Summer is coming, the heat is hot, the excavator is a test, then we need to pay attention to what can maintain the performance of the excavator? In addition to the normal maintenance of excavators, but also pay attention to the following points: First, check whether the antifreeze needs to be replaced when it expires. Many owner of the excavator's knowledge of the antifreeze can prevent the cooling of the radiator and the frozen engine cylinder or cover when freezing in cold winter. But we have to correct a misunderstanding that antifreeze is not only used in winter, it should be used throughout the year. Antifreeze has two characteristics: low freezing point and high boiling point. Therefore, it can not only ensure the normal operation of the vehicle cooling system in winter, but also prevent the cooling water from boiling in summer and avoid the "boiling" situation. In addition, antifreeze usually has the function of rust prevention and corrosion protection. Because in the cooling system, there are metallic and non-metallic materials, and antifreeze rust, anti-corrosion characteristics, can slow down the aging of the entire cooling system. In addition, scale often occurs in the cooling system, and scale will cause blockage of the circulating pipe and thus affect the engine. Antifreeze has the function of scale prevention, thereby reducing this hidden danger. Of course, the genuine antifreeze can be used for 2000 hours, and the general antifreeze can only be used for 1000 hours. Different brands of antifreeze are different. Do not mix them. Next, check whether the water tank, hydraulic oil radiator and air conditioner condenser are blocked. After the autumn, winter, spring excavators, these places are easy to pile up some dead branches and rotten leaves, or willow catkins adsorption. These things impede the heat dissipation of water tanks, hydraulic oil heaters and air conditioning condensers. It is easy to cause high temperature of engine, high temperature deterioration of hydraulic oil, and bad air-conditioning and refrigeration. In addition, there are some cover plates, sponges and sponges at the water tank and radiator of the excavator, which cause the fan suction abnormal (as shown), causing the water tank, the hydraulic oil radiator and the air-conditioner condenser to have a bad heat dissipation. In order to ensure the normal use of the excavator, we should always pay attention to the number of the water temperature meter. When it reaches a certain extent, measures must be taken. After the temperature is lowered, the tension and fatigue degree of the fan belt should be inspected in addition to checking whether the antifreeze fluid is deficient.
Third, the selection of lubricating grease should be appropriate. In summer, the temperature of the excavator will be higher, and the temperature will have a great influence on the fluidity of the grease. The temperature rises and the grease becomes soft, which makes the grease adhesion performance decrease and be easily lost, resulting in the decrease of the lubrication performance of the working device and the rotary device. In addition, at higher temperature, evaporation loss of lubricating grease is increased, and oxidation and condensation are serious. The main reasons for the failure of grease are mostly due to the shrinkage of the gel and the evaporation loss of the base oil. The grease with high temperature performance can maintain its adhesion performance at high temperature, and its deterioration failure process is also slow. Note: never use a grease that looks like flour.
Fourth, wheeled excavator driving in summer, it is easy to cause tire overheating, increased air pressure, tire rubber physical properties decline, causing tire burst. If the tire pressure and tire temperature are too high, the car should be stopped in the shade to cool down and then continue to drive. Check the braking efficiency of the whole machine regularly, so as to detect and remove the faults of the brake system early and reduce the hidden danger of accidents. The use of braking for long time operations makes the brake hub and brake disc too high and the braking performance down. It should be stopped immediately to avoid adverse effects on the safety of the whole machine. But it is not allowed to use cold water to pour tyres and brakes to cool down.
Fifth, wading operation, do not let the water exceed the center of the heavy lifting wheel. If the water overflows the rotary gear ring, pay attention to the timely replacement of the grease inside the gear ring (if the silt mixed in the grease content easy to aggravate the wear of gear and gear ring). When working in water, do not make the excavator tilt angle more than 15 degrees (to avoid the upper structure into the water, radiator fan damage). The track tension cylinder should also be loosely loosely tightened (remove sludge from the oil tank, rain in summer, prevent oil cylinder from rusting). After the operation of the excavator is finished, the small throttle should be run for several minutes, and the standby temperature will be lowered and then extinguished. During the busy season in summer, the excavator will park for a long time, and the fuel tank should be filled with diesel fuel to avoid the rust of the fuel tank. The battery should be removed when parking. Store the battery in dry and moistureproof areas and keep its surface clean and dry. When the excavator is cleaning, do not sprinkle water directly on the electrical components, if water enters, it will cause electrical components failure or failure. Summer maintenance is not difficult, master the above points, then, even in the hot summer, you can also let the equipment worry-free through!
