2. Clamp the hub fastener in a vice and, using a hammer and a metal rod of suitable diameter, knock the hub out of the fastener (Pic. 10.5). Remove the brake disc shield from the hub mounting, if necessary.
Pic. 10.5. Removing the hub from the fastener
3. Using a suitable extractor (Pic. 10.6), remove the inner ring from the hub, remove the seal with lubricant.
Pic. 10.6. Using an Extractor to Remove a Wheel Bearing Race
4. Remove the inner race of the bearing.
5. Remove the retaining rings and knock the outer bearing ring out of the hub fastener.
6. Clean the bearing, hub and hub fastener. Check all components, replace them if necessary.
7. If the wheel stand needs to be replaced, it must be pressed out of the hub flange. Note that the struts and hub are marked with the symbol "N" or "R". Before replacing parts, check that the new part has the same designation as the old one being replaced.
8. When assembling, install the first snap ring into the inner groove of the hub fastener, then install the outer bearing race into the hub fastener until it is against the snap ring. Install the second retaining ring.
9. Lubricate the inner races of the bearing, install them into the outer race of the bearing. If old bearings are used, check that each inner race is installed in its original position.
10. Lubricate the seal lips and drive the outer seal into the hub retainer.
11. Place the hub on the beam and lower the fastener onto it. Using a hammer and socket on the inner ring of the bearing, drive the fastener assembly onto the hub (pic. 10.7).
Pic. 10.7. Installing the fastener on the hub and bearings
12. Check that the bearing is installed correctly, measure the torque, which should be within the specified range.
13. If a press is available, apply 49 kN of pressure to the inner race of the bearing. Quickly rotate the hub fastener a few turns in each direction, then measure the torque with a steelyard attached to the pinch bolt hole at the top of the suspension strut (see fig. 10.8); the resulting value must be within the specified range.
Pic. 10.8. Checking the front wheel bearing torque on the fastener
14. If there is no press, temporarily install the hub fastener assembly into the vehicle so that the drive shaft nut can be tightened with the tightening force regulated by the Specification. Alternatively, the drive shaft can be removed and attached to a hub fastener clamped in a vise for testing. Rotate the hub quickly a few turns in each direction, then measure the torque with a steelyard attached to one of the wheel stands (see fig. 10.9); the resulting value must be within the specified range.
Pic. 10.9. Checking the torque of the front wheel bearing on the wheel stand
15. If the torque is incorrect, it means the bearings may be faulty or too tight.
16. Once the hub is properly seated on the bearings, lubricate the seal lips and drive the inner seal into the hub retainer; the outer flange should protrude no more than 3.5 mm from the hub mounting element (see fig. 10.10).
Pic. 10.10. Installing the Inner Seal on the Hub Fastener Protrusion S should be no more than 3.5 mm
17. Install the hub fastener to the vehicle.