- Inertial puller - Emb. 880
- Hub cap extractor - Rou. 943
Tightening torques:
- Wheel block - 90 Nm
- Hub nut - 175 Nm
The rear wheel hub bearings are similar in design to the front wheel hub bearings; they do not require maintenance and adjustment during operation. The criterion for assessing the state of the bearing is the value of the axial clearance, not exceeding 0.03 mm. Axial clearance is measured in the same way as for the front hubs.
Removing
- turn on reverse gear (or set the selector lever to position «R»);
- raise the rear of the car and install safety stops under the body;
- remove the wheel from the desired side;
- remove the brake drum;
Figure 5.16. Removal of a lock ring of the bearing of a nave
- remove the bearing circlip from the brake drum (Figure 5.16);
Figure 5.17. Pressing the bearing out of the hub using a cylindrical mandrel
- using a suitable cylindrical mandrel, press the bearing out of the hub (Figure 5.17);
- thoroughly clean the hub from grease and dirt, remove possible nicks and burrs with a needle file. Inspect the hub for cracks or other damage.
The bearing and retaining ring are replaced with new ones.
Installation
- make sure (if it is possible) the presence of grease in the inner cavity of the bearing, lightly lubricate the surface of the bearing rings with grease;
- using a mandrel, press the bearing into the hub, applying force to the outer ring, until it stops against the shoulder of the brake drum;
- install a new retaining ring;
- install a brake drum on a pre-lubricated hub axle;
- install a new lock nut and tighten it to the specified torque;
- perform other operations in the reverse order of removal;
- press the brake pedal several times, adjusting the position of the brake pads;
- make sure the wheel rotates easily without any binding.