Navigator 4WD V8-5.4L DOHC VIN A (2000)
Expansion Block/Orifice Tube: Description and Operation
A/C Evaporator Core Orifice
NOTE: A new A/C evaporator core orifice should be installed whenever a new compressor is installed.
The A/C evaporator core orifice has the following characteristics:
^
It is located in the A/C 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 A/C evaporator core orifice prevent the high-pressure liquid refrigerant from bypassing the A/C evaporator core orifice.
^
Adjustment or service cannot be made to the A/C evaporator core orifice assembly. It must be installed as a unit.
