Raise the vehicle and support it securely on jackstands. Remove the rear driveshaft. Pry out the seal with a screwdriver or a seal removal tool, taking care not to damage the seal bore. Lubricate the new seal lips with petroleum jelly or multi-purpose grease. Drive the seal into place using a seal driver or large socket, ensuring the outside diameter of the socket is slightly smaller than the outside diameter of the seal. The remainder of the installation follows the reverse order of removal.