The place where the tractor works is often the farmland with harsh environment. After a period of use of agricultural machinery, it is necessary to carry out necessary maintenance and maintenance to maintain the good technical state of the equipment. In the instruction manual of the equipment, the detailed requirements for filling the lubricating oil are generally provided for each lubricating part, and the sealing ring needs to be replaced in time after being worn. However, in the survey of actual use conditions, some drivers and maintenance personnel often ignored the above requirements. A few common mistakes are:
1.Need lubrication? Add a little oil!
Due to the difference in the working mode and the state of the various parts of the equipment, there are strict requirements for the refueling cycle of each lubrication point, the amount of refueling and the method of filling each time. The driving and maintenance personnel should be strict according to requirements. Execution, you can't add a little oil at will, so it is difficult to meet the lubrication requirements.
2.Has it been oiled, is it still lubricated?
The different parts of the equipment, the working mode and the ambient temperature, the lubricant requirements are also different, should be added according to the requirements of different types, different grades of lubricants. Only when using a lubricant with the necessary additives and having the required physical and chemical properties can the equipment be well lubricated. It is a bad thing to not look at the grades and refuel.
3.Add more lubricant, no harm?
The structure type and use condition of the operating part of the equipment determine the amount of fueling, and there are usually clear regulations and requirements in the instruction manual of the equipment. The maintainer should replenish it according to the instruction manual, the oil mark of the equipment or the oil dipstick and the window. Excessive filling of the lubricating oil is harmful.
4.After adding the lubricant, do it quickly!
Strictly speaking, this is a misunderstanding of conceptual understanding. Only fuel can directly participate in work. Lubricating oil generally refers to adding lubricating oil between friction pairs that move with each other, filling the uneven portion with the lubricating oil film and maintaining a certain thickness of the lubricating oil film to achieve a frictional pair of two surfaces contacting each other to reduce friction. Resistance, reduced wear, and the role of cooling components and seals. These effects of refueling are indirectly supporting fuel work.
5.Oil spill, change the seal?
In hydraulic systems, oil leakage failure in most cases is caused by seal failure. The sealing ring is sealed by elasticity (pressure).
After the sealing ring is installed in place, its elasticity should be able to pre-stress the contact surface when there is no oil pressure, that is, its cross section should have a certain compression deformation; when it is hydraulically pressed, it will be pressed to one side of the groove to be elastic. Wait for a seal. When replacing the sealing ring, it is necessary to select the sealing ring of the same size in strict accordance with the instructions, otherwise it will not be able to guarantee the proper compression and other requirements. At the same time, special attention should be paid to the fact that the used seals are not applied, and the surface quality should be carefully checked when using new seals. After confirming that there are no defects such as small holes, protrusions, cracks and grooves, and there is sufficient flexibility. be usable. It’s a mistake, and it’s definitely a mistake to change the seal.
6.The sealing ring model is good, just put it on the line?
When replacing the sealing ring, the parts where the hydraulic system is opened should be cleaned strictly, and the system of impurities and dirty oil should be strictly prevented. When installing, it is best to use special tools to prevent metal sharp edges and even fingernails from scratching them. Never seal the sealing ring directly over the threaded part of the component. In special cases, make a simple installation tool or apply a plastic film to wrap the threaded part, and apply a clean hydraulic oil of the same type to the outside of the tool or film. The saying that "on the line" is essentially impossible.
7. Alternate seals, just let them go?
Because the seal contains more additives, it is easy to age and deteriorate. Therefore, it is necessary to avoid the sunlight from being irradiated, and to prevent it from being exposed to moisture and heat. It is also necessary to be careful not to be exposed to acid or alkali substances, and usually should not be stored for more than one and a half years. They cannot be stringed and stored with rope or wire. Therefore, it is not acceptable to leave the spare seals casually.
8. The oil is dirty, fall down!
In addition to the rancidity of hydraulic oil, there are more hydraulic oils and lubricants available. Only hydraulic oil mixed with metal particles can be reused after precipitation and filtration. After the simple treatment, the heavily polluted oil can be used as lubrication equipment for rough processing equipment and rust prevention for open-air equipment, or waste oil can be collected and recycled for waste oil recycling, which can save energy and reduce waste. The “one fell” is a matter of saving the environment and violating the principle of sustainable development.