Oil loader hydraulic pump should be installed in a coarse filter, and the suction mouth from the tank at the bottom of a certain distance; small loaders should be installed at the outlet of high pressure filter, and the filtration effect should be consistent with the system requirements, to prevent dirt clogging caused by the fault in the hydraulic system; hydraulic oil separator small loader the installation of the filter to remove impurities, not to go back to the oil filter filter. Small loader hydraulic cylinder to be installed on a metal protective ring, to prevent dirt is brought into the cylinder, and can prevent water and light radiation leakage caused by erosion of the hydraulic cylinder; check and clean the internal iron impurities should be installed before the regular inspection of hydraulic components; hydraulic oil, once immediately and cleaning system it is found that the oil oil metamorphism, foam, sediment, oil-water separation phenomenon. New oil into the small loader before the tank, should be static sedimentation, filtering before joining, and if necessary, you can set an intermediate tank to carry out the precipitation and filtration of new oil, to ensure the cleanliness of the oil.