Everyone knows that fire trucks will only appear when dangers arise. Fire trucks are a dangerous place on the scene, saving lives. Therefore, the safety of the fire truck itself is particularly important to prevent the occurrence of fire truck failure problems and to stay away from danger.
1. Change in working condition
The so-called sudden change of working condition means that the working condition of the fire truck suddenly appears abnormal. This is a common symptom of the fault. For example, the engine is suddenly started after the engine is suddenly turned off, and it is not even able to start. The engine suddenly decreases in driving and the driving force is weak. Sudden braking failure or deviation, even failure in driving. The symptoms of this fault are obvious, so it is easy to detect.
2. Abnormal noise
The abnormal sound of the car during driving is an "alarm" of the car's fault. Suddenly an abnormal noise is emitted during driving. As the driver should be aware of the problem with the car, he should immediately stop the car and check that the vehicle must not be taken. Sick work".
3. Exhaust smoke is not normal
During the operation of the engine, the main components of normal combustion products should be carbon dioxide and a small amount of water vapor. If the engine is not burning properly, the exhaust gas will be mixed with incompletely burned carbon particles, hydrocarbons, carbon monoxide and a large amount of water vapor. In addition, there are also nitrogen oxides, etc., when the color of the exhaust gas may turn black, blue or white, that is to say, the exhaust smoke is not normal. For gasoline engines, the normal exhaust gas should have no obvious smoke. When the cylinder is in the cylinder, the exhaust gas is blue; when the combustion is incomplete, the exhaust gas is black, and when the oil is mixed with water, the exhaust gas is white.
4. Superheated high temperature
Usually found in engines, transmissions, transaxle final drives, differentials and brakes. For example, the engine is overheated, mostly due to cooling system problems, lack of coolant or pump failure; transmission and drive axle overheating, Mostly caused by lack of lubricating oil; the brake is overheated, mostly caused by the brake shoe not returning. The above phenomenon can sometimes be directly reflected by the warning light of the instrument panel. It is necessary for the driver to pay attention to the observation while driving, or to test the appearance by hand. temperature.
Leakage refers to the leakage of fuel, lubricating oil (or gear oil), brake fluid (or compressed air), and power steering oil of automobile engines. This is also an obvious symptom of failure, which can be found by careful observation. For example, when the compressed air leaks, the sound of the leak can be clearly heard.
6. Excessive fuel and lubrication consumption
Excessive consumption of fuel and lubricants indicates that the technical condition of the car has deteriorated and has caused a malfunction.
7. Have a special smell
During the operation of the fire truck, if there is a fault such as brake drag, clutch slip, etc., the burnt smell of the friction plate will be emitted; when the engine is overheated and the lubricating oil cylinder is burned, a special smell will be emitted; the circuit is short-circuited Iron wire will also have a burnt smell when burned.
8. The car looks abnormal
The fire truck is parked on a flat surface to check the appearance. If there is a phenomenon such as lateral or longitudinal skew, it is abnormal in appearance. The reason is that the frame, the body, the suspension, the tire, etc. are faulty, which will cause the direction of travel. Unstable, deviation, center of gravity shift and wheel "eat tire" and other faults.
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