Preliminary Work

Loosen all threaded connections on the wheel bearing housing.
> 425219 - REMOVING AND INSTALLING WHEEL BEARING HOUSING - PORTION ON "REMOVING"

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Lower trailing arm
1. 1.1 Only loosen nut -3- on the threaded joint -2 and 4- on the lower trailing arm -1- to the wheel bearing housing, do not unscrew fully.
2. Remove rear coil spring/air spring bellows.
  > 427219 - REMOVING AND INSTALLING COIL SPRING - PORTION ON "REMOVING"
  
  > 434319 - REMOVING AND INSTALLING AIR SUSPENSION BELLOWS - PORTION ON "REMOVING"