Where is AC orifice tube located?
A fixed orifice tube contains a small brass tube encased in a plastic case with a filter at each end to protect it from any debris in the system. It’s located on the high side between the condenser and the evaporator core.
What is AC orifice tube?
Orifice tubes for car air conditioning system The orifice tube is a tube with a given length and cross-section which expands the refrigerant but, unlike the expansion valve, it is unable to regulate flow rate and superheating. The orifice tube is always associated with an accumulator at the evaporator outlet.
What happens if there is no orifice tube?
Faulty orifice tubes can also result in too little refrigerant flow through the evaporator. If this is the case, the flow of refrigerant will not be enough to absorb the heat that is coming from the condenser. When this occurs, the A/C simply will not be performing well enough to allow the system to cool.
Where is the orifice tube in an AC system?
It is usually installed at the evaporator inlet and works together with the orifice tube to regulate the flow of refrigerant through the vehicle’s AC system. Too much refrigerant flow and the evaporator core will freeze over; too little and the evaporator core will overheat and compromise the efficiency of the AC system.
How do you replace the orifice tube in a car?
Replacing the orifice tube requires you to completely evacuate the AC system and disconnect the high pressure liquid line. It’s not a fun job. • Replacement orifice of the exact same color and part number as the old unit Buy or rent a refrigerant recovery machine. Attach the manifold gauge set to the high and low side ports on your car’s AC system
Where is the orifice tube located in Ricks free auto?
Lubricate the O-rings on the new orifice tube with AC oil. Insert the new orifice tube into the evaporator or LLOT or SLOT. Reconnect the liquid line to the evaporator or condenser and follow factory specs for tightening (if required).
How do you remove the orifice tube in an evaporator?
Remove the orifice tube using needle nose pliers or removal tool. Note the orientation of the orifice tube. It must go back in the same way. Lubricate the O-rings on the new orifice tube with AC oil. Insert the new orifice tube into the evaporator or LLOT or SLOT.