The cause of air brake failure: insufficient air pressure in the air cylinder, excessive free stroke of the brake pedal of the suction truck, insufficient air pressure in the brake air chamber, excessive clearance or poor contact between the brake shoe of the suction truck and the brake drum; Brake shoes have oil stains or wear, rivets exposed.
The method of inspection and exclusion is: first check the gas in the gas cylinder too low. If the pressure of the gas cylinder does not reach the specified value after the engine is started for a few minutes, the brake pedal of the suction truck can be used to check. When you relax the brake pedal, if you can hear a clear brake valve exhaust sound, indicating that the system pressure is normal, and the barometer is faulty.
If the barometer is good, it indicates that the air compressor is defective or the pipe is leaking. The air compressor does not pump air. In addition to the air compressor itself, the compressor belt is too loose or the oil may cause slippage. It should be checked and eliminated. The pressure of the air reservoir should normally be checked for the free travel of the brake pedal of the suction truck. When the brake pedal is pressed to the end, the air pressure in the brake air chamber should be 4-5 kg.
When the air pressure is insufficient, use the brake control valve adjustment screw to adjust. When adjusting the brake pedal of the suction truck after the adjustment is appropriate, ensure that the brake control valve exhaust valve can be completely closed, there is no leakage phenomenon, and when the pedal is relaxed, the exhaust gas is unblocked.
After all the above-mentioned inspections are good, but if the brakes are still not working, check the wheel brakes of the suction truck. According to the regulations, after adjusting, it is still unqualified. The brake drum should be dismantled and inspected to check whether there is oil on the brake shoe friction plate, whether the brake drum is deformed, whether the friction plate is in good contact with the suction drum brake drum, and whether the friction plate is Worn out, exposed rivets.
Hubei Cheng Li Special Purpose Vehicle Co., Ltd., Sales Manager Chen Xin, Contact Tel: Welcome to visit us!
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