F 150 2WD Pickup V8-4.6L SOHC VIN W (1998)
Hose/Line HVAC: Description and Operation
NOTE: Whenever a refrigerant line is replaced, it is also necessary to replace 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 the O-ring seals and has the following features:
-
The upstream side contains low pressure refrigerant gas.
-
The downstream side contains high pressure refrigerant gas.
-
An integral non serviceable muffler and a serviceable high pressure A/C charge port valve are located on the downstream side.
-
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 discharging the A/C system.