Ford 2003 Mustang Workshop Manual page 237

18. Remove and discard the subframe rear bolts.
19. Remove the springs (5560).
1. Carefully lower the subframe with the special tool 014-00765, allowing the subframe to
pivot on the front bolts.
2. Remove the springs and the spring insulators (5536).
Installation
1. NOTE: Inspect the spring insulators for wear or damage. Install new spring insulators if
necessary.
Make sure the spring insulators are correctly installed on the springs.