The necessity of air filters
The air contains a lot of fine dust. When the engine is running, if these dust impurities enter the cylinder with the air, it will accelerate the wear of the cylinder liner, piston, piston ring, and valve light parts. Especially when tractors are operating in fields, non asphalt or cement roads for transportation, or in windy seasons, the air contains a large amount of dust. When the air is sucked into the cylinders, it will cause serious engine wear. Due to the fact that only a small portion of the dust entering the cylinder can be discharged from the body with the exhaust gas, the remaining dust mixed with engine oil can further cause wear on the crankshaft journal and lubrication system components. At the same time, dust can also clog the air filter, increasing intake resistance, reducing inflation, and increasing fuel consumption. In addition, due to wear of the cylinder and piston, the gap between the cylinders increases, which can also cause increased oil consumption and difficulties in starting.

Problems in the use of air filters
1. Shake your head and head, tie with ropes and ropes
This phenomenon is quite common in old machines. Due to the loose fixation of the clamps, the connection between the filter and the intake pipe or the intake pipe and the body becomes loose. When the engine is working, the air filter shakes back and forth. Some operators simply fix it with iron wires or ropes, which can cause air leakage problems. Under long-term vibration, the air filter is prone to deformation and damage, losing its filtering function.
2. Wearing masks indiscriminately and having difficulty breathing in air
Some operators cover the inlet of the air filter with gauze to increase its filtering performance. After covering with a cloth, it increased the intake resistance, causing insufficient intake during engine operation. At the same time, it will affect the three-stage filtering air filter, causing a decrease in the rotation speed of the air, and the first stage filtering dry centrifugal type will lose its function.
3. Lack of maintenance and increased wear and tear
There are still problems with the use of air filters: some operators do not use air filters; The metal wire of the metal filter is broken, loose, damaged, blocked, or has no metal filter; The central tube is too dirty; The three climbing joints connecting the oil storage pan and the filter housing are damaged or partially damaged; Failure to take effective measures during dusty operations such as threshing, covering seeds, and processing agricultural and sideline products; Missing, misplaced or damaged sealing rings and gaskets; The ventilation pipe of the crankcase has fallen off; The oil in the oil storage pan is too dirty or lacks oil, and there is too much or too little oil, or the oil is added incorrectly.