F 150 2WD Lightning V8-5.4L SOHC SC VIN 3 (2001)
8. Rotate the differential case to make sure it rotates freely.
9. Using the special tool, measure the ring gear backlash.
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If the backlash is within specification, go to Step 14.
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If a zero backlash condition occurs, go to Step 10.
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If the backlash is not within specification, go to Step 11.
10. If a zero backlash condition occurs, add 0.51 mm (0.20 inch) to the RH side and subtract 0.51 mm (0.020 inch) from the LH side to allow
backlash indication. Check the backlash. Repeat Step 9.