Explorer Sport Trac 4WD V6-245 4.0L SOHC VIN K SFI (2001)
Compressor Fitting HVAC: Description and Operation
The A/C manifold and tube is attached to the A/C compressor, is sealed 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 and a fitting used to mount a serviceable high-pressure A/C charge port valve.
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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 discharging the A/C system.