It is most likely a New Process 205 transfer case.
It is left of center
For a 1997 Ford F250, the transfer case typically uses ATF (Automatic Transmission Fluid), specifically Mercon or Mercon V. It's important to check the owner’s manual or consult with a mechanic to ensure you're using the correct fluid, as specifications can vary based on the specific transfer case model. Regular maintenance, including fluid changes, will help ensure optimal performance.
Drop the driveshafts. Remove the transfer case with a transmission jack. it's heavy. Be careful. have fun realigning the spud shaft when replacing.
80-86 Full size Bronco 80-86 F150, F250, F350
The transfer case for a 4x4 is bolted to the rear of the transmission on your Ford Ranger
The transfer case is attached to the Transmission.
The transfer case is mounted to the rear of the transmission
For a 1997 Ford F-250, the recommended oil for the transmission is typically Mercon ATF (Automatic Transmission Fluid) for the automatic transmission models, while manual transmissions usually require a 75W-90 gear oil. For the transfer case, Ford generally recommends using a fluid that meets the specifications of Mercon ATF, although some models may use a specific transfer case fluid. Always check the owner's manual for the exact specifications and recommendations for your specific transmission and transfer case type.
On a 1997 Ford Explorer 4x4 : The transfer case is bolted to the rear of the transmission underneath the vehicle
That can be a problem with the fuse, the switch might be faulty. The motor at the transfer case might be unplugged.
The transfer case for your 4X4 is bolted to the rear of the transmission
How to remove a transfer case in a 97 f-250