F 150 Heritage 4WD Pickup V8-5.4L CNG VIN M (2004)
backlash indication. Check backlash. Repeat Step 9.
Backlash not within specification
11. 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.
12. Install the bearing caps and bearing cap bolts.
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 in this procedure. If not, go to Backlash not within specification within
this procedure.
^
The specification shown in the illustration is the total allowable range. For the preferred range, refer to the Specifications.
