572R Series II Pipelayer Hydraulic System Caterpillar


Boom Kickout Valve - Test and Adjust

Usage:

572R II DSC

简介

动臂限位阀确保动臂不会垂直升高。 当动臂接近垂直时,动臂上的横梁应与柱塞接触。 柱塞将启动动臂限位阀,且绞盘应停止。

测试步骤

  1. 把机器开到平整水平的地方。 移到远离工作的机器和人员的地方。

  2. 机器上仅允许留一位操作员 让其他所有人员远离机器或在操作员的视野范围内。

  3. 将变速箱置于空档位置。

  4. 接合停车制动器。

  5. 在低怠速位置运转发动机。

  6. 缓缓升起动臂。

    注: 当动臂接近垂直时,动臂上的横梁应接触柱塞。 柱塞应驱动动臂限位阀,且绞盘应停止转动。

  7. 如果绞盘不停止,请执行调整步骤。

调整步骤



    图 1g01297153
    (1) 阀
    (2) 柱塞
    (3) 左吊管机架
    (4) 螺栓
    (A) 13 cm (5.1 inch)

  1. 从左吊管机架 (3) 上拆下盖板。

  2. 松开将阀 (1) 安装到机架的螺栓 (4)。 阀 (1) 应能够通过安装支架上的开槽孔自由移动。

  3. 调整阀 (1),使尺寸 (A) 为 13 cm (5.1 inch)。 此为阀 (1) 上的支重轮和柱塞 (2) 之间的距离。

  4. 拧紧螺栓 (4)。

  5. 重复测试步骤。 如果绞盘不停止,则将阀 2 mm (0.08 inch) 移至靠近柱塞。

  6. 重复步骤 5,直到当动臂靠近垂直方向时绞盘停止为止。

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