Before remove wheel hub, maintenance preparations should be well done. First stopped the car and set up it bridge, in order to ensure the safe operation of maintenance. Then remove the wheel shaft cover, dust cover; and remove the tire and tire nut. But here needs to pay attention that do not hurt the tire bolt thread. For the disc brake, should remove brake shall first, then remove lock ring or pin clamp.
In the demolition of wheel hub, should use special tool. First scrape the old grease exist in bearing, axle and wheel hub cavity, cleaning wheel hub bearing and shaft neck with cleaning agent and dried with cloth, finnally wipe the inner cavity of the wheel hub use cloth. And check the wheel hub bearing and the bearing seat, if found cracks, spalling fatigue and bearing rollers loose phenomenon, should replace the bearings. In addition, if found pits in bearing race, also need to replace the wheel bearings.
The bearing bore diameter and bearing clearance interpolation should be in 0.10mm . When measure shaft neck, should meausure the twos which are vertical to the ground . If the fit clearance exceeds the specified service limit, should replace the bearings, so as to restore the normal clearance. Not allowing deburring, pitting to narrow the clearance in the shaft neck.
When all parts are compatible with the requirements, put the bearings oiled in the hub.