CB-46型齿轮式液压泵在使用中，有时会发生轴套卸荷槽凸台被相邻啮合齿端面磨损，造成液压泵高压腔向低压腔泄漏（内漏），致使液压系统建立不起正常工作压力。此故障主要是由于油泵轴套安装不到位或轴套外端面被杂物垫起，使轴套倾斜所致。对此，我们采取如下修理方法解决了问 CB-46 type gear hydraulic pump in use, sometimes occur sleeve boss relief groove adjacent tooth surface wear, causing the high-pressure pump cavity to the low-pressure chamber leakage (leakage), resulting in hydraulic system can not afford Normal working pressure This failure is mainly due to the installation of the pump shaft is not in place or the outer end of the sleeve was debris pad, so that the sleeve tilt. In this regard, we take the following repair method to solve the question