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现象1:发动机低转速运转时,机油压力正常,当发动机转速增加时,机油压力反而有所降低,甚至机油压力表针指到零。分析:这一现象的产生,大多数是由于回油阀密封不良或弹簧折断所引起。现象2:机油压力表指针颤动,压力忽高忽低。分析:这一现象的产生,多是由于下述原因而引起的:在安装回油阀弹簧时,弹簧弯曲,与孔壁相碰,使弹簧不能随着主油道的压力变化而自由伸缩。在这
Phenomenon 1: engine low speed operation, the normal oil pressure, when the engine speed increases, the oil pressure but decreased, or even the oil gauge needle to zero. Analysis: The majority of this phenomenon is caused by poor sealing of the return valve or spring breakage. Phenomenon 2: Oil pressure gauge pointer tremor, the pressure fluctuated. Analysis: This phenomenon is mostly caused by the following reasons. When installing the return valve spring, the spring bends and collides with the hole wall, so that the spring can not freely expand and contract with the pressure change of the main oil passage. At this