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35、为什么会出现机油温度比水温高的故障? 答:按照拖拉机的使用要求,机油温度应该比水温低5℃左右。一般机油温度应在70～90℃之间,冷却水的温度应在75～95℃之间。油温高了,会使机油丧失应有的粘度,使需润滑的配合件之间难以保持一定的油膜厚度,增加磨损;油温高了,还会加快机油老化变质的速度,减少机油的使用寿命。使用中有个别拖拉机机油温度比水温高。高一点尚可使用,当超过5～10℃时便应视为故障,需找出原因,予以排除。通常机油温度比水温高的原因有以下几点:
35, why there will be oil temperature higher than the water temperature fault? A: According to the tractor requirements, the oil temperature should be lower than the water temperature about 5 ℃. General oil temperature should be between 70 ~ 90 ℃, cooling water temperature should be between 75 ~ 95 ℃. Oil temperature is high, will make the oil loss due viscosity, make the parts to be lubricated difficult to maintain a certain thickness of the film, increasing wear and tear; high oil temperature, but also accelerate the deterioration of oil aging rate, reduce the use of oil life. There are individual tractors used in the oil temperature is higher than the water temperature. Higher can still be used, when more than 5 ~ 10 ℃ should be considered as failure, to find out the reasons to be ruled out. The oil temperature is usually higher than the water temperature for the following reasons: