LeSabre V6-231 3.8L VIN 3 SFI (1988)
Expansion Block/Orifice Tube: Description and Operation
Expansion (Orifice) Tube
DESCRIPTION
The plastic expansion tube, with its mesh screen and orifice, is located in the evaporator inlet line midway between the condenser and evaporator, at a
dual O-ring joint. It provides a restriction to the high pressure liquid refrigerant in the liquid line, metering the flow of refrigerant to the evaporator as
a low pressure liquid.
OPERATION
The expansion tube and orifice are protected from contamination by filter screens on both inlet and outlet sides.
The tube is serviced only as a replacement assembly.
