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Air Conditioning System: Specifications Ford Expedition II

A/c Compressor ~267 words

General Specification

ItemSpecification
Magnetic Clutch
Air gap clearance0.35-0.75 mm (0.014-0.030 in)
Lubricant
PAG Refrigerant Compressor Oil (R-134a Systems) F7AZ-19589-DA (Motorcraft YN-12-C)WSH-M1C231-B

General Specifications Chart

Torque Specifications

DescriptionNm
Compressor manifold and tube bolt20
A/C Compressor mounting bolt/studs25
PCM bracket bolts10
Evaporator outlet line fitting at TXV32
Evaporator inlet line fitting at TXV24
TXV manifold and tube bolt21
Air conditioning (peanut) fittings8
Radiator bracket bolts12
Condenser bracket bolts9
TXV bracket bolts9
Receiver/drier bracket nuts12

TORQUE SPECIFICATIONS

The air conditioning system components are.

  1. A/C compressor (19703).
  2. A/C condenser core (19712).
  3. A/C evaporator core.
  4. Receiver/drier (19959).
  5. Connecting refrigerant lines.
  6. Thermostatic expansion valve (19849).
  7. A/C thermostatic switch.
  8. A/C high pressure cutoff switch (19D594).
  9. A/C compressor pressure relief valve (19D644).
  10. Low charge protection switch

The refrigerant system incorporates an A/C compressor controlled by the powertrain control module (PCM) through an A/C clutch relay.

The A/C compressor clutch will only be engaged by the PCM if all of the following conditions are met

  1. The climate control assembly is set to a mode which provides an A/C request to the PCM.
  2. The A/C thermostatic switch is reading a temperature above 37°F.
  3. The high pressure cutoff switch is not open due to excessive pressure in the high side of the refrigerant system.
  4. The low charge protection switch is not open due to insufficient low side refrigerant system pressure.
  5. The A/C compressor relay is switched to the closed position by the PCM.
  6. The engine coolant temperature is not excessively high.
  7. The PCM has not detected a wide open throttle (WOT) condition.

For additional information concerning operating specifications, refer to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .

An A/C compressor pressure relief valve is installed in the compressor manifold and tube assembly (19D734) to protect the refrigerant system against excessively high refrigerant pressures.

Refrigerant flow into the evaporator core is metered by a thermostatic expansion valve.

For additional information concerning the refrigerant cycle and principles of A/C operation, refer to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .

See also:
• JACKING & LIFTING

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