Removing Power-Steering Gear

Fig 1: Identifying Steering Gear Installation Position

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Information 

• Fix steering wheel with wheels in straight-ahead position (engage steering column lock or clamp steering wheel in center position with steering wheel holder). If this is not done, the airbag contact unit will have to be put in the center position after installation of the steering gear →  945019 REMOVING AND INSTALLING STEERING COLUMN SWITCH  . 
• Before the feed and return lines are loosened, place a suitable container underneath to collect steering fluid. 
• Wear protective goggles and gloves. 

1. Unscrew fastening nut -1-  from the ball pin for the tie-rod ball -2-  until it is flush with the thread of the ball pin.
   Fig 2: Identifying Tie-Rod Ball On Wheel Bearing Housing

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2. Press tie-rod ball off the wheel bearing housing. → Pressing off tie rod 

   When pressing it off, make sure not to damage the rpm sensor.

   Fig 3: Pressing Off Tie Rod

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   1. 2.1. Position ball joint puller T10187  under the ball pin and fit it on the fastening nut.
   2. 2.2. Press tie-rod ball out of the tapered end of the wheel carrier using ball joint puller T10187  .

      Screw in hexagon on the ball joint puller T10187  until the tie-rod ball comes out of the tapered end of the wheel carrier.

3. Remove fastening screws -arrows-  from the heat shield (steering gear/steering shaft). If the vehicle is a Cayenne with Servotronic, pull off the connector.
   Fig 4: Locating Heat Shield/Steering Attachment Screws

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4. Unscrew clamping screw -1-  on the steering column -2-  at the steering gear -3-  .

   Slide the steering column -2-  upwards and pull it down off the steering gear -3-  (-arrow A-  ).

   Fig 5: Loosening Steering Column At Steering Gear

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5. Remove fastening screws -arrows-  from heat shield for rear transmission mount.
   Fig 6: Locating Heat Shield Screws For Rear Transmission Mount

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6. Loosen rear mounting for front-axle final drive (right-hand side of vehicle). Lift front-axle final drive using a suitable jack → Lifting front-axle final drive  (use a wooden block or rubber base to prevent slipping). Remove fastening screw and lift front-axle final drive just enough to access the bearing eye above the bolting point of the front-axle carrier (do not press the cardan shaft into the stop).
   Fig 7: Lifting Front-Axle Final Drive

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7. Re-insert fastening screw -arrow-  (for better access). The drive remains at the raised position and the jack can be removed.
   Fig 8: Locating Fastening Screw

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8. Disconnect supply and return lines -arrows-  (collect steering fluid in a suitable container). Close off lines and open threaded bores using suitable stoppers.
   Fig 9: Locating Hydraulic Lines On Power-Steering Gear

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9. Remove fastening screws on the steering gear -arrows-  .
   Fig 10: Locating Power-Steering Gear Mounting Screws

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10. To make it easier to remove the steering gear, unclip the coolant hoses -arrows-  from the brackets and move them upwards.
    Fig 11: Identifying Coolant Hoses

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11. Remove fastening screws -1-  for the heat shield -2-  near the bellows -3-  for the right tie rod.
    Fig 12: Identifying Heat Shield Fastening Screws For Right Tie Rod

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12. Push the steering gear to the right, out of the chassis subframe mounting points, and turn it to the rear. → Guiding out power-steering gear 
    Fig 13: Guiding Out Power-Steering Gear

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13. Turn the steering gear approx. 90-100 degrees -arrow-  to the rear.
    Fig 14: Turning Steering Gear

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14. Unclip coolant hoses in the wheel housing from the retaining clip. Then, carefully push the steering gear to the right and remove it by pulling it down through the chassis subframe.