776D, 777D and 777D HAA Off-Highway Trucks Machine Systems Caterpillar


Front Suspension (Cylinder) - Install

Usage:

776D AFS

安装步骤

表 1
所需工具 
工具  零件号  零件说明  数量 
148-0357  支杆提升总成 
3R-2299  螺栓 
138-7576  连杆支架 
194-7586  气动扳手总成 
194-7886  驱动延伸件 
2P-2334  套筒 
7S-5437  充氮总成 

注: 检查所有 O 形密封圈和部件有无磨损或损坏。 如有必要,请更换部件。 利用正要密封的润滑剂稍微润滑所有 O 形密封圈。 利用不起毛的抹布擦拭所有部件。



    图 1g00714263


    图 2g00714266

    注: 只有当悬挂油缸水平放置时才要求步骤 1 至 4。

  1. 在移动前悬挂油缸前,先确认两个销 (14) 和开口销安装在了工具 (A) 上。


    图 3g00701301

  2. 将工具 (B) 固定到前悬挂油缸 (9) 上和前轮 (12) 上。 将适当的吊索放置到工具 (B) 上。 将吊索固定到适当的举倾机构上。 将前悬挂油缸 (9) 和心轴 (10) 作为一个组件升起至垂直位置。

  3. 将两个销 (14)(未显示)和开口销从工具 (A) 上拆下。


    图 4g00714268

  4. 将前悬挂油缸 (9) 和心轴 (10) 作为一个组件放置在工具 (A) 的底座上,如图所示。 安装八个螺栓 (13)。 将工具 (B) 从前悬挂油缸 (9) 和前轮 (12) 上拆下。


    图 5g00700058

  5. 将键 (11) 安装到机架组件上。


    图 6g00714270

  6. 使用工具 (A) 和适当的升降机将前悬挂油缸 (9) 和心轴 (10) 作为一个组件提升到适当的位置。 安装将前悬挂油缸 (9) 固定在机架组件上的 16 个螺栓 (8)、垫圈和全螺纹螺母。 使用工具 (C)(未显示)拧紧全螺纹螺母至扭矩为 1173 ± 47 N·m (865 ± 35 lb ft)


    图 7g00700055

    注: 如果移动发动机进行维修,则发动机和管组件必须在安装垫片 (5) 之前安装。 安装垫片 (5) 之前,必须在主机架下方使用两个千斤顶均匀地支撑机器各侧。

  7. 将垫片 (5) 放置在机架组件上。 安装四个螺栓 (6)、硬垫圈和垫圈。

  8. 连接软管组件 (7)。


    图 8g00700054

  9. 将线束 (4) 连接到电气接头上。


    图 9g00700050

  10. 如图所示,将适当的吊索绕转向臂 (3) 安置。 将吊索固定到适当的举倾机构上。 将转向臂 (3) 提升到心轴上的适当位置。 安装四个螺栓 (2) 和硬垫圈。


    图 10g00700051

  11. 将软管组件 (1) 连接到前钳式行车制动器上。

  12. 使用工具 (D)(未显示)向前悬挂油缸充油。 请参阅悬挂油缸,系统操作、测试和调整, "悬挂油缸(前)-排气和充气"。

  13. 把空气从制动器系统中排除出去。 请参阅测试和调整, "制动系统空气 - 排除"。

结束:

  1. 安装前轮胎和轮辋。 请参阅拆解和组装, "轮胎和轮缘(前) - 拆卸和安装"。

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