Installing Front Wheel Bearing

→ Read specific safety information for the press.

→ Check that the press is working perfectly before use, particularly the safety components.

Information 

Do not raise the wheel suspension higher than the normal vehicle position. When raising the suspension, use a suitable intermediate layer made of hard rubber. Do not move the vehicle if drive shafts have not been fitted and tightened.

Information 

• The wheel bearing must not come into contact with magnetic objects (e.g., magnetic screwdriver, magnet). 
• The entire threaded parts of the axle must be tightened in vehicle position. Vehicle position means: vehicle standing on the wheels, or the wheel suspension is being raised with a universal vehicle lift. -Dimension X- , from → Control value: 502 mm+/-10 mm corresponds to the vehicle position. 
  Fig 1: Identifying Universal Vehicle Lift Dimension

  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
• Visually inspect all parts. 
• Replace self-locking nuts. 
• Replace all expansion screws (screws which are fitted with torque angle tightening procedure). 
• Use correct tightening torques and torque angle. → Tightening torques for front axle 
• Screws are Dacromet-coated and must not be greased. 
• Make sure the bevel pinions from the ball joints are clean. Clean with a lint-free cloth as necessary. Do not use cleaning agent. 

1. Fit the wheel bearing (tools). → see Fig 2
   Fig 2: Identifying Wheel Bearing Tools

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Check that the bearing seat -arrow-  (in rear axle figure) is clean and the surface is in good order. There must not be scores, grooves or deformations.

   Fig 3: Locating Bearing Seat

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Insert the wheel bearing with the magnetic multiple-pole ring to the drive shaft. Check the magnetic side (e.g., with a paper clip). Do not use magnets or screw drivers to check!

2. Position the -Radlager im Radlagergehause-  in the correct position. Position the T10205/7 pressure piece (from attachments T10205  ) in the correct position on the wheel bearing. Insert the tubular piston cylinder vas 6178.  Position the T10205/9 pressure piece (from attachments T10205) and the 8-2 nut for threaded rod (from attachments T10205  ) in the correct position. Mount wheel bearing. Shortly before the stop, the applied force will be between 35 kN and 60 kN. Do not exceed the maximum assembling force at the stop. → assembling force: 90 KN 
   Fig 4: Mounting Wheel Bearing Using Tool

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Position the -Sicherungsring-  with the opening facing downward. When the Seger ring is fitted correctly, -Maβ X-  is at least 15 mm. → Minimum dimension: 15 mm  If this dimension is not reached, refit the Seeger circlip ring. If necessary, carefully press again on the wheel bearing.
   Fig 5: Removing Retaining Ring

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Fit wheel hub (tools) → see Fig 6.
   Fig 6: Identifying Wheel Hub Tools

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Carry out a close visual inspection of the seat of the wheel hub. There must not be scores, grooves or similar deformations on the hub.

5. Position the -Radnabe-  in the correct position. Position the T10205/10 pressure piece (from attachments T10205  ) in the correct position on the wheel hub. Insert the tubular piston cylinder vas 6178.  Position the T10205/6 pressure piece (from attachments T10205  ) and the 8-2 nut for threaded rod (from attachments T10205  ) in the correct position. Pull in the wheel hub. Shortly before the stop, the applied force will be between 9 kN and 35 kN. Do not exceed the maximum assembling force at the stop. → assembling force: 40 KN 
   Fig 7: Positioning T10205/10 Pressure Piece On Wheel Hub

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Fit the drive shaft. → Installing Front Drive Shaft 
7. Press out the wheel carrier on the top axle strut (top ball joint).
8. Fit brake disc. → Installing Front Brake Disc
9. Fit the wheel speed sensor. → Installing Speed Sensor
10. Fit the two holders (brake hose, combination wire) on wheel bearing housing.