Misunderstanding of lubricants for construction machinery equipment
Misunderstanding 1: The engine oil can add more
The amount of lubricant should be controlled between the upper and lower tick marks of the oil dipstick. As we all know, a small amount of oil can cause insufficient oil supply, poor lubrication, and lead to mechanical accidents. Therefore, when you are refueling, you should not “because you would rather increase” because of the lack of oil. In fact, an excessive amount of oil will not only increase the power consumption of the crankshaft due to the increase of the rotational resistance, but also cause the oil to be prone to bubbles, emulsification, and spillage, resulting in poor lubrication.
Misunderstanding 2: Oil with high viscosity is better than engine oil with low viscosity
If the viscosity level of the lubricant is selected too high, the pumping performance of the oil pump will be poor, the flow rate will be reduced, and its lubricity, washing property and heat dissipation will be deteriorated. The semi-dry friction of the parts will be easily caused, causing burning of the tiles. Axis failure.
Misuse of lubricants for construction machinery equipment
Misunderstanding 3: Using high-viscosity oil can solve the problem of engine work and engine oil problems
The inability of the engine to work, the cost of oil, and the phenomenon of engine oil are the external features of deterioration of the engine’s technical condition. The basis for “using high-viscosity engine oil to solve the above problems” is insufficient. On the contrary, the starting resistance of the engine will increase, the lubricating performance will deteriorate, and the wear of the machine will increase.
Misunderstanding 4: Change the oil level according to the requirements of the machine
The oil level specified in the mechanical instruction manual is for general conditions. In the practice of machine oil change maintenance, the actual conditions of use must also be considered. If the actual conditions of use are more stringent than the specified conditions of use, Test) Select a higher grade of oil, or shorten the oil change period as appropriate.
Misunderstanding 5: Lubricants turn black to indicate that the lubricant has deteriorated
Lubricating oils on the market today have added appropriate amounts of various additives to improve their lubricating properties. It is a normal phenomenon that the lubricating oil of an internal combustion engine containing a clean dispersant is blackened soon after use. It cannot be considered that “oil has deteriorated” and it can be easily replaced; lubricant oil with additives tends to make the bearing surface dark during use. It is also a normal phenomenon. Therefore, when it is determined whether the lubricating oil has deteriorated, visual judgment alone cannot be made and a comprehensive analysis must be conducted. When conditions are met, the oil should be tested and tested, so that oil changes according to quality.
Misunderstanding 6: Full hub lubrication is better than hollow hub lubrication
In the machine’s oil change maintenance and repair work can often see: In addition to the hub bearing is full of grease, the hub cavity is also filled with the phenomenon, this fatliquor method is customarily called “full hub lubrication” . Practice has proved that the hub bearing is the best way to use empty hub lubrication. The so-called “bulk lubrication” is to coat the hub bearing with grease, while the hub cavity is only coated with a thin layer of grease for rust prevention. “Full Hub Lubrication” is not only a waste of grease, but also due to excessive grease, increased internal friction, increased bearing temperature, and loss of grease. In severe cases, the lost grease may penetrate the brake device, causing the brake to malfunction and causing an accident.
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