F 150 4WD Pickup V8-5.4L SOHC VIN 5 (2004)
Heater Core Case: Service and Repair
HEATER CORE AND EVAPORATOR CORE HOUSING, ASSEMBLY AND COMPONENTS
CAUTION: Refrigerant Compressor Oil (Mineral Oil) F73Z-19577-AA (Motorcraft YN-9-A) should be used to lubricate R-134a refrigerant
system O-ring seals only and should not be added to R-134a refrigerant systems as an A/C compressor lubricant. PAG Refrigerant Compressor
Oil F7AZ-19D589-DA (Motorcraft YN-12-C) or equivalent meeting Ford specification WSH-M1C231-B only should be used as an A/C
compressor lubricant.
NOTE:
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If an evaporator core leak is suspected, the evaporator core must be vacuum leak tested before it is removed from the vehicle.
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Failure to correctly install the evaporator core seal when installing the evaporator core will result in decreased A/C cooling efficiency due to
airflow bypassing the evaporator core.
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If a heater core leak is suspected, the heater core must be leak tested before it is removed from the vehicle.
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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.
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New O-ring seals, lubricated in clean mineral oil, must be installed before reconnecting any A/C fitting which has been disconnected.
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Lubricate the coolant hoses with plain water only if needed.
REMOVAL
1. Remove the instrument panel. Refer to: Body and Frame, Interior Trim, Fashboard/Instrument Panel, Service and Repair, Removal and
Installation, See: Body and Frame/Interior Moulding / Trim/Dashboard / Instrument Panel/Service and Repair
2. Remove the suction accumulator.