Ford 2003 Mustang Workshop Manual page 462

Gauge, Differential Clutch
205-135 (T80P-4946-A)
Gauge, Differential Clutch
Torque
205-013 (T59L-4204-A)
Remover, Bearing
205-055 (T71P-4621-B)
Holding Fixture, Transmission
307-003 (T57L-500-B)
Disassembly
Initial disassembly
1. Remove the differential housing cover (4033) and drain the lubricant into a suitable container.
2. Wipe the lubricant from the internal working parts and inspect the parts for wear and damage.
3. Using the special tool, measure and note the differential ring gear backface runout.
Remove the special tool.