拖拉机的液压泵使用维修不当,就会出现各种故障,影响农时,因此,正确的使用维护液压泵,是延长其使用寿命,保证工作稳定、灵敏和可靠的重要保证。 液压泵经过长期工作后,橡胶油封常见问题是老化变硬而失去弹性,使低压油腔和高压油腔之间失去密封作用;同时油泵轴套和齿轮端面产生磨损,造成卸压密封圈的压缩量变小,性能变坏。因此油泵内出现高压腔向低压腔渗漏(一般称为“内漏”),而降低油泵压力和生产 Tractor hydraulic pump improper use of maintenance, there will be a variety of failures that affect farming time, therefore, the proper use of maintenance pump is to extend its service life, to ensure that the work of an important guarantee of stability, sensitivity and reliability. After long-term work of the hydraulic pump, the common problem of the rubber oil seal is that the aging hardens and loses its elasticity, so that the seal between the low-pressure oil chamber and the high-pressure oil chamber loses its sealing effect. At the same time, the oil pump sleeve and the gear end face wear and tear, The amount of smaller, worse performance. As a result, a high-pressure chamber leaks into the low-pressure chamber (commonly referred to as an “internal leak”) in the pump, reducing pump pressure and producing