Jack is a kind of safe and reliable lifting equipment. Generally, there will be no problems, but there are also the following precautions in use:

(1) Generally, the working medium of Jack is yb-n32 hydraulic oil. When the ambient temperature is lower than 10 ℃, yb-n22 hydraulic oil can be used. When the ambient temperature is higher than 40 ℃, yb-n46 hydraulic oil can be used.

(2) During operation, the liquid level of the oil tank shall always be kept on the center line of the oil mark to prevent the oil pump from sucking empty. During refueling, 120 mesh oil filter shall be used to filter impurities in new oil. In case of frequent use, the oil filter shall be cleaned every 2 months, the oil tank shall be cleaned every half a year, and the new oil shall be replaced at the same time.