Abstract: A locking hub assembly has a hub rotatably engaged to a vehicle's non-rotating axle and a manually controlled actuator for selectively switching the hub assembly between an engaged position for rotatably fixing the hub to the axle and a disengaged position for freeing rotation of the hub on the axle. A locking mechanism for the hub assembly has a lock operatively engaged with the actuator and at least one throw arm. The lock is selectively operable between: a locked position in which the throw arm is extended into locking engagement with the hub to prevent operation of the actuator, and to prevent removal of the actuator from the hub as well as the hub from the axle; and, an unlocked position in which the throw arm is retracted from locking engagement to permit operation of the actuator.