Town Car V8-4.6L (2008)
Backlash not within specification
11. To increase or decrease backlash, remove the bearing caps and install a thicker shim and a thinner shim accordingly.
^
If backlash is not within the specification, increase the thickness of one differential bearing shim and decrease the thickness of the other
differential bearing shim by the same amount.
12. Rotate the differential assembly several times to verify that the differential bearings seated correctly.
13. Using the special tools, recheck the backlash.
^
If backlash is within the specification, refer to Backlash within specification. If backlash is not within the specification, repeat Backlash not
within specification.