Overhaul

Disassembling And Assembling Pump Unit









Removing hydraulic cylinder









Filling the hydraulic cylinder

1. Filling the hydraulic cylinder






1.1. The hydraulic cylinder can only be filled in a retracted position.
1.2. Assemble hydraulic cylinder -2- vertically and fill with 5 ml Pentosin perhydraulic cylinder using a syringe. -> Tools and materials
1.3. Only Pentosin CHF 11 S may be filled into the hydraulic cylinder. Quantity supplied 1 litre container -> Tools and materials

Installing hydraulic cylinder









Removing pump









Filling the pump unit

1. Filling the pump unit






1.1. Fill the pump vertically using a syringe with 20 ml Pentosin per pump chamber. -> Tools and materials
1.2. Only Pentosin CHF 11 S may be filled into the pump unit. Quantity supplied 1 litre container -> Tools and materials

Installing pump









Bleeding the pump unit









Removing and installing wiring harness

Removing wiring harness









Installing wiring harness









Removing and installing micro switches for rear spoiler

NOTE:
- The rear spoiler is controlled via the instrument cluster.
- The micro switches can be checked with the Porsche System Tester.
- The micro switches are located on the right hydraulic cylinder.
- The operating principle of the micro switches differs (NO or NC contacts)

Removing micro switches

1. Unscrew fastening screws -2- for holder, micro switch -1- on the right hydraulic cylinder (4 screws) and remove holder.






2. Press the micro switch carefully out of the bracket using a screwdriver.
3. Open the protective sleeve of the wiring harness by a few centimeters and cut wiring of micro switch using a pair of side cutters.






Installing micro switches

1. Carefully push the new micro switch into the holder -1-. The micro switch with the blue lead at the bottom and the micro switch with the grey lead at the top.
2. The operating principle of the micro switches differs (NO or NC contacts)
3. Join wires using crimp connector and crimping tool. -> Tools and materials
- Cut off lines to different lengths (due to the shrink connection).
- Slide shrink-fit hose over the leads.
- Strip 10 mm of insulation off the wires.
- Connect wires with crimp connectors (do not confuse colours of the individual wires).
- Shrink shrink-fit hoses with a hot-air gun. It is essential that all wires are watertight.
- Wrap commercially available PVC tape all around the area of the connection points.

4. Position holder with micro switch -1- on the hydraulic cylinder. Fastening screws -2- Tightening torque: 0.5 Nm.(0.5 ftlb.)






Troubleshooting






Tools and materials