故障原因：(6)油泵内漏，密封圈老化；排除方法：更换密封圈故障原因：(7)油泵端面或主、从动齿轮轴套端面磨损或刮伤，两轴套端面不平度超差；排除方法：更换磨损齿轮油泵或油泵轴套，磨损轻微时平板上将端面磨平整。其不平度允许误差0.03mm；上轴套端面低于泵体，上平面(正常值低于2.5~2.6mm)，如超差时应下轴套加0.1~0.2mm铜片来补偿，安装时则应套后轴套上装入故障原因：(8)油泵内部零件装配错误造成内漏；排除方法：卸荷片和密封环必须装进油腔，两轴套才能保持平衡。导向钢丝弹力应能同时将上、下轴套朝从动齿轮旋转方向扭转一微小角度，使主、从动齿轮两个轴套加工平面紧密贴合；轴套上卸荷槽必须装低压腔一侧，以消除齿轮啮合时产生***闭死容积；压入自紧油封前，应其表面涂一层润滑油，还要注意将阻油边缘朝向前盖，不能装反；装泵盖前，须向泵壳内倒入少量液压油，并用手转动啮合齿轮0510525324AZPF-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-S0023R918C02300AZPN-11-032RDC7KB-S0023R918C02298AZPN-11-028RDC7KB-S0023R918C02295AZPN-11-022RDC7KB-S0023R918C02293AZPF-11-022RRR20KB-S0023)