SKF wheel hub bearings http://www.alierbearings.com/brand/skf/index49.html  is an important moving part of automobile.
The wheel bearing is responsible for reducing the friction resistance during the operation of the chassis and maintaining the normal operation of the vehicle.
If the wheel bearing fails, it can cause noise, bearing heat and other phenomena, especially the front wheel is more obvious, which can lead to dangerous phenomena such as out of control.
Therefore, hub bearings must be maintained on time.
(1) remove the hood of the hub shaft and cover the dust;
(2) remove the tire nut and tire, and be careful not to touch the thread of the tire bolt.
If it is a disc brake, remove the brake and then use the clamp to remove the lock or lock pin.
(3) remove the wheel hub with a special tool;
(4) remove the old grease from the bearing, journal and hub cavity, clean the hub bearing and the shaft neck with a cleaning agent and dry with a cloth, and then wipe the inner cavity of the hub with a cloth.
(5) check the hub bearing and bearing ring, and find out that there are cracks, fatigue flaking and loose bearing roller, and the bearing should be replaced.
Bearings should also be replaced if there is a pitting point on the bearing ring.
(6) check the bearing inside diameter and shaft neck with situation, fit clearance should be no greater than 0.1 when Omm measure shaft neck, should be in vertical ground fluctuation two parts (the place for the greatest wear parts) measurement.
If the clearance exceeds the specified limit, the bearing should be replaced to restore normal clearance.
It is not allowed to cut the gap between the shaft neck and the spines.
(7) after all the parts are in accordance with the requirements, apply the inner bearing to grease and then release the wheel hub.
(8) when applying grease to the inner cavity of the bearing, it should be noted that the grease should be pressed into the bearing until the grease comes out from the other side of the bearing.
Apply a thin layer of grease to the inner and shaft of the hub cavity to prevent rust.
Notice that the grease in the hub cavity should not be applied too much, or it will affect the heat dissipation and braking.
(9) put the hub and outer bearing back to the shaft neck, adjust the nut to the shaft with the hand, and then tighten the adjusting nut with the shaft wrench.
After tightening the nut, turn the hub several times around to see the bearing installation.
On the other hand, the bearing and seat ring are properly matched by rotation.
At this time the bearing compactness is appropriate, the wheel is free to rotate and feel no axial clearance.
(10) finally install the lock, fixed nut, tire, dustproof cover and decorative cover.
(11) adjust, wheel hub bearing a mileage traveled around (1 okm), parking, used in dry to touch the temperature of the wheel hub, if fever, adjust the tight, for bearing should be readjusted, appropriate release bearing tightness.