F 550 2WD Super Duty V10-6.8L VIN Z Bi-Fuel (2001)
13. Assemble the drive pinion bearing preload shims onto the pinion and install the pinion into the differential housing.
14. Install the outer pinion bearing.
15. Using the special tool, install the pinion flange.
16. Install the old washer and the lock nut.
17. Using a Nm (inch-pound) torque wrench, rotate the pinion. The torque must read as specified.
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To increase the preload, remove drive pinion bearing preload shims. To decrease the preload, add shims.