299D2 and 299D2 XHP Compact Track Loaders, 297D2 and 297D2 XHP Multi Terrain Loaders and 272D2 and 272D2 XHP Skid Steer Loaders Power Train Caterpillar


Piston Motor (Hydrostatic) - Remove and Install - 2 Speed

Usage:

272D2 BL2

拆卸步骤

表 1
所需工具 
工具  零件号  零件描述  数量 
444-0526  气动/液压千斤顶 
8S-7631  管 
283-1495 触针 
8S-7640 台架 
304-8950  管组件 
304-8951  台车 
386-6031  操纵杆滚轮举倾机构 
8S-7631  管 
283-1495 台架 
8S-7615 触针 
8S-8048 鞍座 
Loctite598 
Loctite516 
Loctite8009 


    图 1g02825077

  1. 升起提升臂,并定位油缸锁 (1)。

  2. 倾斜驾驶室。


    图 2g03699587

  3. 拆下螺塞 (4) 并排放传动链条箱中的机油。 请参阅操作和保养手册, "传动链条箱油 - 更换",以了解正确的排放和加注步骤。

  4. 拆下螺栓 (2) 和板 (3)。


    图 3g01326401

  5. 利用工具 (A) 升起机器侧面。 定位适当的垫块,以便支撑机器的侧面。 对机器后部重复上述步骤。


    图 4g03699589

  6. 松开前桥螺栓 (5),以便释放链条张力。 对后桥螺栓重复此步骤。


    图 5g01326516
    典型示例


    图 6g03775126


    图 7g03775163

  7. 将工具 (B) 和工具 (F) 定位到机器两侧。 将管组件 (C)、台车 (D) 和工具 (E) 定位到工具 (B) 和 (F) 上。 将活塞马达 (8) 连接到工具 (E) 上。 活塞马达 (8) 的重量约为 50 kg (110 lb)

  8. 断开软管组件 (6) 和 (7)。 断开未显示的线束。


    图 8g03699597

  9. 拆下螺栓 (9) 和护圈 (10)。 拆下螺栓 (11)。 拆下链轮 (12) 和活塞马达 (8)。

    注: 活塞马达和链轮将同时拆下。



    图 9g03740700

  10. 将 O 形密封圈 (13) 和隔套 (14) 从活塞马达 (8) 上拆下。

安装步骤

  1. 按与拆卸相反的顺序安装活塞马达 (8)。

    1. 向板 (3) 的配合面以及螺栓 (2) 的螺栓孔上涂覆一条连续的工具 (G)。

    2. 拧紧螺栓 (2) 至扭矩为 40 ± 4 N·m (30 ± 3 lb ft)

    3. 将工具 (H) 涂抹到螺塞 (4) 的螺纹上。

    4. 拧紧塞 (4) 至扭矩为 45 ± 5 N·m (33 ± 4lb ft)

    5. 拧紧驱动链条。 请参阅操作和保养手册, "驱动链条张力 - 检查/调整"。


      图 10g03727163

    6. 按图 10 所示的数字顺序,将螺母 (5) 拧紧至扭矩为 160 ± 15 N·m (118 ± 11 lb ft)。 按图 10 所示的数字顺序,将螺母 (5) 额外转动 60°± 5°。


      图 11g03727167

    7. 将工具 (J) 涂覆到螺栓 (11) 的垫圈上。

    8. 对于带 12 螺栓模式的马达,请按图 11 所示的紧固顺序拧紧。 用手拧紧螺栓 (11)。 按图 11 所示的数字顺序,将螺栓拧紧至扭矩为 40 ± 20 N·m (30 ± 15 lb ft)。 按图 11 所示的数字顺序,将所有螺栓 (11) 拧紧至扭矩为 190 ± 15 N·m (140 ± 11 lb ft)

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