Installing Front Wheel Bearing Housing

Information 

• Protect electric line as required when installing the spring strut on vehicles with PASM  .
• Do not lift/transport the spring strut/vibration damper at the electric lines  .
• A second mechanic is needed in order to install the spring strut/wheel bearing housing  .
• Make sure that the retaining pins do not damage the paint surface when fitting the spring strut mount. (Seal damaged areas with suitable preservative)  .
• Use correct tightening torques and torque angle.  → 4X00IN TIGHTENING TORQUES FOR FRONT AXLE .
• Always replace lock nuts  .

1. Tighten clamped connection between spring strut and wheel bearing housing.
   Fig 1: Tightening Clamped Connection Between Spring Strut And Wheel Bearing Housing

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   1. 1.1. Tighten fastening screw -3-  . Tightening torque 23 Nm (17 ftlb.) 
2. Guide spring strut/wheel bearing housing into the wheel housing and fit it on the body (observe markings). Get another person to help you with this.
   Fig 2: Identifying Spring-Strut Mount Collar Nut

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   1. 2.1. Tighten fastening nuts -1 to 3-  . Tightening torque 33 Nm (24 ftlb.) 
3. Fit lower trailing arm -5-  at the wheel carrier.
   Fig 3: Identifying Lower Trailing Arm Mounting

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   1. 3.1. Tighten fastening screw -2-  . Tightening torque 120 Nm (89 ftlb.) 
   2. 3.2. Fit level sensor linkage at the holder -1-  .
      1. 3.2.1. Tighten fastening nut and counter at the square part of the ball joint while doing this. Tightening torque 10 Nm (7.5 ftlb.) 

         Information 

         Following installation, seal the threaded joint securing tie rod to wheel bearing housing with wax as shown in -Illustration-  . Use Pfinder AP14/4 for this .

         Fig 4: Identifying Wax Applying Area

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4. Tighten fastening nut -1-  securing tie-rod ball to wheel bearing housing. Tightening torque 85 Nm (63 ftlb.) 

   When tightening the lock nuts, counter at the ball-joint pins using special tool screwdriver 9546  (Torx screwdriver).

   Fig 5: Identifying Tie-Rod Ball Nut

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   Information 

   Only for GT4 vehicles: 

   Fit connecting links (suspension/stabilizer) in the central position on the anti-roll bar

   Fig 6: Locating Suspension/Stabilizer On Anti-Roll Bar

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5. Fit connecting link -1-  on the wheel bearing housing.
   Fig 7: Fitting Connecting Link On Wheel Bearing Housing

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   1. 5.1. Insert connecting link -1-  and tighten fastening nut -2-  . Tightening torque 85 Nm 

      Counter the hexagon wrench face of the connecting link -arrow-  when tightening the fastening nut.

6. Unscrew fastening screws -arrows-  and remove brake disc. Tightening torque 10 Nm (7.5 ftlb.) 
   Fig 8: Locating Brake Disc Fastening Screws

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7. Install rear brake calliper with line bracket.

   Information 

   • Replace brake calliper fastening screws each time they are removed  .
   1. 7.1. Fit brake calliper together with the holder and screw in and tighten new brake calliper fastening screws -arrows-  . Tightening torque 85 Nm (63 ftlb.) 
      Fig 9: Locating Brake Calliper Fastening Screws

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   2. 7.2. Screw in and tighten fastening screws -3-  securing holder to wheel carrier. Tightening torque 10 Nm (7.5 ftlb.) 
      Fig 10: Identifying Wheel Carrier Holder Screws

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   3. 7.3. Plug in and lock electric plug connection on the rpm sensor -1-  .
   4. 7.4. Plug in and lock electric plug connection for PASM -2-  .