1, the distribution valve piston leakage failure phenomenon is: when the brake pedal is pressed, a large amount of compressed air leaked from the trailer control valve, and soon the trailer inside the cylinder of compressed air leakage, the loss of braking effect. Remedy: Disassemble the valve and inspect it. Replace it if worn or broken. 2. The cause of the malfunction of the trailer's brake is that the pressure adjustment screw of the trailer control valve is too loose and the air pressure in the trailer's air reservoir is too low, or the pipeline is blocked or leaks. Remedy: First, check whether the compressed air pressure of the trailer's air reservoir complies with the standard. Then, check whether the pipelines are clogged or leaked. If any, remove the air. 3, trailer brake bite is mainly due to the trailer control valve adjustment screw is tightened too tight, so that the trailer gas reservoir pressure is too high, if you add the host vehicle excessive use of brakes, air horns, pneumatic wipers and other gas equipment, Compressed air is difficult to make up immediately, causing the main vehicle to fail and the trailer brakes to die, causing the trailer tires to wear out so quickly that they are scrapped. In this case, correct adjustments should be made promptly. In addition, if the intake valve of the distribution valve leaks, even if the main vehicle does not brake, the trailer will spontaneously brake and bite. Check the replacement valve of the distribution valve in time. 4. If the trailer braking effect is too slow If the braking time of the trailer is too late, the braking distance will be extended. Therefore, the trailer control valve and the distribution valve must be adjusted in time to clear the blocked pipeline.
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