Combine harvester is the main harvesting machinery for farmland. Its working environment is harsh, working time is short, working time is concentrated, and idle time is long. Therefore, the maintenance of combine harvester is particularly important. Maintenance should pay attention to the following points:

　　1: Separate the movable knife from the fixed knife, remove the dirt and other residues attached to the knife, check whether the riveting of the blade is loose, whether the wear exceeds the limit, and whether the knife shaft is deformed. If it is loose, it must be timely Riveting, if the wear exceeds the limit, it must be replaced, if the shank is deformed, it must be corrected. After finishing these things, install and restore as required.

　　2: After each harvesting operation, the soil and straw on the harvester should be cleaned, the inspection hole cover of the harvester should be opened, and the protective cover should be removed, and then the drum chamber, bridge conveying chamber, small shaking plate, fan volute, Clean up the gearbox, header, bridge, engine exterior and other parts.

　　3: Lower the header of the harvester, then padded wooden boards underneath, prop up the front and rear wheels of the harvester, and then padded wooden blocks underneath to ensure that the support is stable and reliable.

　　4: Remove all drive chains, clean them with diesel oil, and then immerse them in engine oil for 15~30 s, then take them out, dry them, and then apply butter, wrap them in plastic cloth and store them in a dry warehouse; relax the tension wheels and relax Transmission belt, check whether the transmission belt can continue to be used, clean it up, apply talcum powder, and hang it; lubricate the transmission parts of the harvester, add lubricating oil or grease, and check the parts with poor transmission Or replace, for the exposed parts with abrasion and coating, remove the rust first and then paint for maintenance; remove the battery of the harvester and keep it separately as required.