Specifications
| Description | Nm |
|---|---|
| Air conditioning (A/C) compressor clutch retaining nut | 26 |
| A/C compressor retaining bolts | 25 |
| A/C compressor manifold and tube retaining bolt | 20 |
| A/C condenser core retaining studs | 7 |
| A/C condenser core supply and return lines retaining nuts | 8 |
| Power steering oil cooler retaining nuts | 7 |
| A/C desiccant bag retaining screw | 22 |
| A/C pressure cutoff switch | 8 |
Torque Specifications
Scheme 1
| Item Number | Description |
|---|---|
| 1 | Evaporator core |
| 2 | Air conditioning (A/C) compressor |
| 3 | Pressure cutoff switch |
| 4 | Condenser core |
The air conditioning (A/C) system is a clutch cycling, thermostatic expansion valve type. The system components are
- A/C Compressor
- Compressor clutch
- Condenser core
- Evaporator core
- Thermostatic expansion valve
- Desiccant bag
- Connecting refrigerant lines
The refrigeration system operation is controlled by the
- Thermostatic expansion valve.
- Evaporator discharge temperature sensor.
- A/C Compressor relief valve.
- Pressure cut off switch.
- Engine control module (ECM)
- Climate control module
The refrigerant system incorporates a variable capacity A/C compressor. The A/C compressor clutch engagement is controlled by the ECM.
The DATC module monitors the evaporator discharge temperature sensor and communicates with the ECM to control clutch cycling. The DATC also monitors the ambient air temperature and disables A/C operation when the ambient air temperature is below 0°C (30°F).
The pressure switch is located in the A/C compressor discharge line and communicates with the ECM. If high or low refrigerant pressures are experienced , the ECM will interrupt A/C compressor operation.
The pressure relief valve is installed in the A/C compressor manifold and tube assembly and protects the system from excessively high refrigerant pressure.
The thermostatic expansion valve, which is mounted to the evaporator core supply and return lines, contains an adjustable orifice which provides the restriction that separates the high and low pressure liquid phases in the refrigerant system.
Scheme 2
| Item Number | Description |
|---|---|
| 1 | Manifold and tube assembly - thermostatic expansion valve |
| 2 | Tube assembly - condenser to thermostatic expansion valve |
| 3 | Pressure cutoff switch |
| 4 | Condenser core |
| 5 | A/C Compressor |
| 6 | Manifold and tube assembly - A/C compressor |