F 250 2WD Pickup V8-5.4L CNG VIN M (1999)
13. Loosen the forcing screw, and remove the step plate and nut from the side gear bores. Install the differential pinion shaft in the differential case.
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Install a new differential pinion shaft lock bolt finger-tight.
14. Install the ring gear and, if removed, a new anti-lock speed sensor ring on the differential case and tighten the retaining bolts.
15. Replace the differential bearings, if removed.
16. Install the differential case.
