F 350 4WD Super Duty V10-6.8L VIN Z CNG (2003)
Backlash not within specification
10. To increase or decrease backlash, remove the bearing caps, and install a thicker shim and a thinner shim as shown.
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If backlash is not within specification, correct by increasing the thickness of one differential bearing shim and decreasing the thickness on the
other differential bearing shim by the same amount.
11. Install the bearing caps and bearing cap bolts.
12. Rotate the differential several times to make sure the differential bearings are properly seated.
