A/C Suction Hose/Line Replacement

REMOVAL

WARNING: REVIEW THE WARNINGS AND CAUTIONS IN THE FRONT OF THIS SECTION BEFORE PERFORMING THE FOLLOWING OPERATION.

1. Disconnect and isolate the battery negative cable.
2. Recover the refrigerant from the refrigerant system.

Fig.8 Suction Line - 1-6:

Fig.9 V-8 Suction Line:

3. Remove the retainer nut from the evaporator connection or.
4. Slide the suction line off the stud and liquid line. Install plugs in, or tape over all the opened refrigerant line fittings. Remove from clip.
5. Remove the bolt that secures the suction line fitting to compressor. Install plugs in, or tape over all of the opened refrigerant line fittings.
6. Remove the suction line assembly from the vehicle.

INSTALLATION

WARNING: REVIEW THE WARNINGS AND CAUTIONS IN THE FRONT OF THIS SECTION BEFORE PERFORMING THE FOLLOWING OPERATION.

Any kinks or sharp bends in the refrigerant plumbing will reduce the capacity of the entire air conditioning system. Kinks and sharp bends reduce the flow of refrigerant in the system. A good rule for the flexible hose refrigerant lines is to keep the radius of all bends at least ten times the diameter of the hose. In addition, the flexible hose refrigerant lines should be routed so they are at least 80 millimeters (3 inches) from the exhaust manifold.

High pressures are produced in the refrigerant system when the air conditioning compressor is operating. Extreme care must be exercised to make sure that each of the refrigerant system connections is pressure-tight and leak free. It is a good practice to inspect all flexible hose refrigerant lines at least once a year to make sure they are in good condition and properly routed.

1. Remove the tape or plugs from the suction line block fitting and the manifold on the compressor. Install the suction line block fitting to the manifold on the compressor. Tighten the mounting bolt to 25.4 Nm (225 in. lbs.).
2. Remove the tape or plugs from the refrigerant line fittings on the evaporator outlet and the suction line. Slide the suction line connection block over the liquid line and evaporator stud. Tighten the retaining nut to 28 Nm (250 in. lbs.).
3. Connect the battery negative cable.
4. Evacuate the refrigerant system.
5. Charge the refrigerant system.