  2. Pull hydraulic valve out of cylinder head. Make sure that the sealing ring is also removed. If it is not, look for the sealing ring using a mirror and a torch.
  3. Clean front strainer of hydraulic valve with solvent naphtha. Replace the hydraulic valve if damaged or heavily soiled.
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