C4.4 Engines for Caterpillar Built Machines Caterpillar


Piston Cooling Jets - Remove and Install

Usage:

C4.4 2W2

拆卸步骤

表 1
所需工具 
工具  零件号  零件描述  数量 
A(1)   9U-6198  曲轴转动工具 
A(2)   9U-7336  壳体 
5P-7305 发动机盘车工具 
(1) 曲轴转动工具用于前皮带轮。
(2) 该工具在电动起动马达的孔上使用。

开始:

  1. 拆下发动机机油泵。 有关正确的步骤,请参阅拆解和组装, "发动机机油泵 - 拆卸"。

注: 可以使用两个工具 (A) 中的任意一个。 请使用最适用的工具。


注意

保持所有零件清洁无杂质。

杂质会造成快速磨损和缩短部件寿命。


  1. 如果安装了曲轴,使用工具 (A) ,转动曲轴,以便可以接近活塞冷却喷嘴。


    图 1g03685913

  2. 将螺栓 (1) 和活塞冷却喷嘴 (2) 从缸体上卸下。

  3. 重复步骤 1 至步骤 2 以拆下其余活塞冷却喷嘴。

安装步骤

表 2
所需工具 
工具  零件号  零件描述  数量 
A(1)   9U-6198  曲轴转动工具 
A(2)   9U-7336  壳体 
5P-7305 发动机盘车工具 
(1) 曲轴转动工具用于前皮带轮。
(2) 该工具在电动起动马达的孔上使用。

注: 可以使用两个工具 (A) 中的任意一个。 请使用最适用的工具。


注意

保持所有零件清洁无杂质。

杂质会造成快速磨损和缩短部件寿命。




    图 2g03685913

  1. 清洁活塞冷却喷嘴,检查活塞冷却喷嘴是否损坏。 确保气门在每个活塞冷却喷嘴内自由移动。 更换所有损坏的活塞冷却喷嘴。 有关活塞冷却喷嘴检查步骤的详细信息,请参阅技术规格, "活塞冷却喷嘴定位"。

  2. 如果安装了曲轴,使用工具 (A) ,转动曲轴,以便可以接近活塞冷却喷嘴的安装法兰。

  3. 将活塞冷却喷嘴 (2) 安装到缸体的机油通道中。

    注: 拧紧螺栓之前,确保活塞冷却喷嘴正确安装在缸体的机油通道中。

  4. 安装螺栓 (1)。 拧紧螺栓至扭矩为 9 N·m (80 lb in)

  5. 重复步骤 2 至步骤 3,安装其余活塞冷却喷嘴。

结束:

  1. 安装发动机机油泵。 有关的正确步骤,请参阅拆解和组装, "发动机机油泵 - 安装"。

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