D7G and D7G Series II Track-Type Tractors Engine Supplement Caterpillar


Crankshaft Front Seal and Wear Sleeve - Remove and Install

Usage:

D7G 7MB

拆卸步骤

Table 1
需要的工具    
工具     零件号     说明     数量    
A     1P-3075     滑锤拉拔器     1    
B     5P-7312     密封件破坏工具     1    
C     5P-7315     破坏工具环     1    

开始:

  1. 拆卸减振器和皮带轮。 有关待维护发动机的信息,请参阅解体与组装, "减振器和皮带轮 - 拆卸"。

注: 更换前密封件时一定要更换承磨衬套。




    图 1g00988251

    典型范例

  1. 使用工具 (A) ,拆卸曲轴前密封件 (1) 。



    图 2g00988254

  1. 将工具 (C) 安装到密封孔中。

  1. 将工具 (B) 安装到工具 (C) 与承磨衬套之间。

  1. 转动工具 (B) ,直到工具边缘使得承磨衬套产生了平的折痕。 在两个以上的部位进行本步骤,直到承磨衬套松动为止。

  1. 用手拆卸工具 (C) 和承磨衬套。

安装步骤

Table 2
需要的工具    
工具     零件号     说明     数量    
A     5P-7299     安装工具     1    
7F-8022 螺栓     1    
4B-4283 垫圈     1    
B     4C-9500     快速硫化底漆     1    
C     9S-3265     固定胶     1    

注: 必须同时安装承磨衬套和密封件。




    图 3g00988346

  1. 在密封唇和承磨衬套 (1) 外径上涂抹干净的发动机机油。 如图所示,将密封件装在承磨衬套上,密封唇朝向承磨衬套内径有圆角的一侧。



    图 4g00988347

  1. 使用工具 (B) ,除去承磨衬套内径 (X) 和曲轴表面 (Y) 上的机油。

  1. 在表面 (X) 和 (Y) 上涂抹工具 (C) 。

  1. 如图所示,将密封件和承磨衬套 (1) 装在曲轴上,密封唇朝向发动机。

  1. 如图所示,安装工具 (A) 。 在螺栓头与安装工具之间加润滑剂。

  1. 使用工具 (A) ,将密封件和承磨衬套 (1) 推到曲轴上。 推动安装工具,直到安装工具靠在曲轴端部。 承磨衬套和密封件现在处于正确位置。

  1. 拆卸工具 (A) 。

End By: 安装减震器和皮带轮。 有关待维护发动机的信息,请参阅 解体与组装, "减振器和皮带轮 - 安装"。

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