HVAC System - Heating & Ventilation Ford Cutaway E350

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

Heating and Defrosting

The heating and defrosting system has the following features

1. Controls the temperature and, during A/C operation (if equipped), reduces the relative humidity of the air inside the vehicle.
2. Delivers heated or cooled air (if equipped with A/C) to maintain the vehicle interior temperature and comfort level.
3. Controls the blower motor speed.
4. Cooling or heating can be adjusted to maintain the desired temperature.
5. System uses a reheat method (if equipped with A/C) to provide conditioned air to the passenger compartment.
6. The blower motor (19805) draws outside air through the air inlet duct from just below the windshield during all system operations except for OFF and MAX A/C, if equipped (when recirculated air is used).
7. All airflow from the blower motor passes through the A/C evaporator core (19860), if equipped.
8. The temperature is then regulated by reheating a portion of the air and blending it with the remaining cool air to the desired temperature.
9. The temperature blending is varied by the air temperature control door, which regulates the amount of air that flows through and around the heater core (18476), where it is then mixed and distributed.

Scheme 1

Heater Core

The heater core consists of fins and tubes arranged to extract heat from the engine coolant and transfer it to air passing through the heater core.

Blower Motor

The blower motor pulls air from the air inlet and forces it into the plenum assembly where it is mixed and distributed. The blower motor has four speeds and is controlled by the blower motor switch and resistor.

Refer to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .

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1. Disconnect the battery. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/cutaway-e350/2004-2007/remont/charging-system/#battery-mounting-and-cables) .
2. Remove the battery (10655).
3. Remove the battery tray. Remove the screws. Remove the battery tray.
4. Move the junction block assembly. Remove the three screws.
5. Move the suction accumulator (19C836). Remove the three screws. Move the suction accumulator.
6. Remove the blower motor (19805). Disconnect the blower motor electrical connector. Remove the blower motor housing tube (19A786). Remove four screws. Remove the retaining clip. Remove the blower motor.
7. Remove the blower motor wheel. Remove the retaining clip. Remove the blower motor wheel.
8. To install, reverse the removal procedure.

Scheme 7

1. Remove the heater core. For additional information, refer to «HEATER CORE»(/ford/cutaway-e350/2004-2007/remont/heater/#hvac-system-heating-ventilation__heater-core) .
2. Remove the nuts and the heater core housing. Disconnect the temperature blend door actuator electrical connector.
3. To install, reverse the removal procedure.

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1. Remove the heater core housing. For additional information, refer to «AUXILIARY HEATER CORE HOUSING»(/ford/cutaway-e350/2004-2007/remont/heater/#hvac-system-heating-ventilation) .
2. Remove the evaporator core. For additional information, refer to «AIR CONDITIONING»(/ford/cutaway-e350/2004-2007/remont/manual-hvac-system/#hvac-system-air-conditioning) .
3. Detach the wire harness. Remove the nut and stud. Disconnect the electrical connector. Disconnect the electrical connector and position the wire harness aside.
4. Remove the suction accumulator. Remove the nuts. Remove the suction accumulator.
5. Remove the washer reservoir. Remove the nut. Remove the bolt. Remove the washer reservoir. Disconnect the washer hose and washer pump electrical connector.
6. Disconnect the blower motor electrical connector.
7. Disconnect the blower motor resistor electrical connector.
8. Disconnect the vacuum connector and detach the wire harness pin-type retainer.
9. Remove the screws and position the wire harness aside.
10. Position the auxiliary A/C lines aside (if equipped). Remove the bolt. Position the auxiliary A/C lines aside.
11. Working from inside the vehicle, remove the three nuts.
12. Position the evaporator core housing forward and remove the two fresh air inlet duct screws.
13. Remove the fresh air inlet duct. Remove the screw. Remove the fresh air inlet duct. Detach the vacuum line retainer.
14. Deflect the LH battery tray bracket (4.6L, 5.4L or 6.8L) or the LH junction box bracket (6.0L Diesel) to provide clearance for evaporator core housing removal.
15. Remove the evaporator core housing.
16. To install, reverse the removal procedure.

Removal and Installation

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 CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .

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1. Drain the engine cooling system. For additional information, refer to «ENGINE COOLING»(/ford/cutaway-e350/2004-2007/remont/cooling-system-mechanical/#engine-cooling) .
2. Disconnect the heater hoses at the heater core.
3. Remove the instrument panel finish panel.
4. Remove the bolts and the instrument panel reinforcement.
5. Remove the bolts and the instrument panel reinforcement bracket.
6. Remove the screws and position the wire harness aside.
7. Remove the screws and the heater core cover.
8. Remove the heater core.
9. To install, reverse the removal procedure. Clean and lubricate the coolant hoses with plain water only, if needed.
10. Fill the engine cooling system. For additional information, refer to «ENGINE COOLING»(/ford/cutaway-e350/2004-2007/remont/cooling-system-mechanical/#engine-cooling) .

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1. Remove the seal.
2. Remove the seals.
3. Drain the heater core.
4. Remove the temperature blend door actuator motor (19E616). Remove the screws. Remove the temperature blend door actuator motor.
5. To assemble, reverse the disassembly procedure.

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1. Remove the evaporator core housing. For additional information, refer to «EVAPORATOR CORE HOUSING»(/ford/cutaway-e350/2004-2007/remont/heater/#hvac-system-heating-ventilation) .
2. Remove the blower motor (19805). Remove the blower motor housing tube (19A786). Remove the four screws. Remove the retaining clip. Remove the blower motor.
3. Remove the heater blower motor switch resistor (18591). Remove the two screws. Remove the heater blower motor switch resistor.
4. To assemble, reverse the disassembly procedure.

See also:
• CLIMATE CONTROL SYSTEM-GENERAL INFORMATION
• BATTERY, MOUNTING AND CABLES
• AIR CONDITIONING
• ENGINE COOLING
• HEATER CORE
• AUXILIARY HEATER CORE HOUSING