Expedition 4WD V8-4.6L SOHC VIN W (1999)
Hose/Line HVAC: Description and Operation
NOTE: Installation of a new suction accumulator/drier 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/drier.
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 with 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 cut-off switch. A long-travel Schrader-type valve stem core is installed
in the fitting so that the A/C pressure cut-off switch can be removed without recovering the A/C system.
