Ford 2003 Mustang - Page 3

The A/C condenser core has the following characteristics:
 It is an aluminum fin and tube design heat exchanger located in front of the vehicle radiator (8005).
 It cools compressed refrigerant gas by allowing air to pass over fins and tubes to extract heat and by condensing gas to liquid refrigerant as it is cooled.
Refrigerant Lines
The condenser to evaporator tube (19835) contains the high pressure liquid refrigerant upstream of the evaporator core orifice.
The A/C manifold and tube (19D734) is attached to the A/C compressor, is sealed with O-ring seals, and has the following features:
 The upstream side contains low pressure refrigerant gas.
 The downstream side contains high pressure refrigerant gas and a fitting used to mount a serviceable high pressure A/C charge port valve.
 The downstream side also contains a fitting used to mount the refrigerant containment switch (3.8L) or dual-function pressure switch (4.6L). A long-travel
Schrader-type valve stem core is installed in the fitting so that the switch can be removed without discharging the A/C system.
A/C Evaporator Core
NOTE: The evaporator core is not separately serviceable, it is serviced only with the evaporator core housing assembly.
NOTE: Installation of a new suction accumulator is not required when repairing the air conditioning system except when there is physical evidence of contamination
from a failed A/C compressor or damage to the suction accumulator.
The A/C evaporator core is the plate/fin type with a unique refrigerant flow path.
 A mixture of refrigerant and oil enters the bottom of the A/C evaporator core through the A/C evaporator core inlet tube and moves out of the A/C evaporator
core through the A/C evaporator core outlet tube.
 This flow pattern accelerates the flow of refrigerant and oil through the A/C evaporator core.
Evaporator Core Orifice
NOTE: The evaporator core orifice is an integral part of the condenser to evaporator line and should be installed as an assembly with the line.
NOTE: A new evaporator core orifice should be installed whenever a new A/C compressor is installed.
The evaporator core orifice has the following characteristics:
 It is located in the A/C condenser to evaporator line.
 It has filter screens located on the inlet and outlet ends of the tube body.
 The inlet filter screen acts as a strainer for the liquid refrigerant flowing through the evaporator core orifice.
 O-ring seals on the evaporator core orifice prevent the high-pressure liquid refrigerant from bypassing the evaporator core orifice.
 Adjustment or repair cannot be made to the evaporator core orifice assembly. A new evaporator core orifice must be installed as a unit.
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2003 Mustang Workshop Manual
4/29/2009
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS3B/~MUS~LEN/19/S
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