If access is available, also check the bearing for signs of wear and tear, and with an oily film and free of any contamination in the form of a gritty paste, or milky-white color. Insert a screwdriver and then remove the grease seal gently and without damages; then dispose the seal. Soak the bearings in the solvent and blow them with the compressed air when they are dry they should not spin. Check for bearing wear, pitting or scoring; mild blueing is acceptable but should the bearings or races of the load be badly worn or damaged then new bearings/races have to be fitted. Withdraw the used grease from the hub cavity and wipe off with solvent and after that blow off with compressed air and ensure that solvent does not come into contact with the brake shoe contact area. Freight car bearing races should be checked for signs of wear, overheating, pitting and corrosion; if found to be bad, they should be hammered out with Hammer and punch without damaging the hub. New races must be driven using either a bearing driver or an appropriately-sized pipe and hammer, but must not be bent or out of line. Using a clean grease gun fill the bearings with high temperature, multi purpose EP Grease from the back of the cage to the rollers . A small amount of grease should be applied on the hub cavity and spindle, the outer edge of the new grease seal should be lubricated and the bearing installed next before the new seal is pressed into the position where the lip is facing the inside. Finally make sure that the grease seal is in position on the hub and seat it properly by applying hammer and block of wood then grease the seal cavity, lip and the polished section of the spindle. Last but not the least, fit the rear brake drum/hub assembly and the wheel bearings need to be also aligned.