C18 Marine Engine Caterpillar


Zinc Rods - Inspect/Replace

Usage:

C18 J2K
海水回路腐蚀可能导致冷却系统部件的早期损蚀,渗漏和可能出现的冷却系统污染。

在发动机海水冷却系统中插装锌棒来防止盐水的腐蚀作用。 锌与海水反应导致锌棒损蚀。 锌棒替代冷却系统的更为关键的发动机零件而受损蚀。 锌棒的快速氧化耗损可能说明存在不受控的来自未正确安装的电气附件或未正确接地的电气附件的电流。

锌棒必须在适当的周期进行检查。 锌棒必须在出现损蚀时予以更换。 在用海水加注铅管的最初 24 小时内,检查锌棒。 如果注意到没有腐蚀迹象,则每周检查锌棒或每 50 工时数后检查锌棒。

注: Caterpillar 要求每隔 50 工时数检查一次锌棒,直到确定磨损率。

锌棒位置

不同发动机,锌棒的数量和位置可能会不同。




图 1g01937139

油冷却器内可能有一条或两条锌棒。




图 2g01937142

辅助水泵顶部可能有一条锌棒。




图 3g01937141

热交换器进口处可能有一条锌棒。 热交换器出口处可能有一条锌棒。




图 4g02151421

燃油冷却器内可能有一条锌棒。




图 5g01958134

发动机顶部视图

管路总成内可能有一条锌棒。

检查锌棒

  1. 拆下锌棒。



    图 6g00104048

  1. 用锤子轻微敲击锌棒。 如果锌棒已经损蚀,或锌棒成片剥落的话,应安装新锌棒。

更换锌棒




    图 7g00104049

  1. 将旧锌棒拧下来或将锌棒从旋塞上钻凿下来。 清洁螺塞。

  1. 在新锌棒的凸肩上涂抹 9S-3263 固定胶 。 只在锌棒的凸肩上涂覆固定胶。 把锌棒安装在螺塞中。

  1. 在螺塞的外螺纹上涂覆 5P-3413 管道密封剂 。 安装锌棒。 有关扭矩技术参数的更多信息,请参考技术参数手册。

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