Three problems related to axle hubs have been reported for the 1997 Ford F-250. The most recently reported issues are listed below.
The front hubs would not lock in low range without the front end making a loud bang then grind, then failed completely.
The 4-wheel drive became inoperative due to a broken hub. Dealer could not determine the cause. Based on discussion at Ford dealership, the auto hubs seem to be failing regularly.
Front hubs will not kick in while in 4- wheel drive. Cause is unknown. But consumer knows another consumer with same defect.