Cherokee 2WD L6-4.0L VIN S (1998)
Hose/Line HVAC: Service and Repair
A/C Discharge Hose/Line Replacement
Left Hand Drive
A/C Discharge Hose/Line Replacement
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.
WARNING: REVIEW THE WARNINGS AND CAUTIONS BEFORE PERFORMING THE FOLLOWING OPERATION.
REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Recover the refrigerant from the refrigerant system. Refer to: Heating and Air Conditioning, Service and Repair, Refrigerant Recovery, See:
Service and Repair/Refrigerant Recovery
3. Unplug the wire harness connector from the high pressure cut-off switch.
Suction And Discharge Line Remove/Install
4. Disconnect the discharge line refrigerant line fitting from the condenser inlet tube.
5. Remove the nut that secures the suction line block fitting to the accumulator outlet. Install plugs in, or tape over all of the opened refrigerant line
fittings.
6. Remove the screw that secures the suction and discharge 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
1. Remove the tape or plugs from the suction and discharge line manifold and the compressor. Install the suction and discharge line manifold to the
compressor. Tighten the mounting screw to 28 N.m (250 in lbs).
2. Remove the tape or plugs from the suction line and the accumulator outlet block fittings. Install the suction line to the accumulator outlet and
tighten the mounting nut to 9 N.m (80 in lbs).
3. Remove the tape or plugs from the refrigerant line fittings on the discharge line and the condenser inlet tube. Connect the discharge line refrigerant
line coupler to the condenser inlet tube.
