正確更換液壓油的方法：


更換液壓油的傳統作法只是抽出液壓油箱內的液壓油，更換液壓油濾芯，再加注新液壓油。這種方法只能更換掉系統內48%的液壓油。而殘存在系統內的52%的臟油與新液壓油混合后，大大降低了液壓泵及其他元件的使用壽命。經沃爾沃挖掘機維修為例。系統內液壓油總量為500L，而液壓油箱內只有220L液壓油，如果只是更換液壓油箱內的液壓油，就只更換了系統內不到總量1/2的液壓油。現介紹可以更換掉系統內95%液壓油的方法如下:(1)將機器停放在平坦的地面上，拆下鏟斗，關閉發動機，拆下靠動臂一端的鏟斗缸油管接頭，并安裝堵頭。啟動發動機，慢慢抬起動臂，使鏟斗缸活塞桿在自重作用下慢慢伸出至鏟斗缸行程末端。鏟斗缸下腔的液壓油全部排出后，將挖掘機動臂和斗桿恢復到原來的位置。

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130-3212卡特發電機組先導濾芯點擊查看