东方红-75拖拉机上的水泵水封的保养要求是:经常检查水封处是否漏水,若漏水可上紧水封螺母,但是不要拧得太紧。若上紧水封螺母后还是漏水,就应更换水封。目前有些拖拉机手,当发现水封处漏水时,就往水泵轴后衬套上的黄油嘴里打黄油,漏水越严重打的黄油越多,直到不漏水为止。轴与套之间充满了黄油,似乎是堵住了水泵里 Dongfanghong -75 tractor pump seal on the maintenance requirements are: always check whether the water seal leaks, if leakage can tighten the seal nut, but do not over-tighten. If you tighten the seal nut is still leaking, it should be replaced seal. At present, some tractor hands, when it is found that the water seal at the leak, go to the pump shaft bush grease on the butter, the more serious the leaking butter, until it is leaking. Between the shaft and the sleeve is full of butter, seems to be blocked in the pump