The front bearing arrangement often found on FWD
and 4WD vehicles is often nonserviceable. These bearings
are pressed in and out of the steering knuckle. To do
this, the axle or half shaft is removed, as is the steering
knuckle and hub assembly. The bearings may be sealed
and require no additional lubrication or they may need to
be packed with grease when they are reassembled. In
most cases, the bearings are not adjusted. A heavily
torqued axle nut is used to hold the assembly in place on
the axle. This nut is typically replaced after it has been removed
and is staked in place after it is tightened