RAM 2500 Truck 4WD V10-8.0L VIN W (1997)
Expansion Block/Orifice Tube: Description and Operation
FIXED ORIFICE TUBE
The fixed orifice tube is located in the outlet line of the condenser. It is accessed by disconnecting the refrigerant line coupler at the condenser outlet
line.
The inlet and outlet ends of the tube have a screen to filter the refrigerant. O-rings on the tube body prevent the refrigerant from bypassing the fixed
orifice. The fixed orifice tube is used to meter the flow of liquid refrigerant into the evaporator coil.
The fixed orifice tube cannot be repaired and, if faulty or damaged, it must be replaced.
