C3.4B Engines for Caterpillar Built Machines Caterpillar


Cleanliness of Fuel System Components

Usage:

CD-44B 398

发动机清洁度


注意

在燃油系统上工作时保持极端的清洁度是至关重要的,因为微小的颗粒物都可能会导致发动机或燃油系统故障。


使用高压水系统对发动机进行整体清冼。 开始维修燃油系统前,清洗发动机可以去除污垢和松散的碎屑。 确保没有高压水喷向喷油器或电气接头的密封。

环境

如有可能,应向维护区加压。 确保部件不会受到悬浮在空气中的污物和碎屑污染。 从系统上拆卸部件时,必须立即用适合的密封塞堵住暴露的燃油连接。 只有在重新连接部件时,才能取下密封塞。 不得重复使用密封塞。 使用后,立即废弃密封塞。 请联系最近的 Caterpillar 代理商,以获取适当的密封塞。

新部件

高压管是不能重新使用的。 新高压管的设计只允许安装在一个位置。 更换高压管时,不得弯曲或扭结新管。 管的内部损坏可能导致金属微粒被吸入燃油中。

所有新的燃油滤清器、高压管、管组件和部件都附带各自的密封塞。 只有在安装新零件时,才能取下密封塞。 如果新的部件没有随附密封塞,则不应使用该部件。

技术人员必须戴上适当的橡胶手套。 修理完成后应立即处置橡胶手套,以免污染系统。

加油

在向柴油箱加油之前,必须清除加油泵和燃油箱盖组件上的所有污垢和碎屑。 只有在环境状况不受到灰尘、风、雨的干扰时才能加油。

只使用未受污染的燃油。 必须使用超低硫柴油 (ULSD)。 超低硫柴油 (ULSD) 的含硫量必须低于 15 PPM 0.0015%。

可以使用生物柴油。 清洁的生物柴油必须符合最新的 "EN14214 或 ASTM D6751"(在美国)。 生物柴油仅可与符合最新版的 "EN590 或 ASTM D975 S15" 指示的合格矿物柴油混合,混合体积比达到 20%。

在美国,B6 至 B20 混合生物柴油必须符合最新版 "ASTM D7467" 中所列的要求(B6 至 B20),并且 API 重度必须为 30-45。

有关更多信息,请参阅操作和保养手册, "油液建议"。

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