Removing 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.

CAUTION:

Damage can result from Pentosin getting into the surrounding area (e.g. onto the coolant hoses) when the hydraulic hoses are loosened (opened).

→ Avoid all contact with Pentosin.

→ Collect emerging Pentosin in a suitable container.

→ Wear protective goggles when carrying out overhead work on lines with Pentosin!

→ Wear protective gloves!

→ If coolant hoses come into contact with Pentosin, clean them thoroughly with water IMMEDIATELY.

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.

Fig 1: Identifying Installation Position Of Hydraulic Pump

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Open the cap on the power-steering reservoir.
Release and unplug the two electric connectors on the hydraulic pump.

Fig 2: Removing Hydraulic Pump Connectors
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Place a suitable collecting pan underneath. Disconnect the pressure line -1- at the connection point and drain Pentosin.

Fig 3: Opening Pressure Line Connection Point
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Loosen two M6 fastening nuts -2- at the front and rear of the hydraulic pump. The nuts must not be unscrewed fully.

Fig 4: Loosening Fastening Nuts
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove the hydraulic pump.
1. 5.1. Carefully remove the hydraulic pump to the side by turning it and secure it so that it cannot fall down.
2. 5.2. Loosen the spring band clamp -3- using clamping pliers and pull the suction hose -4- off the connection at the hydraulic pump.
  
  Fig 5: Turning Hydraulic Pump
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  
  Fig 6: Pulling Off Suction Hose
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.