Grand Cherokee 2WD Limited V8-4.7L (2002)
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. Position the HVAC housing to the dash panel. Be certain that the evaporator condensate drain tube and the housing mounting studs are inserted
into their correct mounting holes.
2. Install the HVAC housing mounting nuts to the studs on the passenger compartment side of the dash panel. Tighten the nuts to 4.5 Nm (40 in. lbs.)
.
3. Connect the HVAC housing wire harness connectors.
4. Reinstall the rear floor heat ducts to the center floor heat duct outlets.
5. Install and tighten the nuts onto the HVAC housing mounting studs on the engine compartment side of the dash panel. Tighten the nuts to 7 Nm
(60 in. lbs.).
6. Reinstall the PCM to the passenger side dash panel in the engine compartment. See: Powertrain Management/Computers and Control
Systems/Engine Control Module/Service and Repair
7. Reinstall the coolant reserve/overflow bottle to the passenger side inner fender shield. See: Engine, Cooling and Exhaust/Cooling System/Coolant
Reservoir
8. If the vehicle is equipped with the manual temperature control system, connect the HVAC system vacuum supply line connector to the tee fitting
near the heater core tubes.
9. Unclamp/unplug the heater core hoses and tubes. Connect the heater hoses to the heater core tubes and fill the engine cooling system. See:
Engine, Cooling and Exhaust/Cooling System/Service and Repair
10. Unplug or remove the tape from the suction line and the evaporator outlet tube fittings. Connect the suction line to the evaporator outlet tube.
Tighten retaining nut to 28 Nm (250 in. lbs.).
11. Unplug or remove the tape from the liquid line and the evaporator inlet tube fittings. Connect the liquid line to the evaporator inlet tube. Tighten
retaining nut to 28 Nm (250 in. lbs.).
12. Evacuate the refrigerant system. See: Refrigerant/Service and Repair
13. Charge the refrigerant system. See: Refrigerant/Service and Repair
14. Install the instrument panel in the vehicle. Refer to: Body and Frame, Interior Trim, Dashboard/Instrument Panel, Service and Repair,
Instrument Panel Service Procedures, Instrument Panel Assembly Replacement, See: Body and Frame/Interior Moulding / Trim/Dashboard /
Instrument Panel/Service and Repair/Instrument Panel Assembly
15. Connect the battery negative cable.
16. Start the engine and check for proper operation of the heating and air conditioning systems.
