Auto A/C
Heater/Air Distributor Case AssemblyRemoval Procedure
1. Disconnect the negative battery cable.
2. Remove the instrument panel carrier assembly.
3. Drain the cooling system.
4. Recover the refrigerant.
5. Remove the retaining nuts that secure the suction hose and the liquid evaporator pipe blocks at the bulkhead.
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 bulkhead and slide the clamps toward the engine.
9. Remove the two heater hoses from the core lines at the bulkhead.
10. Remove the screws that secure the heater/air distributor case assembly to the bulkhead on either side of the heater hoses.
11. Remove the heater/air distributor case screw, that is located above the fuel filter, from the engine compartment side of the bulkhead.
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 bulkhead. The heater/air distributor case assembly will start to drop.
14. Pull the case straight away from the bulkhead.
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 bulkhead opening
2. Slowly raise the heater/air distributor case assembly into position and hold it against the bulkhead while the screws are installed and tightened from the engine side of the bulkhead.
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.
9. Install new O-rings on the suction hose and the liquid evaporator pipe at the bulkhead 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 bulkhead.
Tighten
Tighten the suction hose retaining nuts and the liquid evaporator pipe retaining nuts to 10 N.m (89 lb-in).
11. Fill the cooling system.
12. Recharge the A/C system.
13. Connect the negative battery cable.