To easily diagnose a wheel bearing take the vehicle for a drive down a road with steep curves and listen for the noise to disappear.
Curve right vehicle weight shifts left if the noise disappears right wheel bearing.
Curve left vehicle weight shifts right if the noise disappears left wheel bearing.
this can also indicate a bad inner CV Joint if you have allot of play in the axles.
Dusty oil seepage past a seal is normal if its wet replace the seal. Always a good idea to replace the seals when replacing axle shafts. but that's just me.
C.V. joints should have almost no up and down movement just enough to be noticed. Allows for outer CV joint to flex.
C.V. joints use a roomy empty parking lot.
hard right popping, clicking, Right outer CV joint
hard left popping, clicking, Left outer CV joint.
Warped or damaged rotors / drums, dragging caliper, tire may have shifted belt tires are shot, replace the tires.