Installing Front Wheel Bearing

Information 

• The wheel bearing must not come into contact with magnetic objects (e.g., magnetic screwdriver, magnet)  .
• Screws and nuts are coated and must not be greased  .
• Grease the toothing of the drive shaft slightly with aluminum paste Optimoly TA  .
• Drive shafts must not be left hanging from the joint stop! Tie up  .
• Use new screws and fastening nuts  .
• Observe correct tightening torques  . → 4X00IN TIGHTENING TORQUES FOR REAR AXLE

1. Place the wheel bearing -1-  at a centered position under the workshop press ram.
2. Fit the wheel hub -2-  in the wheel bearing.

   When doing so, make sure that the wheel hub is installed at the correct position in the wheel bearing → Pressing in wheel hub  .

   Fig 1: Pressing In Wheel Hub

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Position a suitable pressure piece -3-  flat on the wheel hub.
4. Carefully press in the wheel hub until the pressure increases -A-  (check the pressure gauge!).
5. Fit the wheel bearing/wheel hub assembly in the wheel bearing housing and tighten the fastening screws to the prescribed tightening torque. → 4X00IN TIGHTENING TORQUES FOR FRONT AXLE

   The fastening screws are tightened to the specified torque angle in Step  8.

6. Grease the toothing with a little Optimoly TA aluminum paste and fit the drive shaft into the wheel bearing housing.
   • The drive shaft must be pulled in as far as it will go using the fitting tool T10206  .
     Fig 2: Identifying Fitting Tool T10206

     Courtesy of PORSCHE CARS NORTH AMERICA, INC.

     Pull the drive shaft into the wheel bearing housing.

7. Grease the mounting-face ring of the axle nut with a little Optimoly TA aluminum paste. Screw on the axle nut.
8. Following installation, the fastening screws still have to be tightened to the specified tightening torque  .

   Proceed as follows:

   1. 8.1. Mark one tooth of the fastening screw and the wheel bearing housing -A-  .
      Fig 3: Identifying Marking Fastening Screw

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   2. 8.2. Starting from the marked tooth, count off four teeth anti-clockwise and also mark this tooth -B-  .
   3. 8.3. Tighten the fastening screw -A-  until the second marking -1-  is aligned with the marking -2-  on the wheel bearing housing.

      This corresponds to → Final tightening: 120° 

      Fig 4: Tightening Fastening Screw On Wheel Bearing

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.