Test Conditions

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Porsche Cayenne, 2017 Porsche Cayenne, 2016 Porsche Cayenne, 2015 Porsche Cayenne, and 2014 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

Engine must be at operating temperature.

The valve on the hydraulic tappet you are checking must be closed.

Use adapter T40058 and an angled ring wrench to turn the crankshaft in direction of rotation of the engine -arrow- until the valve on the hydraulic tappet you are checking is closed.

Fig 1: Rotating Crankshaft
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Measure the amount of play between the cams and rocker arm.
1. 2.1.
2. 2.2. Press the rocker arm down -arrow- .
  Information
  
  Defective or worn hydraulic tappets cannot be repaired, but must be replaced.
3. 2.3. If you can slide a feeler gauge 0.20 mm between the cams and rocker arm, replace the hydraulic tappet.
4. 2.4. Replace hydraulic tappet.
  
  Fig 2: Checking Hydraulic Tappets Play
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.