When to replace the air dryer for heavy trucks
Air brakes on commercial vehicles
Today, most commercial fleet drivers choose to drive heavy vehicles with air braking systems; No wonder: air brakes are cost-effective; It is more environmentally friendly and reliable than traditional braking systems. These drivers rely on the clean air filter in the system to protect the vehicle and avoid brake failure; To ensure the normal operation of the system, the driver believes that the air dryer can remove harmful pollutants, such as oil and moisture, which may reach the air supply tank and damage the air valve; Air brake and even engine. Continue reading to learn when to replace the air dryer in the vehicle with air braking system and the warning sign of air dryer failure.
What is the air dryer on the truck?
Do you know what happens when moisture gets trapped in a wet towel? It can produce mold; Although it is possible to save this towel, buying a new towel is a more attractive solution. The same concept applies to air dryers.
The air dryer is located between the compressor and the air receiver, and efforts are made to remove solids, liquids and vapors that may damage the entire air braking system. Its working principle is as follows: when warm air encounters the air compressor, the moisture will condense (cool) on the wall, and then be discharged to the purge valve, where it will be filtered about every 15 seconds to separate and treat the air particles circulating around the compressor. At this time, the governor starts the gear and sends a signal to the purge valve to open it, forcing air and harmful pollutants out. This process helps to remove pollutants and keep the air braking system cleaner and longer.
How do I know the air dryer is broken?
Large trucks, even school buses, should replace the air dryer element every year or 100000 miles. Double and triple trailer trucks can remain unchanged for two years or 200000 miles.
Heavy trucks, like other vehicles, need maintenance; In addition, it may be difficult to accurately locate vehicle problems without expert diagnosis; But if you hear or see these symptoms, it's probably time to replace the air dryer.
Symptoms of air dryer failure
The air dryer may fail due to leakage; Clogs; Worn parts and electrical problems.
Air leakage is one of the most common reasons for the failure of truck air dryer, which should be checked regularly. The good news is that the leakage around the compressor can be repaired and can be tightened with basic hand tools. Blocking will lead to poor filtration of the system and block the purge valve; Worn parts, such as seals, may draw in compressed air. We do not want these problems to happen; However, what the driver really needs to pay attention to is the electrical problem, including that the compressor does not start or stop. This may be because the circuit breaker and pressure valve are broken. The compressor may make a loud clicking noise, which may also be due to loose parts.
How do I test the purge valve on the air dryer?
Grasp the two power cords for testing. Locate and plug the delivery port on the tank, then take a line and fill the supply line with air. Fill the dryer with air. If the compressor leaks, you can understand it now. Then, remove a supply line, fill the control line, and let the purification line empty. If it is good, it will stop naturally. This is a quick and easy way to test the purge valve of the air dryer.
Who should be trusted to replace the air dryer?
In terms of air handling devices, AYREST is one of the most trusted brands in the industry; It is also recommended that they be used in an economical air dryer system. The air dryer is an important part of the vehicle equipped with air brake and should not be ignored in daily inspection and maintenance.
