Replacing Hydraulic Pump For Steering

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.

Remove the pressure line at the hydraulic pump.
NOTE:
Dirt in the hydraulic system can damage the system.
- Ensure absolute cleanliness at all times!
- Close off the openings of hoses, lines and units using suitable stoppers.
- Replace visibly swollen coolant hoses!
- The reservoir must always be replaced if individual or multiple components are replaced.
- Only use Pentosin 202 to fill the hydraulic system.
1. 1.1. Unscrew the M8 fastening screw -5- used to secure the pressure line to the hydraulic pump and pull off the pressure line -1- .
  
  Fig 1: Removing Pressure Line From Hydraulic Pump
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
When pulling the pressure line -1- off the hydraulic pump, always replace the O-ring -X- .

Fig 2: Identifying O-Ring On Pressure Line
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Fit the pressure line -1- to the hydraulic pump and secure with the M8 fastening screw -5- .

Fig 3: Securing Pressure Line To Hydraulic Pump
Courtesy of PORSCHE CARS NORTH AMERICA, INC.