What faults can be caused by excessive water accumulation in the gas storage cylinder of a truck

The vast majority of heavy-duty trucks, construction dump trucks, and semi trailers use air brake systems, and the air reservoir serves as the pressure storage core of the braking system, which is a key component to ensure the safety of driving braking. Under the working conditions of construction sites with heavy rain, dust, and large temperature differences between day and night overseas, air compressors are prone to produce condensation water. If not drained in a timely manner for a long time, the accumulated water will accumulate in the air storage cylinder and air pipeline, causing a series of brake failures. This not only accelerates the aging of air valve components, but also poses high-risk hazards such as brake failure and trailer lock up in severe cases. Many overseas fleets neglect the daily drainage of gas storage tanks, causing small water accumulation to cause major malfunctions, significantly increasing maintenance costs and downtime risks. Below is a detailed analysis of various common faults caused by excessive water accumulation in gas storage tanks. The most direct and dangerous malfunction caused by excessive water accumulation is the failure of the braking system, resulting in soft and delayed braking. Water vapor entering the main brake valve, relay valve, and quick release valve will dilute the lubricating grease inside the valve body, causing the piston inside the valve body to jam, seal poorly, and the brake air supply pressure to be insufficient, resulting in problems such as inability to press the brake, longer braking distance, and slow response. Especially when driving heavy loads on long downhill slopes in mining areas, brake failure can easily lead to safety accidents, which is the biggest safety hazard for overseas heavy truck operations. Secondly, it will cause corrosion and damage to the brake cylinder and spring brake chamber. Long term accumulation of water flowing through the chamber and cylinder will corrode the rubber diaphragm, spring, and metal inner wall, causing the diaphragm to age and crack, the chamber to leak air, and the return to position to be stuck. After releasing the brake, the vehicle's brakes cannot rebound, resulting in problems such as dragging brakes, wheel overheating, and abnormal tire wear. Long term dragging and braking will also cause damage to the brake pads and brake drums, significantly increasing maintenance costs. The accumulation of water in the air reservoir can directly lead to the freezing and blockage of the air circuit in winter. In tropical and subtropical overseas areas, there is a large temperature difference between day and night, and the low temperature at night can easily cause the pipeline to accumulate water and freeze, blocking the air ducts and valve holes, resulting in brake lock, inability to release the parking brake, and inability to start the vehicle. Many overseas fleets' vehicles get stuck in winter, and the core reason is the accumulation of water and ice in the air reservoir.At the same time, water accumulation can cause rapid aging and rusting of the entire vehicle's air circuit components, as well as long-term water accumulation and rusting of the air storage cylinder, air pipeline, and joints. This can lead to problems such as peeling of the pipe wall, sand holes, air leakage, and pipeline cracking. Frequent vehicle air leakage, inability to increase air pressure, and rapid idle pressure relief not only affect normal driving, but also accelerate the wear and tear of the air compressor, resulting in frequent high load operation and a significant increase in failure rate. In addition, automatic drain valve failure and valve body blockage are also high-frequency derivative faults. Water accumulation mixed with sediment and oil stains accumulates at the drain valve, which easily blocks the drain hole, leading to the failure of the drainage function and forming a vicious cycle of accumulation. It can also cause abnormal operation of pneumatic components such as differential locks, airbag suspensions, and driver's cabin airbags, resulting in problems such as lifting lag and lock failure. To avoid the above faults, overseas construction teams need to develop a normalized drainage habit, manually open the air storage tank drainage valve to drain the accumulated water after receiving the vehicle every day, regularly check whether the automatic drainage valve is unobstructed, and install drying tanks and pressure regulating valves on old vehicles to filter out moisture and impurities in the air. Long term humid and rainy working conditions require shortening the replacement cycle of the drying tank to reduce the problem of water ingress in the gas path from the source. In summary, the accumulation of water in the air reservoir may seem like a minor issue, but it is the root cause of most faults in the air brake system. By adhering to daily drainage maintenance, it is possible to effectively ensure the stability of the braking system, eliminate driving safety hazards, extend the service life of the entire vehicle's air circuit components, and ensure the continuous and stable operation of the fleet without additional costs.