FORD MUSTANG 2003 Workshop Manual

Klj . 3 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_2308/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Evaporator Core Housing
Removal
NOTE:
The evaporator core is not separately serviceable, it is serviced only with the evaporator core
housing assembly.
1. Disconnect the battery ground cable.
2. Recover the refrigerant. For additional information, refer to Section 412 - 00 .
3. Drain the cooling system. For additional information, refer to Section 303 - 03A or
Section 303 -
03B .
4. Remove the instrument panel. For additional information, refer to Section 501 - 12 .
5. Disconnect the heater hose couplings from the heater core. For additional information, refer to Section 412 - 00 .
6. Disconnect the vacuum connector. SECTION 412-
02: Heating and Ventilation 2003 Mustang Workshop Manual Material
Item Specification
PAG Compressor Oil (R-134a
Systems)
F7AZ- 19589- DA (Motorcraft
YN- 12-C) WSH-
M1C231-
B MERPOL®
NA ESE-
M99B144-
B Klj . 1 ba
42003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_2308/S3B~us~en~ ...

7. Remove the suction accumulator/drier. For additional information, refer to
Section 412 - 03 .
8. Disconnect the A/C liquid line. zDiscard the O- ring seals.
9. Remove the evaporator core housing nuts.
10. Remove the nut.
11. Remove the screw. Klj . 2 ba
42003 Mustang Workshop Manual
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12. Remove the interior evaporator core housing bolts.
13. Remove the evaporator core housing.
Installation 1. To install, reverse the removal procedure. zLubricate the coolant hoses with coolant hose lubricant or plain water only, if needed.
z Install new O- ring seals lubricated with PAG oil. Klj . 3 ba
42003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_2308/S3B~us~en~ ...

Klj . 4 ba
42003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_2308/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Heater Core
Removal
NOTE:
If a heater core leak is suspected, the heater core must be pressure leak tested before it is
removed from the vehicle. For additional information, refer to Section 412 - 00 .
1. Remove the evaporator core housing. For additional information, refer to Evaporator Core Housing in this section.
2. Remove the foam weather seal.
3. Remove the screws and remove the heater core cover.
4. Remove the heater core.
Installation 1. NOTE: Be sure to install a new oval foam weather seal around the heater core inlet and outlet
tubes.
To install, reverse the removal procedure.
SECTION 412-
02: Heating and Ventilation 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

Klj . 2 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

DISASSEMBLY AND ASSEMBLY
Evaporator Core Housing
Disassembly
1. Remove the evaporator core housing. For additional information, refer to Evaporator Core Housing in this section.
2. Remove the foam weather seal.
3. Remove the screws and remove the heater core.
4. Remove the screws and remove the A/C recirculating air duct.
5. Remove the vacuum reservoir. 1. Disconnect the vacuum line.
2. Remove the screw.
SECTION 412-
02: Heating and Ventilation 2003 Mustang Workshop Manual Klj . 1 ba
42003 Mustang Workshop Manual
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6. Remove the heater air damper door motor.
1. Disconnect the vacuum lines.
2. Loosen the nuts and unclip the motor.
7. Release the vacuum harness from the housing.
8. Remove the screws and remove the resistor.
9. Disconnect the jumper wire. Klj . 2 ba
42003 Mustang Workshop Manual
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10. Disconnect the main harness.
11. Remove the screws.
12. Remove the blower motor.
13. Remove the screws and remove the duct.
14. Remove the mounting brackets. Klj . 3 ba
42003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...