Spring Lock Coupling

Spring Lock Coupling Disconnect Tool Set:

Special Tool(s)

DISCONNECT
1. Recover the refrigerant. Refrigerant Recovery







2. Remove the A/C tube lock coupling clip.







3. Using the special tool, disengage the spring lock coupling fittings.







4. Remove the O-ring seals with a non-metallic tool.

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.







5. Remove the A/C tube lock coupling spring with a small hooked wire.

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.

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 PAG Compressor Oil YN-12-C 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 one minute at moderate speed (less than 1,500 rpm) or until the surface is clean and free of scratches or foreign material.

CAUTION: Maintain low speed drill rotation when inserting or removing the cleaning tool to prevent axial scratches which may cause future leaks.

7. Clean the fitting with a lint-free cloth.
8. Inspect the surface for grooves or scratches. If grooves or 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 Compressor Oil YN-12-C or equivalent meeting Ford specification WSH-M1C231-B.







3. Install the O-ring seals.
1 Lubricate the O-ring seals with PAG Compressor Oil YN-12-C or equivalent meeting Ford specification WSH-M1C231-B.

CAUTION: Use only new green O-ring seals. The use of any O-ring seals other than specified may result in intermittent leakage during vehicle operation.

NOTE: Some connections may have two or three O-ring seals.







4. Connect the spring lock coupling fittings with a twisting motion until the A/C tube lock coupling spring snaps over the flared end of the female fitting.







5. Install the A/C tube lock coupling clip.
6. Charge the system.