Installing Electrohydraulic Control Unit

Information 

• Before installation, check the sealing faces on the electrohydraulic control unit and on the transmission for damage and soiling. 
• Damaged or soiled parts must not be used. Ensure absolute cleanliness during installation. 

Information 

• If a new hydraulic control unit is installed, the transmission must be calibrated using PIWIS Tester II 9818. 
  Fig 1: Hydraulic Control Unit Tightening Sequence

  Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Install electrohydraulic control unit.
   1. Position gear support approx. 10 cm under the transmission and then place the electrohydraulic control unit on the transmission jack.
   2. Fit the temperature sensor at the electrohydraulic control unit.

      Fit the temperature sensor -3-  and check that it is installed at the correct position above the oil bore. Screw in and tighten screw -2-  on the electrohydraulic control unit -1-  .

      → Tightening torque: 6 Nm (4.5 ftlb.) 

      Fig 2: Identifying Temperature Sensor Switch Unit

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   3. Fix the electrohydraulic control unit in place under the transmission using two screws (M6 x 95 mm), → Part No. 900.385.126.01. To do this, fit the two screws through the screw holes for screws 16 and 18 on the electrohydraulic control unit and screw in by approx. 10 mm.
   4. Connect cable plugs at the solenoid valves.

      Connect cable plugs -arrows-  to the solenoid valves -1, 2-  and check that the cable plugs -arrows-  are engaged correctly.

      Fig 3: Disconnecting/Connecting Solenoid Valves

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   5. Secure electrohydraulic control unit to the transmission.

      Information 

      The wire harness for the solenoid valves -3-  and the cable for the temperature sensor -4-  must be routed in the recess between the transmission housing -2-  and electrohydraulic control unit -1-  because otherwise the cables can become squashed, resulting in damage and malfunctions.

      Fig 4: Identifying Transmission Wire Harness

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
      • Check that the wire harness is positioned correctly after installing the electrohydraulic control unit.
      • Make sure that the electrohydraulic control unit is flat on the Porsche Doppelkupplung housing.
      • The electrohydraulic control unit must be positioned exactly with respect to the port plate.
      • Fit and tighten screws -1 to 15-  in the specified sequence.
      • Unscrew the long screws.
      • Fit and tighten screws -16 to 20-  in the specified sequence.
      • Check the position of the electrohydraulic control unit again.
      • Tighten screws -1 to 20-  .

        Step: 1

        → Tightening torque: 1.5 Nm (1 ftlb.) + 1.5 Nm (+1 ftlb.) 

        Step: 2

        → Tightening torque: 8 Nm (6 ftlb.)