A/C System - Manual

Component Locations:

AIR CONDITIONING - MANUAL
These vehicles offer the R134a A/C system. The R-134a system uses a hydrofluorocarbon (HFC) (non-CFC) based refrigerant. R-134a requires the use of Motorcraft YN-12-B refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B. Do not use R-12 tools and equipment when servicing a R134a system unless otherwise specified in the service publication. Never mix R-12 with R-134a refrigerants. They are non-compatible.

The manual A/C system is a multi-piece, single case design, with an integral blower motor. This allows the operator to control the temperature by delivering heated or cooled air to maintain a constant vehicle comfort level. In addition, during A/C operation it reduces the relative humidity of the air inside the vehicle. Controls are provided to adjust the temperature and system functions, including blower motor speeds for desired airflow. Outside air is drawn from the air inlet cowl just below the windshield during all system operations except for MAX A/C cooling (when recirculated air is used) and OFF. Manual temperature control can be maintained in all control settings except when the system is turned OFF.

COMPRESSOR - A/C
The FS-10 A/C Compressor is used on all these vehicles.

CONDENSER CORE - A/C
The A/C condenser core is located in front of the radiator. The A/C condenser core consists of an arrangement of fins and tubes to cool compressed and heated R-134a from the A/C compressor.

ORIFICE - A/C EVAPORATOR CORE
The A/C evaporator core orifice is a restriction between the high and low pressure refrigerant and meters the flow of the liquid refrigerant into the evaporator core.

EVAPORATOR CORE
The A/C evaporator core is a multi-pass plate/fin aluminum core.

ACCUMULATOR/DRIER - SUCTION
The suction accumulator/drier is used to prevent heavier oil-laden liquid refrigerant from directly entering the evaporator core by diverting the refrigerant to the evaporator-to-compressor suction line at a controlled rate.

The suction accumulator/drier also contains a dessicant bag to absorb any moisture that may be in the system.

VALVES - SERVICE GAUGE PORT
The service gauge port valves are quick-connect fittings located in the A/C compressor to condenser discharge line (high pressure side) and in the suction accumulator/drier (low pressure side).