F 250 4WD Super Duty V8-6.4L DSL Turbo (2008)
3. Disconnect the rear driveshaft from the transfer case and position it aside.
4. Using the special tool to prevent the flange from turning, remove and discard the rear output flange nut.
5. Using the special tool, remove the flange.
6. Using the special tools, remove the rear output seal.
7. Inspect the flange seal surface for wear or damage. Install a new flange, if necessary.