1996 Ford F250 Owner's Manual - Page 193

u When the vehicle is stopped while in 4H and the vehicle's direction is reversed from the previous direction, the automatic locking hubs momentarily disengage and then re-engage. The automatic locking hubs may click as they automatically engage in the new direction. To shift from 4H to 2H: Move the transfer case shift lever straight forward to the 2H position. This can be done at any speed. To disengage the automatic locking hubs, operate the vehicle in 2H in the opposite direction for approximately 10 feet (3 meters). For example: If you were driving the vehicle forward in 4H, the automatic locking hubs will disengage the next time the vehicle is driven in reverse in 2H for approximately 10 feet (3 meters). If you were driving the vehicle in reverse in 4H, the automatic locking hubs will disengage the next time the vehicle is driven forward in 2H for approximately 10 feet (3 meters). - Operating in 2H with the hubs locked increases fuel consumption, noise, vibration, and wear. For prolonged 2H operation on dry pavement, disengage the automatic locking hubs. To shift between 4H and 4L: Stop the vehicle and place the automatic transmission into NEUTRAL or depress the clutch on manual transmission vehicles. Push the transfer case shift knob down (toward the ground) and at the same time pull or push the lever straight forward or rearward (depending on the desired position, 4H or 4L) in order to shift the transfer case. This shift should be in 191