Where is the orifice tube on a 98 Chevy truck?

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The orifice/filter is usually installed in the metal part of the high press line where the hex nut joins the long part of the metal portion of the hose. All of these I’ve seen were where the line runs along the inner fender well. Just look for a “bulge” in the metal part of the line where there is a hex nut.

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Consequently, where does an orifice tube go?

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.

One may also ask, what is the orifice tube? Like an expansion valve, the orifice tube is used to control the amount of refrigerant entering the evaporator. An orifice tube is a simple fixed device with no moving parts. It cannot vary the amount of refrigerant flowing into the evaporator the way an expansion valve can.

Furthermore, what happens when an orifice tube is clogged?

Clogged Orifice Tube. The orifice tube can become restricted and clogged with debris. 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.

How do you change an 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.

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