Removing Hydraulic Pump (Cayenne Turbo/Cayenne S)

Information 

• The engine does not need to be removed to remove and install the hydraulic pump. 
  Fig 1: Identifying Hydraulic Pump (Pulley Removed)

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1. Pull the cover of the throttle body up and off.
   Fig 2: Pulling Cover Of Throttle Body

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2. Remove air box for throttle housing (Y-pipe). → Removing air box for throttle housing (intake pipe upstream of throttle valve)

   Information 

   • Cayenne Turbo only: Before removing the cover of the air cleaner box, the intake manifold of the turbocharger must be disengaged from the air cleaner housing. 
   • Loosen the pulley of the hydraulic pump before removing the drive belt. 
3. Remove the left air cleaner housing Removing air cleaner housing . To do this, follow Steps 4 and  5-Air path on Cayenne Turbo (left side)-  . Steps  5 to  11 are not relevant for the Cayenne S.
   Fig 3: Identifying Air Cleaner Housing

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4. Disconnect intake manifold at the air cleaner cover. Remove the air cleaner cover on the Cayenne S.
   Fig 4: Locating Air Cleaner Cover

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5. To do this, turn the -pins 180°-  and pull them out. Then pull off the intake manifolds.
   Fig 5: Turning Intake Manifolds Pins 180

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6. Once the cover is removed, remove the intake manifold completely along with the clamp. To do so, disconnect the positive crankcase ventilation pipe at the pressure pipe and at the hydraulic pump (clamp locks).
   Fig 6: Locating Pressure Pipe And Hydraulic Pump

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7. Separate the pressure pipe at the turbocharger and at the charge air cooler from below (engine guard removed).
   Fig 7: Locating Pressure Pipe At Turbocharger

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8. Loosen pulley on hydraulic pump. Do so by slackening the drive belt Fig 8 and set it aside. → Checking drive belt
   Fig 8: Loosening Hydraulic Pump Pulley

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9. Remove pulley on hydraulic pump completely.
10. Clamp both lines to the hydraulic pump (intake pipe, pressure line) with a hose clamp 3094  as close as possible to the hydraulic pump as possible.
11. Remove both lines to the hydraulic pump (intake pipe, pressure pipe). Close the open connections with suitable plugs. Collect emerging hydraulic fluid in a suitable container.
12. Remove the hydraulic pump (3 x front Torx E12, 1 x rear Torx E12).
    Fig 9: Removing Hydraulic Pump

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