Strengthening the maintenance and repair of agricultural machinery to ensure its good technical condition is conducive to promoting energy conservation, emission reduction, safe production, and increasing farmers' income. It is of great significance for promoting the high-quality development of agricultural mechanization. To ensure the smooth progress of spring agricultural mechanization production, the following technical points for the maintenance and repair of tractors and supporting agricultural machinery have been compiled for reference by farmers.
1、 Inspection and maintenance of tractor engine
1. Check the lubrication system. In addition to replacing the three core (air filter, diesel filter, oil filter), it is also necessary to replace or clean each hydraulic oil filter. Lubricating oil and fuel should be replaced according to regional and seasonal requirements. If lubricating oil has already been released before the New Year, the oil filling port on the cylinder head should be opened, qualified lubricating oil should be added, and the oil level gauge should be checked after standing for ten minutes. The oil level gauge should be level with the "up" line of the oil level gauge, and then the oil level should be checked for 20-30 minutes. If there is an increase, it is necessary to investigate the cause and troubleshoot. If it is an engine with a turbocharger, it is necessary to remove the hollow bolt at the oil inlet of the turbocharger suspension bearing, drop a few drops of lubricating oil, and then reinstall it. Lubricating grease fittings and oil cups should be fully equipped. Each lubrication part and assembly should be filled with sufficient lubricating oil or grease according to the prescribed oil. The ventilator should be clean and unobstructed.
2. Check the cooling system. In cold regions, it is important to check whether the engine has frostbite, especially for vehicles that were not drained of water or antifreeze before the new year. Carefully inspect the engine body for signs of water blockage, drain switch, oil radiator, and other areas for signs of frost cracking. If it is normal, add soft water until the water tank mouth is level, let it stand for one hour, and see if the water level changes. If the water level drops, it is necessary to investigate the cause. If there is no decrease, it is normal. Be careful not to add well water and tap water that are prone to scale formation.
3. Check the circuit system. The circuits for starting, lighting, and instrumentation should be normal, and there should be no leakage, short circuit, or other phenomena in the insulation parts of all electrical accessories. The cold start device for engines in cold regions should be able to work properly. When the battery is low, it should be charged with one tenth of the rated current of the battery first. When charging lead-acid batteries, if the electrolyte level is level with the engraved line or 10-15 millimeters above the separator, the filling plug should be opened to prevent the air outlet from being blocked and the battery from exploding due to high air pressure. After charging is completed, the voltage of the individual battery should be around 13 volts. After all the above checks are normal, the main and auxiliary transmission handles should be in the "empty", "down", "middle" or "separated" position before starting; The hydraulic power unit should be in the "middle" position; At this point, you can open the small window on the flywheel housing, use a small pry bar to move the flywheel ring gear, rotate the crankshaft several times, and then turn on the ignition switch to start the power. The speed needs to be lowered first and then increased, gradually increasing the power speed. At the same time, observe the instrument and listen carefully for the sound. If there is any abnormality, stop the machine first and then check and eliminate the fault.
After years of arduous entrepreneurship, the company has now developed into a flagship production enterprise in the engineering machinery and construction machinery industry in Shandong Province.
