F 150 2WD Lightning V8-5.4L SOHC SC VIN 3 (2001)
13. Rotate the differential several times to make sure the differential bearings are correctly seated.
14. Using the special tool check the backlash.
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If backlash is within specification, go to Backlash within specification. If not, go to Backlash not within specifications within this procedure.
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The specification shown in the illustration is the total allowable range.
Backlash within specification
15. Remove the bearing caps and bolts.
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To establish differential bearing preload, increase both left and right shim sizes by the specification shown in the illustration.
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Using a special tool, make sure the differential bearing shims are fully seated and the assembly turns freely.
16. Install the bearing caps and bearing cap bolts.