Removing Front-Axle Valve Block

→ Avoid contact with caustic fluid.

→ Wear personal protective gear.

→ Ensure that there is good ventilation.

→ If you do come into contact, wash off immediately with plenty of warm water and contact a doctor if necessary.

→ Do not spill fluids.

→ In the event of contact, wash the component or surface with water.

→ Replace components that are already damaged.

Fig 1: Locating Front Axle Valve Block

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Remove transverse strut -1-  .
   1. 1.1. Unscrew and remove fastening screws -2-  .
   2. 1.2. Remove transverse strut -1-  .
      Fig 2: Removing Transverse Strut

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Disconnect connector -1-  for electric line.
   Fig 3: Identifying Connector

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Information 

   Before starting to work on the PDCC system, always clean the underbody or at least clean the system components you will be working on. Ensure absolute cleanliness at all times. In other words:

   • Clean the system components to be removed using a power washer, for example. Ensure that the high-pressure spray is at least 50 cm away from the component (risk of damage to electric lines, connectors and contacts). 
   • Before loosening the hydraulic connections, the areas around the connections must also be cleaned carefully (e.g. using a brush and/or a lint-free cloth). 
   • If you intend to use the component again, the openings must be closed off immediately using suitable stoppers. 
   • If you are using new components, the stoppers must only be removed immediately before fitting. 
3. Unscrew and remove fastening screws on valve block -3-  .
4. Get a second mechanic to hold the valve block -4-  .
   Fig 4: Identifying Valve Block Mounting Screws

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
5. Mark the installation position of the steel flexi-pipes -2-  on the steel flexi-pipes themselves and on the valve block using a suitable touch-up stick -3-  .
6. Unscrew and remove cap screws on steel flexi-pipes -1-  .
   Fig 5: Identifying Cap Screws And Steel Flexi-Pipes

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
7. Remove oil pressure lines -3-  on both sides of the valve block.
   1. 7.1. Unscrew and remove fastening screw -1-  .
   2. 7.2. Remove fastening clamp -2-  on steel pipes.
   3. 7.3. Pull oil pressure lines -3-  out of the valve block and unclip them.
      Fig 6: Identifying Fastening Clamp, Screws And Oil Pressure Line

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Information 

      • After removing the lines, they must be closed off immediately using a clean cap if you do not intend to install the new valve block straightaway. 
      • When doing this, make sure that no dirt gets into the system as this can result in system failure. 
8. Remove valve block.