F 450 4WD Super Duty V8-7.3L DSL Turbo VIN F (2001)
12. Check the differential ring gear and pinion backlash in four equally spaced positions around the differential ring gear.
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The acceptable backlash tolerance is ± 0.0508 mm (0.002 inch) from the backlash etched in the differential ring gear.
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If the backlash tolerance varies more than 0.080 mm (0.003 inch) between the four positions, remove the differential and determine the cause.
13. Tighten the bolts.
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Check the differential ring gear and pinion backlash, as described in the previous step, after tightening the bolts.
14. Install the adjusting ring locks.
15. Install the rear anti-lock brake sensor.
16. Install the carrier.