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SouthCentral WI | I'll try
No, moving the air compressor intake wouldn't help. The reason is the compressor heats the air up when it compresses it. This is a fact of physics. The slightly warmer or colder air from the intake won't help.
This isn't an exact explanation of an air dryer, but for all intensive purposes it will work.
The object of the air dryer is to cool the air to ambient temperature. As the air cools water condenses (liquefied) out of the air . The dryer separates the liquid from the air and discharges it when the governor unloads the air compressor.
One of the issues in this system is that the line from the compressor to the air dryer cools the air (some) as it is moving to the dryer. As this cooling takes place, it is producing water.
To combat this issue, manufacturer try to do 3 things.
1. Use a steel or copper lines with a smooth bore inside.
2. Slope the line back towards the dryer so water (with air pushing it) runs towards the dryer.
3. Insulate the line farther back from the engine so the water won't freeze in the line.
Having thawed out 1000's of air lines / dryers, I can tell you that people who install or engineer these air systems have no clue as to how they work. Most of the system that fail are design issues to begin with.
If you constantly have an issue with the system on your truck the only real answer is to redesign it to fit the 3 parameter above. Remember the object is to get the air down to ambient temperature when it leaves the dryer. In the process you need to make sure that the input line (from the compressor) doesn't have a place to pool water and that it stays above freezing.
Systems that route the air line around the engine, under the rad and up to the dryer are a disaster . Then add the fact that the dryer is mounted behind the bumper in the coldest, windiest place possible and wonder why there is an issue.
Caveat ... You need to have flexible connection somewhere in the compressor air line so as the engine moves (torque from eng) the line can flex. For this reason there is a special air line we use in place of a steel or copper line. It has a stainless weaved outer shield.
Am I ever going to finish this thread.........
A tight air system on a truck is one of the easiest solutions to air freeze issues. If your compressor constantly cycles or cycles more than it should, you are pumping more water into the system. A tight air system produces less water.
Towman
Edited by towman2000 1/29/2021 12:24
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Fld 120 Cummins
