F 550 4WD Super Duty V10-6.8L VIN D (2004)
28. NOTE: Do not install the pinion oil seal at this time.
Using the special tool, install the pinion flange.
29. Install the old washer and pinion locknut.
30. Using a Nm (inch-pound) torque wrench, rotate the pinion. The torque must read as specified.
To increase the bearing preload, remove drive pinion bearing preload shims. To decrease the preload, add pinion bearing preload shims.
31. With the drive pinion bearings at the correct preload as determined in this procedure, remove and discard the pinion locknut and washer.
