Where is the AC orifice tube located?

Where is the AC orifice tube located?

One of the many parts that can fail within your vehicle’s air conditioning, is the orifice tube. This tube is also known as the expansion tube, and is located within the tube between the condenser and the evaporator. It has 1 side that is a little smaller than the other, to supply more pressure.

How do I know if my AC orifice tube is clogged?

Symptoms of a Bad or Failing Expansion Valve (Orifice Tube)

1. AC system performing worse than usual and blowing warm air. One of the first symptoms of a problem with the AC expansion valve or orifice tube is an underperforming AC system.
2. Frost on AC evaporator or coming from the vents.
3. AC compressor constantly running.

Does a 2014 Silverado have a orifice tube?

Chevy Silverado 2014, A/C Orifice Tube by UAC®. 0.072″. Finish: Dark Gray. Expansion devices control the flow of refrigerant in an A/C system, and are a crucial replacement part for every A/C job.

How do you change an AC orifice tube?

Here are some steps to replace the orifice tube in your vehicle.

1. Step 1: Become Familiar with AC Unit.
2. Step 2: Locate Orifice Tube.
3. Step 3: Disconnect Tube from Orifice Tube.
4. Step 4: Remove Seal from Line.
5. Step 5: Remove Orifice Tube.
6. Step 6: Install New Orifice Tube.
7. Step 7: Install Seal.
8. Step 8: Charge the System.

Can you clean an orifice tube?

We know of technicians who often remove the liquid line and back flush through it. In theory, back flushing the liquid line will clean the orifice tube. This is said to work in most cases; though replacing the liquid line is the preferred method. Remember, a dirty orifice tube can starve a compressor of oil.

What causes a clogged orifice tube?

A clogged orifice tube is typically caused by compressor failure. When this happens, little pieces of metal and aluminum shrapnel will be found in the tube’s screen filter. If the filter’s filled with white or brownish debris, the desiccant bag in the accumulator has broken, sending desiccant throughout the system.

Where is the orifice located?

Because of the way an orifice tube works, it’s usually located on the inlet to the evaporator coil. However, on some vehicles the orifice tube location varies. Sometimes it is built into the liquid or high pressure line or inserted into the high pressure line right where the line connects to the condenser.

Where is the orifice tube located on an auto?

Auto AC orifice tube locations Because of the way an orifice tube works, it’s usually located on the inlet to the evaporator coil. However, on some vehicles the orifice tube location varies. Sometimes it is built into the liquid or high pressure line or inserted into the high pressure line right where the line connects to the condenser.

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.

What causes an orifice tube to fail in an AC system?

Most orifice tubes fail due to contamination in the AC system due to sealer, oil degradation or mechanical deterioration. Replacing a plugged orifice tube without solving the root problem will result in another plugged orifice tube.