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油液流動阻力增加，液壓損失大，易形成油塞現(xiàn)象；回位機構(gòu)油路壓力降低，不能自動回位；閥門動作失靈等。為此應(yīng)注意

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正確選用液壓油的粘度。3）經(jīng)常清洗濾清器，防止堵塞。4）分配器手柄不應(yīng)長時間處于“提升”或“壓降”位置。

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如吸油管路油液流動緩慢形成真空，吸入空氣；油泵吸油不足，流入油缸的液壓油量不足，致使農(nóng)具提升緩慢

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防止液壓油溫度過低。液壓油溫度過低時，由于液粘度增加，將可能引起一些故障，

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防止液壓油溫度過高。在工作過程中，如果發(fā)現(xiàn)液壓沒溫度過高，必須及時查找原因加以排除，否則將產(chǎn)生如下不良影響和后果