Install new O-rings whenever a fitting joint is opened.

Tools Required

J 38042 Dual O-Ring Tube Separator

Perform the following steps in order to service the dual O-ring joint:

1. Inspect the O-ring seals and fittings for any nicks or deformities.

Replace any damaged components in order to prevent refrigerant leakage.

2. Recover the refrigerant from the system.
3. Use the J 38042 in order to separate the joint while loosening the female nut.

Use a nonmetallic tool when removing the O-rings in order to prevent the chance of damaging the seal surface.

4. Avoid any excessive stretching and twisting of the replacement O-rings.
5. Align and completely push together the end forms for the pilot-to-bore insertion.
6. Apply a small amount of 525 viscosity refrigerant oil in order to ease the insertion of the O-rings.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Important: Dual O-ring fittings are different in size from the standard A/C fitting O-rings.

7. Install the dual O-ring fittings.

Tighten
Tighten the aluminum nut to 24 N·m (18 lb ft).