324D, 325D, 326D and 329D Excavators and 329D MHPU Mobile Hydraulic Power Unit Machine Systems Caterpillar


Load Control Valve (Boom Cylinder) - Disassemble

Usage:

325D L A3R

拆卸步骤

开始:

  1. 拆下动臂下降控制阀。 请参阅拆解和组装, "动臂下降控制阀 - 拆卸"。


注意

保持所有零件清洁无杂质。

液压系统被异物污染会缩短液压系统部件的使用寿命。

为了避免污染物进入液压系统,总要在断开后塞住或盖住管路、管接头或软管。 罩住已解体的部件,然后在组装前正确清洁它们。

在更换任何主部件后,或特别是在部件故障后,正确清洁液压系统,以便去除全部污染物。




    图 1g01219462

  1. 拆下螺栓 (1)。

  2. 从安全阀 (3) 上拆下先导阀 (2)。

  3. 拆下 O 形密封圈 (4)。


    图 2g01219487

    ------ WARNING! ------

    弹簧加压的零件和/或盖板可能导致人身伤害。

    拆卸盖板时弹簧力将被释放。

    松动螺栓时做好准备把持住弹簧加载的盖板。


  4. 从先导阀 (4) 上拆下螺塞 (5) 和 O 形密封圈 (6)。

  5. 拆下螺栓 (8)。

  6. 拆下盖 (9)。

  7. 拆下 O 型密封圈 (7)。

  8. 拆下导向器 (10)、垫片 (11)、弹簧 (12) 和导向器 (13)。

  9. 拆下弹簧 (14) 和导向器 (15)。


    图 3g01219520

    ------ WARNING! ------

    弹簧加压的零件和/或盖板可能导致人身伤害。

    拆卸盖板时弹簧力将被释放。

    松动螺栓时做好准备把持住弹簧加载的盖板。


  10. 将螺母 (16)、螺塞 (17)、O 形密封圈 (18)、基座 (19) 和滚珠 (21) 从安全阀 (3) 上拆下。

  11. 拆下螺栓 (29) 和盖 (30)。

  12. 拆下导向器 (26)、弹簧 (27) 和阀 (28)。

  13. 拆下导向器 (31)、环 (32)、O 形密封圈 (33)、弹簧 (34) 和阀 (35)。

  14. 拆下螺塞 (20) 和 O 形密封圈 (22)。

  15. 拆下螺塞 (24) 和 O 形密封圈 (23)。

  16. 拆下阀 (25)。

  17. 拆下 O 形密封圈 (36)。


    图 4g01219592

  18. 将 O 形密封圈 (38)、 (39)、 (40)、 (41) 和 (43) 从阀 (25) 上拆下。 拆下备用环 (37) 和 (42)。

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