Its best to use a torque wrench when adjusting the wheel bearings . Initial torque should be 70 Ft Lbs as you work the hub back & forth , Back the the adjusting nut 90 degs & then retorque to 20 Ft Lbs , there should be 0 play in the hub & it should turn fairly easily . Hubs will get warm , but they shouldnt be so hot that it burns to touch them .