Checking the technical condition
Check the condition of the hub, paying attention to cracks and wear on the splined surface.
Check up a condition of a rotary fist, having paid attention to cracks.
Check the technical condition of the bearing.
Attention! If there is play between the outer race of the bearing and the steering knuckle or the inner race of the bearing and the hub, replace the bearing or damaged parts.
Removing the hub
Attention! If the hub is removed, be sure to replace the hub bearing with a new one, as when the hub is removed, damage is formed on the friction surface of the bearing.
To remove the hub from the steering knuckle, use the following special tool.
Hub and wheel bearing removal tool (MV991056 or MV991355).
Front wheel hub removal and installation tool (MV991017).
Spacer sleeve (MV991000).
Removing the wheel bearing
Crush the oil seal in two places so that the tabs of the special tool can grab (from the outside) wheel bearing inner race.
Attention! During withdrawal (from the outside) wheel bearing inner race, be careful not to drop the hub.
Remove from hub (from the outside) wheel bearing inner race using a bearing puller (MV990810).
Install on wheel bearing (from the outside) the inner ring that was removed from the hub. Remove the wheel bearing using the special tool listed below. Lever (MV990938). Mandrel (MV990935). Hub and wheel bearing removal tool (MB991056 or MB991355).
Installing the wheel bearing
Lubricate the hub bearing with grease.
Apply a thin layer of grease to the contact surfaces of the steering knuckle and bearing.
Attention! When pressing the hub bearing, apply force to the outer ring. Otherwise, the bearing will be damaged.
Press in the bearing using the special tool listed below.
Mandrel for installing rear suspension silent blocks (MV990883).
Base for installation of rear suspension silent blocks (MV990890).
Checking the moment of friction forces on the hub
Fix the bolt and tighten the nut.
Tighten the special tool listed below to the specified torque and then press the hub into the steering knuckle.
Front wheel hub removal and installation tool (MV991017).
Spacer sleeve (MV991000).
Rotate the hub to bring the bearing into position.
Using the special tool listed below, measure the friction torque on the hub.
- torque wrench (MV990685)
- special head (MV990326)
- Permissible value: 1.8 Nm.
The magnitude of the moment of friction forces should not exceed the allowable value, and the rotation of the hub should be smooth.
Checking the axial play of the wheel bearing
Using the special tool listed below, measure the end play of the hub bearing and check if it is within the allowable value.
- Front wheel hub removal and installation tool (MV991017)
- Spacer sleeve (MV991000)
- Allowed value: 0.05mm
If the nut is tightened to the specified torque of 245±29 Nm, and the axial play exceeds the allowable value, then the possible cause of this may be incorrect installation of the bearing, hub and / or steering knuckle. Replace the wheel bearing and install it again.
Checking the technical condition
Check the condition of the inner surface of the steering knuckle, paying attention to wear and cracks.
Check the condition of the seating surfaces of the hub and brake disc of the front wheel, paying attention to wear and contamination.