Ford 2003 Mustang Workshop Manual page 3094

4. Pull the spring lock coupling fittings apart.
5. CAUTION: Do not use metal tools to remove the O-ring seals. They can cause axial
scratches across the O-ring seal grooves, resulting in refrigerant leaks.
Remove the O-ring seals with a non-metallic tool.
6. CAUTION: Do not use a screwdriver or similar tool to remove the A/C tube lock
coupling spring; this can cause axial scratches across the O-ring seal grooves resulting
in refrigerant leaks.
Remove the A/C tube lock coupling spring with a small hooked wire.