320D and 323D Excavators Hydraulic System Caterpillar


Swing Speed and Overswing on Level Ground - Check

Usage:

320D A6F
测量机器的回转速度和回转过量可以确定是否需要检查回转马达或反作用阀。 精细回转控制开关(如有配备)必须处在断开位置。

注: 发动机转速和 / 或测试期间所用的机器配置可能对测试结果产生影响。 有关此项测试所用的发动机转速,请参阅测试和调整, "发动机性能 - 测试(发动机转速)"。 有关此项测试所用的机器配置,请参阅测试和调整, "操作检查"。

注: 执行操作检查之前,必须根据卸压阀压力技术规范设定卸压阀压力。 请参阅测试和调整, "技术规范"。

表 1
所需工具 
说明  数量 
卷尺 
秒表 


图 1g00297618

  1. 将机器停放在水平地面上。 参考图 1。

  2. 停止发动机。


    图 2g00293972
    (A) 上部机架
    (B) 底盘机架
    (C) 标记

  3. 为了指示这两个位置之间的关系,在回转轴承的内座圈和外座圈上作一个标记 (C)。 标记用于使回转操作停止的目标。 参考图 2。

  4. 铲斗应空载。

  5. 向任一方向移动回转操纵手柄,直到机器完成一次远离目标的 180 度回转操作。

  6. 向任一方向移动回转操纵手柄,直到机器完成一次朝向目标的 180 度回转操作。 将回转操纵手柄移回目标处的空档位置。

  7. 测量回转轴承上标记之间的距离,获得回转过量的量。 参考图 2。

    注: 使用从操作员座椅处可以看见的一点作为目标参考点。

    表 2
    回转过量 
    项目    翻新  维修极限 
    向右回转  1100 mm (43.3 inch)或以下  1200 mm (47.2 inch)或以下  1400 mm (55.1 inch)或以下 
    向左回转 

  8. 向各方向移动回转操纵手柄,测量完成一次 180 度回转操作所需的时间。

    表 3
    回转时间 
    项目    翻新  维修极限 
    向右回转  5.1 秒或更少  5.5 秒或更少  6.1 秒或更少 
    向左回转 

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