Welding Precaution
为避免损坏发动机的 ECM、传感器和相关部件，必须采用的焊接步骤。 拆下需要进行焊接的部件。 如果不可能拆卸某个部件，当在配备电子控制模块 (ECM) 的发动机上进行焊接时必须按下面步骤进行操作。 本步骤对电子元件的危害程度最小。
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| 注意 |
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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。 |
- 使发动机停机。 断开 ECM 的电源。
- 把蓄电池负极电缆与蓄电池分开。 如果安装了蓄电池断路开关的话，应将此开关打开。
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图 1 g01143634 焊接操作指南（典型示图） - 将焊接接地电缆连接到尽量靠近将要焊接的区域。 可能会因焊接而损坏的部件包括轴承、液压部件和电气/电子部件。
- 保护导线线束，避免焊接碎屑和飞溅。
- 使用标准焊接法焊接材料。
Caterpillar Information System:
2006/10/09 New Ball Studs Improve the Service Life of the Steering Cylinders and the Steering Linkages {4303, 4305}
2006/10/30 An Improved Muffler is Now Available for Soil Compactors {1062}
2010/03/04 Orifices in the Brake Lines Improve the Performance of the Pressure Switches {1408, 4282, 4284}
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2006/11/27 The New Bevel Gears Improve Reliability {3159, 3256, 3258, 3270}
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246C, 256C, 262C and 272C Skid Steer Loaders Service Interval Chart
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277C, 287C and 297C Multi Terrain Loaders Final Drive Oil - Change
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2006/10/16 New Hose Clamps Are Used on the Air Induction System For Pneumatic Compactors {1071}
M313C, M315C, M316C, M318C and M322C Excavators and M318C and M322C Material Handlers Hydraulic System Position Switch (Service Brake Pedal) - Adjust
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