SPECIFICATION ITEM
| Item | Specification |
|---|---|
| Magnetic Clutch | |
| Air gap between pulley and clutch plate | 0.35-0.75 mm (0.014--0.030 in) |
| Lubricant | |
| PAG Refrigerant Compressor Oil (R-134a Systems) F7AZ-19589-DA (Motorcraft YN-12-C) | WSH-M1C231-B |
| Thermal Limiter Sealant | |
| Silicone Gasket and Sealant F7AZ-19554-EA (Motorcraft TA-30) | WSE-M4G323-A4 |
SPECIFICATION ITEM
TORQUE SPECIFICATIONS
| Description | Nm |
|---|---|
| Low-pressure service gauge port valve cap | 0.8 |
| High-pressure service gauge port valve cap | 0.8 |
| Low-pressure Schrader-type valve | 1.8 |
| High-pressure Schrader-type valve | 2.5 |
| Compressor nuts | 25 |
| Compressor studs | 9 |
| Compressor bolts | 25 |
| Compressor manifold bolt | 21 |
| A/C compressor clutch disc and hub nut | 26 |
| Heater core and evaporator core housing bolts | 9 |
| Condenser mounting studs | 6 |
| A/C (peanut) fitting nuts | 8 |
| Receiver/drier bracket bolts | 9 |
| Roll restrictor cross beam bolts | 55 |
| Roll restrictor bracket bolt | 48 |
| Coolant reservoir bolts | 9 |
| Thermostatic expansion valve (TXV) manifold and tube bracket bolt | 8 |
| TXV manifold bolt | 8 |
| TXV bolts | 8 |
TORQUE SPECIFICATIONS
The system components include the following
- A/C compressor
- A/C clutch assembly
- A/C condenser core
- A/C evaporator core
- Receiver/drier
- Connecting refrigerant lines
- Thermostatic expansion valve
The refrigerant system incorporates an A/C compressor controlled by the powertrain control module (PCM) through an A/C clutch relay. The climate control assembly sends an A/C request signal to the instrument cluster module which relays the request to the PCM. An evaporator discharge air temperature sensor is used to disengage the A/C compressor clutch when the evaporator core temperature falls below 4°C (39°F).
The A/C compressor clutch will only be engaged by the PCM if all of the following conditions are met
- The climate control assembly is set to a mode which provides an A/C request to the PCM via the instrument cluster module (ICM).
- The evaporator discharge air temperature sensor is reading a temperature above 4°C (39°F).
- The A/C pressure transducer is not reading a pressure above 2841 kpa (412 PSI) in the high side of the refrigerant system.
- The A/C compressor relay is switched to the CLOSED position by the PCM.
- The engine coolant temperature is not excessively high.
- The PCM has not detected a wide open throttle (WOT) condition.
An A/C pressure relief valve is installed in the A/C manifold and tube to protect the refrigerant system against excessively high refrigerant pressures.
Refrigerant flow into the evaporator core is metered by a thermostatic expansion valve (TXV).