3612 and 3616 Fast Vessel Engines Caterpillar


Zinc Rods - Inspect/Replace

Usage:

3616 1FN
海水回路內的腐蝕可能會造成下列問題: 冷卻系統組件提早惡化 , 漏油 和 可能的冷卻系統污染 . 這種銹蝕可能由於在海水系統中沒有鋅連桿引起的。

在引擎的海水冷卻系統中安裝鋅連桿,有助於防止由海水引起的生鏽氧化。 透過鋅連桿和冷卻系統組件的接觸會產生電流。 鋅連桿比冷卻系統組件更易氧化。 鋅連桿的快速惡化表示不當的接地電氣配件,或接地不當引起不可控制的電流。

駕駛員必須判定檢查鋅連桿的週期。 檢查加鋅連桿的時間間隔將取決於安裝的連桿尺寸和數量。

表1
鋅連桿的位置 
位置  數量 
輔助水泵的彎頭 
後冷器的彎頭 

檢查鋅連桿

  1. 拆除鋅連桿。

  2. 檢查鋅連桿。

    請確認鋅連桿在下次計畫檢查前一直維持在有效狀態下。

    1. 如果鋅連桿過度惡化,請安裝一個新的。


      插圖 1g00481100

    2. 用槌子輕敲鋅連桿。 如果鋅連桿斷裂,則安裝一個新的。

  3. 如果要重新使用該鋅連桿,則安裝前應刮去上面的氧化層。 這種氧化層會降低鋅連桿的效力。

更換鋅連桿

  1. 用鉗子把舊的鋅連桿從塞子裏旋出來。

    如果沒剩下足夠的材料或鋅連桿已斷裂,就從活塞鑽除鋅。

  2. 清潔螺塞。


    插圖 2g00748510
    (1) 肩部
    (2) 螺紋
    (3) 螺塞的外紋

    附註請勿在鋅連桿 (2) 的螺紋上塗抹黏著劑或密封劑。

  3. 在新的鋅連桿的肩部 ( 1)上塗抹 9S-3263 螺紋防鬆劑。 這種化合劑只能塗在鋅連桿的肩部上。 安裝鋅連桿在螺塞上。

  4. 5P-3413 管密封膠 塗抹塞子 (3) 的外部螺紋。 安裝鋅連桿。 有關鎖緊螺塞轉矩,請參閱 技術規格, RENR3130, "轉矩技術規格"。

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