In order to maintain the normal operation of the tractor, the following eight holes must not be blocked, and it is necessary to keep it open at all times. First, the needle valve of the injector is blocked after the oil return hole is blocked, oil supply is uneven, and the engine is not stable. Second, the thermostat main valve of the air hole is blocked after the body of the water within the water jacket is not clean, the tank is not full of water, easily lead to open pot. Cold winter water can not enter the water tank, easy to freeze the tank. Third, the water pump leakage hole plugging water leakage will enter the water pump bearing shell, so that the grease hydration, reduce the lubrication performance, so that the water pump bearing damage. Fourth, the air filter cover dust blocking holes in the air after the dust particles can not be discharged, easy to plug the lower filter, suction reduction, power drop, and even dust particles into the combustion chamber, accelerate the valve, liner, piston and other machine punch Wear. 5. After the plug of the crankcase air vent is blocked, the sump oil in the crankcase becomes thin and deteriorates, which reduces the lubricating performance and causes burning of oil, which increases the consumption of oil. 6. When the drain hole at the pump push rod and push rod sleeve is plugged, the oil in the oil reservoir of the oil pump will increase, thin and overflow. 7. The exhaust gas inside the battery can not be discharged in time after plugging in the hole in the battery cover, thus damaging the battery. 8. Once the small hole in the lower part of the clutch casing is blocked, once the crankshaft oil seal leaks and the clutch stores oil, it will cause the clutch to slip. In the use and maintenance of the tractor, it is necessary to effectively achieve the above points, and it is very useful to extend the service life of the machine and the protection of the machine.
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