Heater/Air Distributor Case Assembly

Heater/Air Distributor Case Assembly

Removal Procedure




1. Disconnect the negative battery cable.
2. Recover the refrigerant. Refer to "Discharging, Adding Oil, Evacuating, and Charging Procedures for A/C System".
3. Remove the nuts securing the A/C suction hose and liquid evaporator pipe blocks at the bulkhead.




4. Loosen the A/C suction hose clamp bolt. Loosen the liquid evaporator pipe clamp bolt.
5. Loosen the A/C suction hose and liquid evaporator pipe clamps to allow tube movement.
6. Pull the A/C suction hose and liquid evaporator pipe from the evaporator inlet.
7. Remove the evaporator drain hose.
8. Remove the Heater/Air Distributor case from the vehicle. Refer to Heating and Ventilation System (Without Air Conditioning).

Installation Procedure




1. Install two new O-rings onto the A/C suction hose and the liquid evaporator pipe at the bulkhead in the engine compartment.
2. Install the heater/air distribution case into the vehicle. Refer to Heating and Ventilation System (Without Air Conditioning).

IMPORTANT: Do not try to verify the operation of the system until the A/C system has been installed and recharged.

3. Install the A/C suction hose and liquid evaporator pipes onto the evaporator flange connecting block studs.
4. Secure the liquid evaporator pipe to the evaporator flange with the nut.

Tighten
Tighten the suction hose connecting block retaining nut to 10 N.m (89 lb-in).




5. Install the suction hose and liquid evaporator pipe clamps and clamp bolts.

Tighten
Tighten the A/C suction hose clamp bolt to 10 N.m (89 lb-in).
Tighten the liquid evaporator pipe clamp bolt to 4 N.m (35 lb-in).

6. Install the evaporator drain hose.
7. Evacuate and recharge the A/C system. Refer to "Discharging, Adding Oil, Evacuating, and Charging Procedures for A/C System".
8. Operate the HVAC control to verify the proper function of the heating and cooling systems.