Ford 2003 Mustang Workshop Manual page 348

7. Install the right side bearing cap and tighten the left side and right side bolts to specification.
8. Rotate the differential assembly several times to verify that the differential bearings have seated
correctly.
Measuring backlash
9. Using the special tools, measure the ring gear backlash.
If backlash is within the specification, refer to Backlash within specification in this
procedure. The specification shown is the full allowable range. For the preferred range,
refer to Specifications in this section.
If a zero backlash condition occurs, refer to Zero backlash in this procedure.
If backlash is not within the specification, refer to Backlash not within specification in this
procedure.
Backlash Change Required Thickness Change Required
mm
0.025
0.050
Inch mm
0.001 0.050
0.002 0.050
Inch
0.002
0.002