F 550 4WD Super Duty V10-6.8L VIN D (2004)
31. CAUTION: Do not spread the differential housing more than specified.
CAUTION: Avoid nicking the ring gear teeth and the anti-lock speed sensor ring during assembly.
Using the special tools, spread the differential housing to the specification.
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Use a rawhide hammer to seat the differential into the differential housing pocket.
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Remove the special tools.
32. CAUTION: Match the mating letters as noted during disassembly.
Install the bearing caps, aligning the letters with those on the differential housing. Tighten the bolts to specification.
33. Using the special tools, measure the differential ring gear and pinion backlash at three equally spaced points.
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The backlash tolerance is 0.13 - 0.203 mm (0.005 - 0.008 inch) and cannot vary more than 0.05 mm (0.002 inch) between points checked. A
backlash variation of more than 0.05 mm (0.002 inch) indicates gear/case runout.
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Move the differential ring gear toward the pinion to correct high backlash.
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Move the differential ring gear away from the pinion to correct low backlash.
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Moving a specified amount of differential bearing shims from one side of the differential to the other makes these corrections.
