Dakota Quad Cab 4WD V6-3.9L VIN X (2001)
Hose/Line HVAC: Service and Repair
A/C Discharge Hose/Line Replacement
REMOVAL
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. Disconnect and isolate the battery negative cable.
2. Recover the refrigerant from the refrigerant system.
3. Unplug the wire harness connector from the a/c pressure transducer switch.
4. Remove the fasteners and disconnect the refrigerant line couplers at the condenser and the accumulator. Install plugs in, or tape over all of the
opened refrigerant line fittings.
5. Remove the fastener that secures the refrigerant line support bracket near the compressor.
6. Remove the screw that secures the refrigerant line manifold to the compressor. Install plugs in, or tape over all of the opened refrigerant line
fittings.
7. Remove the suction and discharge line assembly from the vehicle.
INSTALLATION
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 all of the refrigerant line fittings. Install the refrigerant line couplers to the condenser and the accumulator. Tighten
the fasteners to 22 ± 3.38 Nm (200 ± 30 in. lbs.).
2. Install the refrigerant line manifold to the compressor. Tighten the mounting screw to 22 Nm (200 in. lbs.).
3. Install the fastener that secures the refrigerant line support bracket near the compressor. Tighten the mounting screw to 6.77 ± 1.7 Nm (60 U.S in.
lbs.).
4. Plug in the wire harness connector to the pressure transducer switch.
5. Connect the battery negative cable.
6. Evacuate the refrigerant system.
7. Charge the refrigerant system.
