F 150 Heritage 4WD Pickup V8-5.4L SOHC VIN Z Bi-fuel (2004)
Hose/Line HVAC: Description and Operation
REFRIGERANT LINES
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.
The condenser to evaporator tube contains high pressure liquid refrigerant upstream of the A/C evaporator core orifice.
The A/C manifold and tube is attached to the A/C compressor, is sealed with the O-ring seals and has the following features:
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The upstream side contains low pressure refrigerant gas.
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The downstream side contains high pressure refrigerant gas.
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An integral non-serviceable muffler and a serviceable high pressure A/C charge port valve are located on the downstream side.
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The downstream side also contains a fitting used to mount the A/C pressure cutoff switch. A long-travel Schrader-type valve stem core is installed
in the fitting so that the A/C pressure cutoff switch can be removed without recovering the refrigerant.
