E 150 V8-4.6L SOHC VIN W (2004)
Expansion Block/Orifice Tube: Description and Operation
EVAPORATOR CORE ORIFICE
NOTE: A new evaporator core orifice should be installed whenever a new A/C compressor is installed.
The evaporator core orifice has the following characteristics:
-
It is located in the evaporator core inlet tube.
-
It has filter screens located on the inlet and outlet ends of the tube body.
-
The inlet filter screen acts as a strainer for the liquid refrigerant flowing through the A/C evaporator core orifice.
-
O-ring seals on the evaporator core orifice prevent the high-pressure liquid refrigerant from bypassing the evaporator core orifice.
-
Adjustment or service cannot be made to the evaporator core orifice assembly, a new evaporator core orifice assembly must be installed as a unit.
