故障原因：(1)液压油箱油面过低；排除方法：添加液压油故障原因：(2)没按季节使用液压油；排除方法：通常适用46#液压油（或68#）无需要特别更换，冬季的北方特冷时考虑使用32#故障原因：(3)进油管被脏物严重堵塞；排除方法：取出管内***故障原因：(4)油泵主动齿轮油封损坏，空气进入液压系统；排除方法：更换老化的或损坏的油封、O形密封圈故障原因：(5)油泵进、出油口接头或弯接头“O”形密封圈损坏，弯接头紧固螺栓或进、出油管螺母未上紧，空气进入液压系统；排除方法：更换O形密封圈，上紧接头处螺栓或螺母Rexroth0510765057AZPFF-1X-022/016RRR2020KB-SO023Rexroth0510725059AZPF1X022RQR12MBRexroth0510525018AZPF11014RCB20MB德国博世REXROTH力士乐齿轮泵:质量保证，货期稳定订货号/型号如下：0510425009AZPF-10-008RCB20MB0510525009AZPF-10-011RCB20MB0510525324AZPF-12-011LRR20MB0510625013AZPF-10-019RCB20MB0510425009AZPF-10-008RCB20MBR918PT0550AZPS-22-022RPR20MBR918C03771AZPS-11-008RCB20MBR918C02883AZPGF-11-038/004RCB2020MBR918C02771AZPGG-12-028/028LDC2020MBR918C02740AZPNF-11-032/014LDC0720KB-S0023R918C02614AZPNF-11-022/008RDC720KB-S0023R918C02598AZPNN-11-025/022RDC77KB-S0023R918C02594AZPNF-11-032/016RDC720KB-S0023R918C02591AZPNF-11-032/008RDC720KB-S0023R918C02478AZPF-10-022RSG20PB-S0012R918C02445AZPG-11-038LDC7KB-S0023R918C02440AZPN-11-025LDC7KB-S0023R918C02383AZPF-22-022LRR20MBR918C02381AZPF-21-022LFB20MBR918C02310AZPF-22-022RHO30KBR918C02301AZPG-11-038RDC7KB-S0023)