Maintenance of main parts of tractor

1 maintenance of air filter
Regularly check whether the sealing at the connection of each pipeline of the air cleaner pipe is good. If the nuts, bolts and clamping rings are loose, they shall be fastened in time. If the parts are damaged, they shall be repaired or replaced in time.
Generally, the air filter shall be maintained every 100 hours of operation. When maintaining the paper filter element of dry filter, it shall be cleaned with a soft brush. 0 q4-0。 6Mpa compressed air blows the filter screen, oil pan, central pipe and other parts from inside to outside of the filter element. The filter screen shall be blown dry first, and then assembled after spraying a little oil. The filtered oil shall be used in the oil pan. When adding oil, it shall be filled according to the oil level mark, and the oil level shall not be too high or too low. During installation, it shall ensure that the sealing rubber ring is well sealed.
2 valve maintenance
After the tractor runs for 800 hours, check and adjust the valve clearance and remove the carbon deposit. After 1200 hours, check the sealing of the valve and seat. Grind or replace new parts if necessary.
3 maintenance of diesel filter
The impurities in the filter will continue to increase with the extension of use, and the filtering capacity will decline. The aging and damage of other parts such as gaskets will cause "short circuit", that is, diesel oil will directly enter the oil pump without filtration. Therefore, maintenance shall be carried out. Pay attention to the following points:
(1) The section and center of the filter element shall be well sealed
(2) When maintaining the paper filter element, soak it in diesel oil for a period of time and then brush it with a soft brush. You can also pump air into the filter element with an air cylinder to blow away dirt from inside to outside.
(3) After the filter is disassembled, the air in it shall be drained.
4 maintenance of fuel injector
Generally, after the tractor runs for 800 hours, the injection pressure and injection quality of the fuel injector should be checked and adjusted.
5 maintenance of lubrication system
Add lubricating oil in time. Before starting the diesel engine or working continuously for more than 10 hours, check the oil level of the oil pan.
Clean the lubricating oil filter regularly and replace the filter element.
Replace the lubricating oil of the oil pan regularly, and properly advance or postpone it in combination with the actual situation and oil quality.
Clean the oil circuit. The oil circuit shall be cleaned after the diesel engine works for 500 hours.
Pressure adjustment of lubricating oil circuit. When the diesel engine is working, if it is found that the lubricating oil circuit pressure is lower than the normal pressure, the cause shall be found out. If the pressure regulating spring becomes soft, eccentric wear or broken to reduce the oil pressure, it is necessary to adjust the spring preload or replace the spring to restore the normal pressure.
6 maintenance of clutch pressure plate
Always check the free stroke of the pedal and the separation clearance of the three separation levers.
If the release lever or release fork is seriously worn, replace it with a new one.
Regularly check the lubrication of the bearing and inject grease if necessary. When the tractor works for 500 hours, remove the release bearing for cleaning, and then put it into a container containing butter for heating. Add butter, take it out and put it in after solidification, and the heating temperature should not be too high.
7 maintenance of hydraulic system
Regularly check the height of the hydraulic oil level. If it is insufficient, add or replace the hydraulic oil and be sure to keep it clean.
When cleaning the internal parts of the hydraulic system, in order to prevent oil duct blockage or leakage at the seal, it is forbidden to scrub with cotton.
The rubber sealing ring shall not be soaked with gasoline to avoid aging and deterioration. When assembling the sealing ring, it shall be coated with a little engine oil or soapy water to prevent shearing and tearing.
8 inspection and maintenance of oil tank of hydraulic steering system
The oil tank is set on the right side under the rear body of the hood. Open the mailbox cover and observe whether there is oil mark on the oil dipstick. If there is no oil mark, it indicates that the oil in the steering oil tank is insufficient. Check and find out the cause of oil leakage, then remove the oil tank, add oil to the middle score of the dipstick, and then install it back to the original position. During the inspection, the system checks that there is no oil leakage at the hydraulic steering cylinder, oil pipe and connector, Otherwise, it is easy to cause poor steering, and the filter screen in the oil pipe shall be cleaned or replaced regularly.
When checking the oil level, check whether the breather valve at the center above the oil tank cover can rise and fall flexibly. If there is oil stain affecting the rise and fall, clean it.
9 maintenance of electrical system
Check the connection of each conductor, which must be fastened and reliable, shall not be contaminated by diesel and engine oil, prevent contact with the hot part of diesel engine, and check whether the insulation performance of the conductor is good.
Battery maintenance
(1) Maintenance free batteries do not need special maintenance at ordinary times. The observation liquid specific gravity and observation hole show green, indicating sufficient power, gray, insufficient power, and black indicates basic stains.
(2) If the battery observation hole is gray, it needs to be recharged. If the black display appears, the battery should be replaced.
(3) The battery shall be stored in a clean, dry and ventilated place with the temperature between 0 ~ 40. It shall be handled with care to prevent collision and shall not be upside down.
(4) The battery terminal and the power line connector shall be firmly connected to prevent the terminal from melting during startup. In order to prevent oxidation and corrosion of terminals, Vaseline shall be coated on the wiring.
(5) Keep the external terminals of the battery clean.
(6) Regularly check whether the engine output voltage meets the standard voltage of (14,2 + 0,2) volts.
(7) When charging, ensure smooth indoor air, keep away from open fire, and do not splash electrolyte on human body or clothes to avoid accidental injury.
(8) When the electrolyte of ordinary battery is insufficient, it shall be filled in time.
(9) During charging, the electrolyte temperature shall not be higher than 45 degrees. The charging current shall be halved or the charging shall be stopped to achieve the purpose of cooling, but the charging time shall be extended accordingly.
(10) After charging, disconnect the power supply before disconnecting the power supply from the pole to prevent fire or explosion caused by fire.
10 maintenance of engine cooling system
The engine coolant can be boiled tap water or antifreeze. Before starting, first check whether the cooling water in the radiator is full and whether there is water leakage.
Regularly remove the scale in the cooling system to ensure the heat exchange surface and heat dissipation.
Regularly check whether the radiator core is blocked by weeds, dust, oil, etc.