- Recover and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
- Remove the evaporator tube. Refer to Evaporator Tube Replacement .
- Remove and discard the existing orifice tube.
- Wipe the A/C line with a clean cloth before cutting.
- Make two marks 38 mm (1.5 in) apart on the liquid line.
- Using the line cutter, cut the liquid line at the marked position and remove any burrs.
- Remove the nuts, the ferrules and the O-rings from the in-line filter.
- Push the nuts and ferrules over each of the liquid line halves.
- Install the ferrules with the small end toward the nut.
- Install the liquid line into the in-line filter making sure to bottom it out.
- While holding liquid line bottomed-out in filter, tighten the nuts securely.
- Disassemble the filter from the liquid line.
- Lubricate the O-rings with clean 525 viscosity refrigerant oil and install them onto the liquid line.
- Install the liquid line into the filter bottoming it out.
- While holding liquid line bottomed-out in filter, tighten the nuts securely.
- Install the evaporator tube. Refer to Evaporator Tube Replacement .
- Evacuate, charge and leak test the system. Refer to Refrigerant Recovery and Recharging .
- Lower the vehicle.
Important: The in-line filter, ACDelco P/N 15-1760 must be installed to the A/C evaporator tube (liquid line) between the condenser and the evaporator. The installation of this in-line filter eliminates the need for flushing.
Important: The liquid filter, ACDelco P/N 15-1760 will have an orifice contained in it.
Important: Do not allow metal burrs from cutting the liquid line from dropping into the line and causing contamination.
Important: Do not install the O-rings at this step.
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.
Tighten
Tighten the nuts to 15 N·m (11 lb ft).
Tighten
Tighten the nuts to 15 N·m (11 lb ft).
