F 250 4WD Super Duty V8-6.4L DSL Turbo (2008)
Expansion Block/Orifice Tube: Description and Operation
A/C EVAPORATOR CORE ORIFICE
NOTE: A new A/C evaporator core orifice should be installed following A/C compressor failures that produce foreign material in the system.
The evaporator core orifice is located in the condenser-to-evaporator line and can be removed and installed through an access fitting. The evaporator
core orifice provides a restriction to the flow of refrigerant from the high-pressure side of the refrigerant system, and separates the low-pressure and
high-pressure sides of the refrigerant system.
