Bleeding The Pump Unit

Fig 1: Overview Of Spoiler Drive (Pump Unit)

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Move both hydraulic cylinders out.
1. 1.1. Move both hydraulic cylinders out by the -dimension X- . → Length: 15 mm+5 mm
  To do this, connect the -wide contact- to 8V (+) and the -narrow contact- to ground (--).
  
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  Trapped air will escape via the banjo bolt while the hydraulic cylinder moves downwards.
  
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  Wipe up emerging Pentosin with a cloth.
  
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  Counter at the hydraulic line with an open-ended wrench when tightening the banjo bolt.
Bleed the pump unit via the hydraulic lines on the two hydraulic cylinders.
1. 2.1. Slowly open the banjo bolt -2- on one hydraulic cylinder -1- until the hydraulic cylinder -1- moves slowly downwards. As soon as the hydraulic cylinder -1- reaches the lower mechanical stop, tighten the banjo bolt -2- . → Tightening torque: 15 Nm (11 ftlb.)
2. 2.2. Slowly open the banjo bolt -2- on the second hydraulic cylinder -1- until the hydraulic cylinder -1- moves slowly downwards. As soon as the hydraulic cylinder -1- reaches the lower mechanical stop, tighten the banjo bolt -2- . → Tightening torque: 15 Nm (11 ftlb.)
Press cap -2- onto the hydraulic cylinder -1- .

Fig 4: Fitting Cap On Hydraulic Cylinder
Courtesy of PORSCHE CARS NORTH AMERICA, INC.