Mustang GT V8-4.6L SOHC VIN X (1998)
7. Remove the green O-ring seals from the male fitting using Plastic O-ring Tool F5VH-17B017-AA or equivalent. Do not use a metal O-ring tool or
other type of metal tool such as a screwdriver or pick. They could cause axial scratches across the O-ring grooves resulting in refrigerant leaks.
COUPLING-CLEANING
1. Fabricate a cleaning tool from a 1/8 inch diameter brazing rod.
2. Cut an abrasive pad from maroon colored 3M Scotch Brite(R) with the dimensions corresponding to the coupling size.
Coupling Size
Pad Size
3/8 inch
25 x 50 mm (1 x 2 inch)
1/2 inch
25 x 50 mm (1 x 2 inch)
5/8 inch
25 x 76 mm (1 x 3 inch)
3/4 inch
25 x 102 mm (1 x 4 inch)
3. Assemble the pad to the tool.
4. Coat the abrasive pad with Motorcraft YN-12b refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B.
5. Roll the pad on the tool and install it in a variable speed motor drill.
6. Polish for 1 minute at moderate speed (less than 1500 rpm) or until the surface is clean and free of scratches or debris.
