F 450 4WD Super Duty V8-6.4L DSL Turbo (2008)
3. NOTE: Always install a new washer and locknut.
Using the Drive Pinion Flange Holding Fixture to hold the pinion flange, install the new washer and locknut.
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Tighten to 637 Nm (470 lb-ft).
4. NOTE: Align the driveshaft flange-to-rear axle pinion flange index marks.
Position the driveshaft flange on the pinion flange and install 4 new bolts.
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Tighten to 100 Nm (74 lb-ft).