REMOVAL & INSTALLATION
- Disconnect the negative battery cable. Recover refrigerant (discharge system) from refrigeration system at a qualified facility.
- Remove the cooling unit (See Cooling Unit).
- Place the cooling unit on a work bench and remove control amplifier, relay assemblies or power transistor assembly if so equipped.
- Using suitable tools, remove the upper cooling unit case clamps and retaining screws. Remove thermistor with thermistor holder.
- Remove the lower cooling unit case from the evaporator. Remove the evaporator from the cooling unit.
- Remove the heat insulator (heat sensing tube) and the clamp from the outlet tube. Disconnect the liquid line from the inlet fitting of the expansion valve.
- Disconnect the expansion valve from the inlet fitting of the evaporator. Remove the expansion valve.
- Connect the expansion valve to the inlet fitting of the evaporator and torque it to 17 ft. lbs. (23 Nm) on 1986-89 models. On 1990-93 models, connect the expansion valve, liquid and suction tube to evaporator torque the bolt to 48 inch lbs. (5.4 Nm). Be sure the O-ring is positioned on the tube fitting.
- On 1986-89 models, connect the liquid line tube to the inlet fitting on the expansion valve. Torque the nut to 10 ft. lbs. (13 Nm).
- Install the clamp and heat insulator (heat sensing tube) to the outlet tube.
- Install the upper and lower cases on the evaporator. Install the thermistor. Install control amplifier, relay assemblies or power transistor assembly, if equipped.
- Install the air conditioning wiring harness to the cooling unit and all other necessary components.
- Install the cooling unit assembly in the vehicle. Be careful not to pinch the wiring harness while installing the cooling unit.
- Connect the negative battery cable.
- Evacuate, add oil to, charge and test the refrigeration system at an approved facility.