Remove the front wheel.
Secure the brake disc to the hub using two wheel mounting bolts.
Without damaging the surface of the linings, move the brake pads away from the brake disc.
Remove the hub cap using an impact puller as shown in Fig. 214.
Fig. 214. Removing the hub cap using an impact puller.
1 - front wheel hub,
2 - puller,
3 - trunnion.
Remove the spring contact to eliminate radio interference.
Loosen the Allen bolt on the split nut (2) Fig. 215 and, by rotating the hub, tighten the split nut.
Fig. 215. Adjusting the axial clearance of the hub bearings.
1 - front wheel hub,
2 - split nut,
3 - trunnion,
4 - support washer.
From this position, unscrew the split nut by ⅓ of a turn and, using a few blows of a hammer with a plastic striker on the journal (3), loosen the tension on the bearing rollers.
Install the indicator on the hub as shown in Fig. 216, move the indicator tip by 2 mm.
Fig. 216. Measuring axial clearance in front hub bearings.
1 - indicator stand,
2 - split nut,
3 - washer,
4 - front wheel hub.
Press firmly on the hub in both directions to measure the axial clearance. Rotate the hub several times between measurements.
Tighten the split nut mounting bolt to 12 Nm and measure the axial clearance in the bearings again. If the axial clearance is adjusted correctly, the washer located between the outer roller bearing and the split nut can be turned with a finger. Always adjust the axial clearance in the hub bearings using an indicator.
Install a spring contact to eliminate radio interference.
Fill the hub cap with the required lubricant before stamping and press it into the hub using a tool.
Install the front wheels and stand the car on its wheels.