Ford 2003 Mustang Workshop Manual page 2801

Using the special tools, press the bearing spacer, the reverse gear synchronizer cone and first
gear from the output shaft.
6. Remove the first gear needle bearing.
Inspect the needle bearing for wear or damage. Install a new needle bearing as
necessary.
7. Remove the first gear synchronizer inner cone, the first gear synchronizer outer cone and the
first gear synchronizer blocking ring.
Inspect all components for wear or damage. Install new components as necessary.