Ford 2003 Mustang Workshop Manual page 3096

tool to prevent axial scratches which may cause future leaks.
Polish for one minute at moderate speed (less than 1,500 rpm) or until the surface is clean and
free of scratches or foreign material.
7. Clean the fitting with a lint-free cloth.
8. Inspect the surface for grooves or scratches. If grooves and scratches are still present, install a
new component.
9. Clean the O-ring seal grooves with a 300 mm (12 inch) length of natural fiber string.
Loop the string around the grooves and pull the string back and forth.
10. Remove any foreign material from the grooves with a lint-free cloth.
Connect
1. Install the A/C tube lock coupling spring.
2. Lubricate the inside of the coupling with PAG Refrigerant Compressor Oil (R-134a Systems) or
equivalent.