(1)泵不吸油或出油无压力。原因可能是:滤芯堵塞;油管破裂、老化或油管连接部位泄漏,使空气进入;泵零件磨损,间隙过大;液压油黏度过大,叶片滑动阻力大;油箱油面过低。排除方法是:用酒精清洗滤芯,更换油管、液压油;检查、紧固各连接部位;检修助 (1) pump does not absorb oil or oil pressure. The reasons may be: filter plugging; tubing rupture, aging or leakage of tubing connections, so that air enters; pump parts wear, the gap is too large; hydraulic oil viscosity is too large, the blade sliding resistance; oil tank is too low. Remedy is: use alcohol to clean the filter, replace the tubing, hydraulic oil; check, fasten the connection parts;