Auto A/C
Heater/Air Distributor Case AssemblyRemoval Procedure
1. Disconnect the negative battery cable.
2. Remove the instrument panel carrier assembly. Refer to Instrumentation/Driver Information.
3. Drain the cooling system. Refer to Engine Cooling.
4. Recover the refrigerant. Refer to Manual Control Heating, Ventilation, and Air Conditioning System.
5. Remove the retaining nuts that secure the suction hose and the liquid evaporator pipe blocks at the fire wall.
6. Loosen the clamp bolts from the suction hose and the liquid evaporator pipe to allow movement of the hose and the pipe.
7. Remove the evaporator drain hose.
8. Compress the heater hose clamps at the fire wall and slide the clamps toward the engine.
9. Remove the two heater hoses from the core lines at the fire wall.
10. Remove the screws that secure the heater/air distributor case assembly to the fire wall on either side of the heater hoses.
11. Remove the heater/air distributor case screw, that is located adjacent to the fuel filter, from the engine compartment side of the fire wall.
12. Have an assistant support the heater/air distributor case from inside the vehicle.
13. Remove the heater/air distributor case screws from the evaporator flange on the engine compartment side of the fire wall. The heater/air distributor case assembly will start to drop.
14. Pull the case straight away from the fire wall.
15. Remove the heater/air distributor case assembly from the vehicle.
Installation Procedure
1. Position the heater/air distributor case assembly in the vehicle.
NOTE: To avoid damaging the heater core tubes make sure they do not contact the fire wall opening.
2. Slowly raise the heater/air distributor case assembly into position and hold it against the fire wall while the screws are installed and tightened from the engine side of the tire wall.
3. Align and install the heater/air distributor case assembly screws above the fuel filter and at the evaporator flange.
Tighten
Tighten the heater/air distributor case assembly screws to 8 N.m (71 lb-in).
4. Install the heater/air distributor case assembly screws adjacent to the heater hoses.
Tighten
Tighten the heater/air distributor case assembly screws to 8 N.m (71 lb-in).
5. Install the evaporator drain hose.
6. Install the two heater hoses.
7. Slide the heater hose clamps into position.
8. Install the instrument panel carrier assembly. Refer to Instrumentation/Driver Information.
9. Install new O-rings on the suction hose and the liquid evaporator pipe at the fire wall and put the pipes back in place.
10. Install the retaining nuts that secure the suction hose and the liquid evaporator pipe blocks at the fire wall.
Tighten
Tighten the suction hose and the liquid evaporator pipe retaining nuts to 10 N.m (89 lb-in).
11. Fill the cooling system. Refer to Cooling.
12. Recharge the A/C system. Refer to Manual Control Heating, Ventilation, and Air Conditioning System.
13. Connect the negative battery cable.