C3.3B Engines for Caterpillar Built Machines Caterpillar


Idler Gear - Remove and Install

Usage:

236D BGZ

拆卸步骤

表 1
所需工具 
工具  零件号  零件描述  数量 
390-1135  惰轮工具 

开始:

  1. 拆下后壳体。

注: 参考技术规格, "发动机设计",了解非指定的发动机扭矩值。


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。



注意

在检验、保养、测试、调整及维修产品时,务必留心,确保液体盛装在容器中。 在打开任何腔室或拆解任何储有液体的部件之前,要准备好用合适的容器收集液体。

按照本地法规和指令处置所有液体。




    图 1g02795977


    图 2g02795978


    图 3g02795981
    正时标记的对准

  1. 找到 4 号活塞的上止点。 请参阅测试和调整, "找到 4 号活塞上止点"。

  2. 确保凸轮轴齿轮和曲轴齿轮上的正时标记 (X) 对准。 参考图 1。

  3. 确保惰轮和凸轮轴齿轮上的正时标记 (Y) 对准。 参考图 2。

  4. 确保惰轮和喷油泵齿轮上的正时标记 (Z) 对准。 参考图 3。


    图 4g02795984

  5. 将螺栓 (2)、垫圈 (3) 和惰轮轴从惰轮 (1) 上拆下。 拆下惰轮 (1) 和垫圈。


    图 5g02795985

  6. 使用工具 (A) 将惰轮轴承 (4) 从惰轮 (1) 上拆下。

安装步骤

  1. 按与拆卸相反的顺序安装惰轮 (1)。

    1. 拧紧螺栓 (2) 至扭矩为 49 to 55 N·m (36 to 41 lb ft)

    2. 确保齿轮、缸体表面和惰轮 (1) 清洁,没有磨损或损坏。 如有必要,更换所有磨损或损坏的部件。

    3. 使用清洁的发动机机油润滑惰轮轴承表面 (4)。

    4. 检查惰轮轴和惰轮轴套之间的机油间隙。 参考技术规格, "齿轮总成(前部)",了解允许间隙。

    5. 检查惰轮轴套的惰轮轴外径和内径。

Caterpillar Information System:

HVOF Identifier 396-9342 Group{0599, 0669, 0679, 7000} HVOF Identifier 396-9342 Group{0599, 0669, 0679, 7000}
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