Note. The rear wheel hub and bearings are a one-piece assembly and must be replaced as an assembly.
Withdrawal
1. Loosen the wheel nuts, raise the vehicle and secure it on stands. Remove the wheel.
2. Pull the brake drum off the hub (refer to chapter 9).
3. Using a Tox N55 head, unscrew the four bolts securing the hub to the trailing arm, which will become accessible if the hub flange is rotated so that the bolt appears in the hole (see illustration). Remove the upper rear bolt last, as there is a small gap between the bolt and the parking brake pin.
12.3. Using a Tox N55 head, remove the four hub bolts
4. Remove the hub from the lever by removing it from the brake mechanism. Reinstall the two bolts through the brake shield into the trailing arm so that the brake mechanism does not hang on the pipeline (see illustrations).
12.4a. Pull out, turning, the hub | 
12.4b. Temporarily tighten the two bolts (indicated by arrows), to attach the brake to the trailing arm without letting it hang on the hydraulic lines |
Installation
5. Position the hub on the trailing arm and align the holes in the brake shield. Insert the bolts starting from the back top. A magnet can be useful to guide the bolts through the hub flange (see illustration). After all four bolts have been inserted, tighten them to the torque specified in the specifications in this chapter.
12.5. When screwing in bolts, you can use a magnet
6. Install the brake drum and wheel. Lower the vehicle and tighten the wheel nuts to the torque specified in the specifications chapter 1.