故障原因：(9)“左旋”装“右旋”油泵，造成冲坏骨架油封；排除方法：“右旋”泵不能装“左旋”机上，否则会冲坏骨架油封；故障原因：(10)液压油过脏。排除方法：清洗系统，更换液压油。故障原因：(11)泵的过滤器被污物阻塞不能起滤油作用排除方法：用干净的清洗油将过滤器去除污物。故障原因：(12)油位不足，吸油位置太高，吸油管露出油面：排除方法：加油到油标位，降低吸油位置。故障原因：(13)泵体与泵盖的两侧没有加纸垫；泵体与泵盖不垂直密封：A4VG125HD1P1/32R-N2D10F69A4VG125HD1P1/32RNSF02F011S-KA4VG90EP1DT1/32R-NAF02F071DA4VSH71MA/10LPPB02N00NA4V7790HW-32L-MCPBA4V7G90HW-32L-MCPBA4VS0180-PR-3X/R-PPB13N00A4V90HD10L0C2020A4VG125HDDT1/32R-N2F-02F011SA4VS0250DFR/30R-PPB13N00A4VG92DA2D6/31L-P2F02F301SA4VSO40DFR/30R-PPB12N00A4VSO250DFR/30R-PPB13N00A4VSO125DR/10R-PPB13N00***G250HWD1/32R-N2D10F69A4VSH71MA/10LPPB02N000NA4VS0180-DR-3X/R-PPB13N00A4VS0125DR/22R-PPB12N00A4VS0125DR/10RPPB13N00)