Replacing Rear Axle Housing

Information 

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

1. Convert servo motor for rear axle steering.

   > 488319 REMOVING AND INSTALLING SERVO MOTOR FOR REAR AXLE STEERING

2. Remove threaded joint -1-  for trailing arm, shock absorber and connecting link on both sides of the vehicle and remove shock absorbers.

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   Mounting for trailing arm with shock absorber and connecting link

3. Remove cable holder -1-  on the rear axle housing on both sides of the vehicle.

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   Cable holder mounting

   1. 3.1 Loosen electric connector -2-  from the holder and unscrew fastening screw -3-  .
4. Loosen holder for rear angle sensor for headlight beam adjustment at the top -1-  on both sides of the vehicle from the rear axle housing.

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   Mounting for holder for rear angle sensor for headlight beam adjustment at the top

   1. 4.1 Unscrew fastening screw -4-  .
5. Remove tie rod -1-  and upper control arm -2 and 3-  on both sides of the vehicle from the rear axle housing.

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   Upper control arm mounting

   1. 5.1 Remove threaded joints -4, 5 and 6-  .
6. Remove threaded joints for trailing arm on rear axle housing on both sides of the vehicle.

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   Mounting for trailing arm on rear axle housing

   1. 6.1 Remove eccentric threaded joint -1-  .
   2. 6.2 Remove threaded joint -2-  .
7. Convert struts -1-  .

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   Mounting for struts

   1. 7.1 Unscrew fastening screws -2-  and secure struts with new fastening screws > Initial tightening 50 Nm (36.9 ftlb.)  > Final tightening torque angle + 90 
8. Install threaded joints for trailing arm on rear axle housing on both sides of the vehicle.

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   Mounting for trailing arm on rear axle housing

   1. 8.1 Install eccentric threaded joint -1-  > Tightening torque 160 Nm (118 ftlb.) 
   2. 8.2 Install new threaded joint -2-  > Initial tightening 70 Nm (52 ftlb.)  > Final tightening torque angle + 180° 
9. Fit tie rod -1-  and upper control arm -2 and 3-  on both sides of the vehicle on the rear axle housing.

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   Upper control arm mounting

   1. 9.1 Install threaded joint -4-  > Tightening torque 100 Nm (74 ftlb.) 
   2. 9.2 Install new threaded joint -5-  > Initial tightening 70 Nm (52 ftlb.)  > Final tightening torque angle + 90° 
   3. 9.3 Install new threaded joint -6-  > Initial tightening 70 Nm (52 ftlb.)  > Final tightening torque angle + 90° 
10. Secure holder for rear angle sensor for headlight beam adjustment at the top -1-  on both sides of the vehicle on the rear axle housing.

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    Mounting for holder for rear angle sensor for headlight beam adjustment at the top

    1. 10.1 Tighten new fastening screw -4-  > Initial tightening 3 Nm (2 ftlb.)  > Final tightening + 45° 
11. Fit cable holder -1-  on the rear axle housing on both sides of the vehicle.

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    Cable holder mounting

    1. 11.1 Tighten fastening screw -3-  and secure electric connector -2-  to the holder > Tightening torque 8 Nm (5.9 ftlb.) 
12. Fit shock absorbers and install new threaded joint -1-  for trailing arm, shock absorber and connecting link on both sides of the vehicle > Initial tightening 70 Nm (51.6 ftlb.)  > Final tightening torque angle + 180° 

    Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Mounting for trailing arm with shock absorber and connecting link