Installing Lower Trailing Arm

Information 

Threaded joints must only be tightened in zero position to prevent warping in the bearings.

1. Installation is performed in reverse order. Pay particular attention to the following:
   1. 1.1 Replace and fit screws for lower trailing arm.
   2. 1.2 Replace and screw on nuts for lower trailing arm.
   3. 1.3 Replace and screw on nut securing lower trailing arm to lower trailing arm joint.
   4. 1.4 Replace and screw on nut securing tie-rod ball to wheel bearing housing.
   5. 1.5 Before tightening the lower trailing arm screws: Lift wheel suspension to zero position using > VAS 6931 - engine and gearbox jack  .

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Zero position (shown on rear axle as an example)

   6. 1.6 Tighten new  nut -2-  .

      > Tightening - torque 140 Nm (104 ftlb.) 

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Lower trailing arm on wheel bearing housing

   7. 1.7 Tighten new  nut -3-  .

      > Tightening - torque 100 Nm (74 ftlb.) 

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Tie-rod ball on wheel bearing housing

   8. 1.8 Tighten new  screw -4-  .

      > Initial tightening 70 Nm 

      > Final tightening + 180° 

   9. 1.9 Tighten new  screw -3-  .

      > Initial - tightening 90 Nm (67 ftlb.) 

      > Final tightening + 90° 

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Lower trailing arm

   10. 1.10 Tighten nut -1-  .

       > Tightening torque 9 Nm 

       Courtesy of PORSCHE CARS NORTH AMERICA, INC.

       Front angle sensor for headlight beam adjustment on lower trailing arm