泵体之间的间隙过大也会导致泵不出油对于泵体之间间隙过大，应先在泵体处加注一批润滑剂，然后再用来泵入泵体内；如果泵体之间间隙过小，应将泵内液体吸净，再用新液位计检测液面高度来确定泵体内的位置；如果泵内液体浓度太高会造成油中含有大量水分，此时应重新加油；如果泵体上粘有胶状物体也可能导致液体泄漏；另外还要注意检查电磁阀是否正常良好；液压油过脏会导致压力表不能正常显示；如果压力下降到正常值后就开始停机了；对于泵内有异物堵塞可能导致油泵在工作中无法工作；如果压力表有明显响声，表明是液压管路中的油管与泵体密封损坏造成液压腔中充满空气，由于压力过高而使泵不出油或无油，应及时更换液压油箱内堵塞较大的油管及泵体其他部件；对于密封圈损坏会导致液压管路出现泄漏。
如果液压元件损坏，会使其输出电压、工作压力等出现偏差，从而使其不能工作，甚至停机所以应及时更换或修理密封圈、液压元件如果液压元件已经老化，也应及时更换换油方法是：拆下损坏严重的液压元件，拆下油底壳检查液压油是否有变质并更换新液压元件。
检查液压油时一定要注意其压力是否达到标准规定的值，当液压油过高或过低都不会起作用检查液压元件时，应注意其工作介质是否与液压元件工作介质不相容，若不相容首先检查有无泄漏现象，然后再判断其工作介质类型，如液压油因环境湿度大而变质严重时应更换新液压元件；若液压元件已老化或损坏很严重必须更换，则必须将液压元件放在通风阴凉处保管，直到其不再工作为止。
90-L-100-MA-1-NN-80-P-3-F1-E-09-GBA-45-45-20 90L100MA1NN80P3F1E09GBA454520 90-L-100-MA-1-NN-80-P-3-F1-E-09-GBA-45-45-24 90L100MA1NN80P3F1E09GBA454524 90-L-100-MA-1-NN-80-P-3-S1-E-03-GBA-35-35-24 90L100MA1NN80P3S1E03GBA353524 90-L-100-MA-1-NN-80-P-3-T2-E-03-GBA-42-42-24 90L100MA1NN80P3T2E03GBA424224 90-L-100-MA-1-NN-80-R-4-F1-E-03-GBA-35-35-24 90L100MA1NN80R4F1E03GBA353524 90-L-100-MA-1-NN-80-R-4-S1-F-03-GBA-29-29-24 90L100MA1NN80R4S1F03GBA292924 90-L-100-MA-1-NN-80-S-3-C7-E-03-GBA-29-29-24 90L100MA1NN80S3C7E03GBA292924 90-L-100-MA-1-NN-80-S-3-C7-E-03-GBA-42-42-24 90L100MA1NN80S3C7E03GBA424224 90L100-MA-1-NN-80-S-3-C7-E-03-GBA-42-42-24 90L100MA1NN80S3C7E03GBA424224 90-L-100-MA-1-NN-80-S-3-C7-F-03-GBA-26-26-20 90L100MA1NN80S3C7F03GBA262620 90-L-100-MA-1-NN-80-S-3-F1-D-03-GBA-42-42-24 90L100MA1NN80S3F1D03GBA424224 90-L-100-MA-1-NN-80-S-3-F1-E-02-GBA-42-42-24 90L100MA1NN80S3F1E02GBA424224 90-L-100-MA-1-NN-80-S-3-F1-E-03-GBA-32-32-20 90L100MA1NN80S3F1E03GBA323220 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90-L-100-MA-1-NN-80-S-4-F1-E-02-GBA-35-35-24 90L100MA1NN80S4F1E02GBA353524 90-L-100-MA-1-NN-80-S-4-F1-E-03-GBA-23-23-24 90L100MA1NN80S4F1E03GBA232324 90-L-100-MA-1-NN-80-S-4-F1-F-03-GBA-38-38-24 90L100MA1NN80S4F1F03GBA383824 90-L-100-MA-1-NN-80-S-4-S1-E-02-GBA-42-42-24 90L100MA1NN80S4S1E02GBA424224 90L100-MA-1-NN-80-S-4-S1-E-03-GBA-35-35-24 90L100MA1NN80S4S1E03GBA353524 90-L-100-MA-1-NN-80-S-4-S1-E-03-GBA-35-35-24 90L100MA1NN80S4S1E03GBA353524 90-L-100-MA-1-NN-80-S-4-S1-E-03-GBA-38-38-24 90L100MA1NN80S4S1E03GBA383824 90-L-100-MA-2-BC-60-P-3-C7-E-03-GBA-42-42-24 90L100MA2BC60P3C7E03GBA424224 90-L-100-MA-2-NN-80-S-3-F1-E-03-GBA-35-35-24 90L100MA2NN80S3F1E03GBA353524 90-L-100-MA-2-NN-80-S-4-S1-E-03-GBA-42-42-24 90L100MA2NN80S4S1E03GBA424224 90-L-100-MA-5-AB-60-L-4-C7-E-C5-GBA-35-35-24 90L100MA5AB60L4C7EC5GBA353524 90L100-MA-5-AB-60-S-3-C7-E-C5-GBA-42-42-24 90L100MA5AB60S3C7EC5GBA424224 90-L-100-MA-5-AB-60-S-3-C7-E-C5-GBA-42-42-24 90L100MA5AB60S3C7EC5GBA424224 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90-L-100-MS-1-BC-60-P-3-F1-F-03-GBA-35-35-24 90L100MS1BC60P3F1F03GBA353524 90-L-100-MS-1-BC-80-L-3-F1-E-02-GBA-35-35-24 90L100MS1BC80L3F1E02GBA353524 90-L-100-MS-1-BC-80-L-3-F1-F-02-GBA-42-42-28 90L100MS1BC80L3F1F02GBA424228 90-L-100-MS-1-NN-80-L-3-F1-F-03-GBA-35-35-24 90L100MS1NN80L3F1F03GBA353524 。
