来源:http://www.jufengjiaobanji.com 日期:2022-01-10 发布人:jufeng
1. Increasing fuel consumption
(1) Adverse reaction: the fuel consumption of mixer truck is increasing.
(2) Cause of illness: there are many reasons for the increase in fuel consumption. But the common and easily overlooked is the inspection of tire pressure. Insufficient tire pressure will not only increase driving resistance and fuel consumption, but also affect the service life of tires.
(3) Green maintenance: bring your own tire pressure gauge and check the tire pressure frequently. Remember not to forget the inspection of the spare tire, so as to avoid finding that the spare tire cannot be used when it is in urgent need of replacement. When the temperature is high, the tire pressure will be higher than usual. The tire pressure measured in cold days or in the shade is more accurate. The positions of tires shall be changed every 10000 km to avoid too large difference between front and rear wear. If you need to replace seriously worn tires, replace 2 or 4 tires together. Tires with the same grain can be replaced crosswise. In addition, broken line tires help to save fuel.
Maintenance of chassis of automatic concrete loading mixer
2. Power performance degradation
(1) Adverse reactions: the engine power performance decreases, the fuel consumption increases, and the nozzle is blocked.
(2) Cause of illness: it is likely that the engine oil, oil filter, air filter and steam (diesel) oil filter have not been changed for a long time, resulting in insufficient oil combustion and more carbon deposition in the engine.
(3) Green maintenance: it is recommended to replace the engine oil and oil filter every 5000km, and replace the air filter and steam (diesel) oil filter every 10000km, otherwise the impurities in air, fuel and engine oil will cause parts wear and oil circuit blockage, thus affecting the normal operation of the engine.
3 coolant drip
(1) Adverse reaction: a pool of inexplicable liquid drips out under the car, and the liquid level of coolant drops.
(2) Cause of illness: usually, the cause of leakage is a crack in the rubber tube connecting the coolant tank and the engine.
(3) Green maintenance: the deterioration of the antirust quality of the coolant will not only easily lead to the damage of the radiator, pipeline, hose and other components, but also cause environmental and air pollution because the main component of the coolant is ethylene glycol, which drips to the ground. Table 2 common fault analysis and troubleshooting methods of the working device of the concrete mixer will also cause environmental and air pollution. It is difficult to judge whether the coolant is deteriorated by visual inspection, so replace the coolant regularly and do not wait until there is a fault. It is generally recommended that the coolant of the concrete mixer should be replaced every 40000 km or 2 years, and the cooling fan belt should be replaced every 2 years.
4 engine does not start
(1) Adverse reaction: multiple ignition, engine does not start.
(2) Cause of illness: the ignition of the spark plug is completed by the current of the battery when the engine is started. Therefore, the failure of the starting system may be caused by the rust of the battery or the dripping of battery liquid.
(3) Green maintenance: check whether the battery liquid in the battery is sufficient every 1 ~ 2 months. If not enough, add distilled water to the appropriate height. At present, most passenger cars use maintenance free batteries, and water cannot be added without authorization. In addition, check whether the positive and negative terminal contacts of the battery are rusty or dirty every year.
Maintenance of chassis of automatic concrete loading mixer
5 increase of exhaust noise
(1) Adverse reaction: the noise of engine exhaust increases and the exhaust emission exceeds the standard.
(2) Cause of illness: the exhaust gas of the engine is oxidized at high temperature, which is likely to lead to leakage of the exhaust system.
(3) Green maintenance: check whether the pipelines and interfaces of the exhaust system (especially the muffler) are corroded by waste gas and whether the interface pad is washed out. If the exhaust system leaks, repair or replace the leaking parts in time. Checking once a year can not only ensure the normal operation of the exhaust system, but also reduce the pollution of tail gas to the environment.