F 250 4WD Super Duty V10-6.8L VIN Z CNG (2003)
Hose/Line HVAC: Description and Operation
Main Climate Control
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 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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A serviceable high pressure A/C charge port valve is located on the downstream side.
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Contains the pressure relief 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.
