空氣濾芯的作用：
空氣濾濾芯設在油箱上，是油箱的“口罩”，具有防止污物由于油量變化=而隨空氣混入油箱的功能，因此該濾器選用濾芯要具有其他液壓濾芯同等性能要求。其濾芯容量要大，以防止微孔堵塞使油箱內壓變成負壓而引起空穴現象。在露天場合和周圍環境惡劣時尤其要注意空氣濾的保護。

使用空氣濾的方法是：直接將下部插入油箱，上蓋底端面有一周小孔，是空氣進口，插入油箱部分是過濾層

142-1339卡特挖掘機空氣濾芯應用案例

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142-1339卡特挖掘機空氣濾芯應用案例