Take extreme care when removing and installing bearing cups and cones. Use only an arbor press for installation, as a hammer may not properly align the bearing cup or cone. Burrs or nicks on the bearing seat will give a false end play reading, while gauging for proper shims. Improperly seated bearing cup and cones are subject to low-mileage failure.Bearing cups and cones should be replaced if they show signs of pitting or heat distress.If distress is seen on either the cup or bearing rollers, both cup and cone must be replaced.Bearing drag torque specifications must be maintained to avoid premature bearing failures.Used (original) bearing may lose up to 50 percent of the original drag torque after break-in.All bearing adjustments must be made with no other component interference or gear inter-mesh.Oil all bearings before checking turning torque.