air condition FORD MUSTANG 2003 Workshop Manual

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.
zA 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.
z 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:
zIt is located in the A/C condenser to evaporator line.
z It has filter screens located on the inlet and outlet ends of the tube body.
z The inlet filter screen acts as a strainer for the liquid refrigerant flowing through the evaporator
core orifice.
z O-ring seals on the evaporator core orifice prevent the high- pressure liquid refrigerant from
bypassing the evaporator core orifice. Klj . 5 ba
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z
Adjustment or repair cannot be made to the evaporator core orifice assembly. A new evaporator
core orifice must be installed as a unit.
Suction Accumulator
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.
In addition to the preceding condition, a new suction accumulator should be installed if one of the
following conditions exist:
zThe suction accumulator is perforated.
z The refrigerant system has been opened to the atmosphere for a period of time longer than
required to make a minor repair.
z There is evidence of moisture in the system such as internal corrosion of metal refrigerant lines
or the refrigerant oil is thick and dark. Item Part Number Description
1 19E561 A/C cycling switch
2 — O-
ring seal (part of 19C836) 3 19D701 Low pressure service gauge port valve
4 — Inlet from A/C evaporator core (part of 19C836)
5 — Outlet to A/C compressor (part of 19C836)
6 — Anti-
siphon hole (part of 19C836) 7 — Desiccant bag (part of 19C836)
8 — Oil return orifice filter (part of 19C836)
9 — Vapor return tube (part of 19C836)
10 — Suction accumulator dome (part of 19C836) Klj . 6 ba
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DIAGNOSIS AND TESTING
Air Conditioning
Refer to
Section 412 - 00 .
SECTION 412-
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REMOVAL AND INSTALLATION
Air Conditioning (A/C) Compressor —
3.8L
Removal and Installation CAUTION: If installing a new air conditioning compressor due to an internal failure of the
old unit, you must carry out the following procedures to remove contamination from the air
conditioning system.
zIf A/C flushing equipment is available, carry out the flushing of the air conditioning
system prior to installing a new air conditioning compressor. For additional information,
refer to Section 412 - 00 .
z If A/C flushing equipment is not available, carry out filtering of the air conditioning
system after a new air conditioning compressor has been installed. For additional
information, refer to Section 412 - 00 .
z Install a new evaporator core orifice (19D990), as directed by the A/C flushing or filtering
procedure.
z Install a new suction accumulator (19C836), as directed by the A/C flushing or filtering
procedure.
NOTE: Installation of a new suction accumulator is not required when repairing the air conditioning
system except when there is physical evidence of system contamination from a failed A/C compressor
or damage to the suction accumulator.
1. If flushing of the air conditioning system has not been performed, recover the refrigerant. For additional information, refer to Section 412 - 00 .
2. Disconnect the battery. For additional information, refer to Section 414 - 01
3. Unlatch the air breather.
SECTION 412-
03: Air Conditioning 2003 Mustang Workshop Manual Material
Item Specification
PAG Refrigerant Compressor
Oil (R-
134a Systems)
F7AZ- 19589- DA (Motorcraft YN-
12- C) WSH-
M1C231-
B Klj . 1 ba
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9. Remove the bolts and the A/C compressor.
10. To install, reverse the removal procedure. zInstall new O- ring seals lubricated in clean PAG oil.
z If filtering of the refrigerant system is not to be performed, lubricate the refrigerant system
with the correct amount of clean PAG oil. For additional information, refer to Section 412 -
00 .
11. If filtering of the air conditioning system is not to be performed, evacuate, leak test and charge the refrigerant system. For additional information, refer to Section 412 - 00 . Klj . 3 ba
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REMOVAL AND INSTALLATION
Air Conditioning (A/C) Compressor —
4.6L
Removal and Installation CAUTION: If installing a new air conditioning compressor due to an internal failure of the
old unit, you must carry out the following procedures to remove contamination from the air
conditioning system.
zIf A/C flushing equipment is available, carry out the flushing of the air conditioning
system prior to installing a new air conditioning compressor. For additional information,
refer to Section 412 - 00 .
z If A/C flushing equipment is not available, carry out filtering of the air conditioning
system after a new air conditioning compressor has been installed. For additional
information, refer to Section 412 - 00 .
z Install a new evaporator core orifice (19D990), as directed by the A/C flushing or filtering
procedure.
z Install a new suction accumulator (19C836), as directed by the A/C flushing or filtering
procedure.
NOTE: Installation of a new suction accumulator is not required when repairing the air conditioning
system except when there is physical evidence of system contamination from a failed A/C compressor
or damage to the suction accumulator.
1. If flushing of the air conditioning system has not been performed, recover the refrigerant. For additional information, refer to Section 412 - 00 .
2. Remove the drive belt from the A/C compressor pulley.
3. Raise the vehicle. For additional information, refer to Section 100 - 02 .
4. Disconnect the A/C compressor electrical connector. SECTION 412-
03: Air Conditioning 2003 Mustang Workshop Manual Material
Item Specification
PAG Refrigerant Compressor
Oil (R-
134a Systems)
F7AZ- 19589- DA (Motorcraft YN-
12- C) WSH-
M1C231-
B Klj . 1 ba
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REMOVAL AND INSTALLATION
Air Conditioning (A/C) Compressor Bracket —
3.8L
Removal and Installation 1. Remove the A/C compressor (19703). For additional information, refer to Air Conditioning (A/C) Compressor — 3.8L in this section.
2. Remove the three bolts and one nut.
3. Remove the A/C compressor mounting bracket.
4. To install, reverse the removal procedure.
SECTION 412-
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REMOVAL AND INSTALLATION
Clutch And Clutch Field Coil
Removal
SECTION 412-
03: Air Conditioning 2003 Mustang Workshop Manual Special Tool(s)
2-
Jaw Puller
205- D026 (D80L-1002- L) or
equivalent Installer, A/C Compressor Coil
412-
065 (T89P-19623- EH) Holding Fixture, Compressor
Clutch (3.8L vehicles)
412-
098 (T94P-19703- AH) Holding Fixture, Compressor
Clutch (4.6L vehicles)
412-
103 (T95L-19703- AH) Remover, Differential Bearing
205-
116 (T77F-4220- B1) Installer, A/C Compressor Field
Coil
412-
078 (T91L-19623- CH) Remover, A/C Compressor
Field Coil
412-
067 (T89P-19623- FH) Klj . 1 ba
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1. Remove the A/C compressor (19703). For additional information, refer to
Air Conditioning (A/C) Compressor — 3.8L or
Air Conditioning (A/C) Compressor — 4.6L in this section.
2. Remove the bolt. 1. Hold the A/C disc and hub assembly (19D786) with the special tool.
2. Remove the bolt.
3. Remove the A/C disc and hub assembly and the A/C clutch hub spacer (19D648). 1. Thread an 8 x 1.25 mm bolt into the A/C clutch to force it from the compressor shaft.
2. Lift the A/C disc and hub assembly and the A/C clutch hub spacer from the compressor shaft.
4. Remove the pulley snap ring.
5. Remove the A/C clutch pulley (2E884). Klj . 2 ba
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7. Using the special tool, install the A/C disc and hub assembly retaining bolt.
8. Measure and adjust the clutch air gap by removing or adding A/C clutch hub spacers.
9. Install the A/C compressor. For additional information, refer to
Air Conditioning (A/C) Compressor — 3.8L or
Air Conditioning (A/C) Compressor — 4.6L in this section. Klj . 5 ba
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