3126B Petroleum Engine Caterpillar


Welding on Engines with Electronic Controls

Usage:

3126B Z2A


注意

由于机架的强度可能会降低,一些制造厂商建议不要在机架或导轨上进行焊接。 有关在机架或导轨上焊接的问题,请向原设备制造商(OEM)或卡特彼勒代理商咨询。


正确的焊接程序是必要的,这样可以避免损坏发动机ECM、传感器和相关部件。 如果可能,从装置上拆下部件,然后再焊接部件。 如果不可能拆卸某个部件,当焊接卡特彼勒电控发动机上的装置时必须按下面步骤进行操作。 下面程序被认为是部件上焊接的最安全的程序。 该程序应该提供电控部件损坏的最小风险。


注意

不要将电焊机的地线接至电气部件如电子控制模块(ECM)或传感器上。 不正确的接地方式能对传动系轴承、液压元件、电气部件和其它部件造成损坏。

用焊接机的地线夹子夹住要焊接的组件。 尽可能将夹子置于焊接点附近。 这将有助于减少损坏的可能性。


  1. 停止发动机。 把开关控制的电源转到关闭位置。

  1. 在没有爆炸危险的区域来进行焊接作业。

  1. 将蓄电池负极电缆从蓄电池上断开。 如果提供了蓄电池断开开关,打开开关。

  1. 从ECM处断开J1/P1和J2/P2插头。 将线束移动到不允许线束意外向回移动并与ECM针脚接触的位置。



    图 1g00765012

    使用上面实例。 从电焊机到电焊机接地夹子的电流不会损坏任何相关部件。

    (1) 发动机

    (2) 焊条

    (3) 钥匙开关处于“关闭(OFF)”位置。

    (4) 蓄电池断开开关处于断开位置

    (5) 断开蓄电池电缆

    (6) 蓄电池

    (7) 电气/电子部件

    (8) 焊接的部件与任何电气/电子部件之间的最大距离

    (9) 要焊接的部件

    (10) 电焊机的电流通路

    (11) 电焊机的接地夹子

  1. 将焊接接地电缆直接连接到要焊接的部位。 将接地电缆尽可能地靠近焊接点,以减少焊接电流损坏轴承、液压部件、电气部件及接地带。

    注: 如果电气/电子部件用作电焊机接地,或位于电焊机接地与焊接点之间,则来自电焊机的电流就会严重地损坏部件。

  1. 保护线束,避免焊接碎片和溅污。

  1. 使用标准焊接惯例来焊接。

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