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油液流动阻力增加，液压损失大，易形成油塞现象；回位机构油路压力降低，不能自动回位；阀门动作失灵等。为此应注意

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正确选用液压油的粘度。3）经常清洗滤清器，防止堵塞。4）分配器手柄不应长时间处于“提升”或“压降”位置。

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如吸油管路油液流动缓慢形成真空，吸入空气；油泵吸油不足，流入油缸的液压油量不足，致使农具提升缓慢

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防止液压油温度过低。液压油温度过低时，由于液粘度增加，将可能引起一些故障，

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防止液压油温度过高。在工作过程中，如果发现液压没温度过高，必须及时查找原因加以排除，否则将产生如下不良影响和后果