Caterpillar Monitoring System Caterpillar


Wiring Harness (Open Circuit) - Test

Usage:

D6R 1RW
断路是指使电流不流动的电路故障。 断路通常是由电气导线故障或电气接头连接不良引起的。 电气导线或连接断开时,电路中的电流就会中断流动。 常闭电路的电阻值应小于 5 欧姆。 下述步骤将说明断路测试:

参考: 有关完整的电气示意图,请参阅正在维修的机器的电气系统示意图。

测试有无断路。

  1. 确定可疑电路中的接头和导线编号。 使用机器的电气系统示意图检查电路。

  2. 将钥匙起动开关和断路开关转到 OFF 位置。

  3. 从配线线束上断开部件和 ECM。

  4. 在一个断开的线束连接上,将一根跨接导线连在可疑导线的触点与机架接地之间。

  5. 在其它机器线束接头上,使用万用表表笔测量可疑导线的触点与机架接地之间的电阻。

    预期结果:电阻小于 5 欧姆。

    正常 - 电阻小于 5 欧姆。 线束电路正常。

    停止。

    异常 - 电阻大于 5000 欧姆。 机器线束中存在断路。

    修理:修理或更换机器线束。

    停止。

Caterpillar Information System:

770, 772, 773F and 777F Off-Highway Truck/Tractors and 775F Quarry Truck Monitoring System Menu Navigation
777D Off-Highway Truck Truck Payload Measurement System (TPMS) - If Equipped
777D Off-Highway Truck Retarding
14M and 16M Motor Graders Hydraulic and Steering System Relief Valve (Steering Cylinder Crossover)
14M and 16M Motor Graders Hydraulic and Steering System Relief Valve (Steering Cylinder Crossover)
IT38H Integrated Toolcarrier and 938H Wheel Loader Engine Supplement Muffler - Remove and Install
12M, 140M and 160M Motor Graders Hydraulic and Steering System Relief Valve (Steering Cylinder Crossover)
770 and 772 Off-Highway Truck Hydraulic and Braking System Foot Brake Control (Service)
246C, 256C, 262C and 272C Skid Steer Loaders, 277C, 287C and 297C Multi Terrain Loaders and 279C, 289C and 299C Compact Track Loaders European Roading Manual Headlights - Adjust
D-Series and D2-Series Compact Track Loaders (CTL), Multi-Terrain Loaders (MTL), and Skid Steer Loaders (SSL) After Roading the Machine
246C, 256C, 262C and 272C Skid Steer Loaders, 277C, 287C and 297C Multi Terrain Loaders and 279C, 289C and 299C Compact Track Loaders European Roading Manual Operator Controls
246C, 256C, 262C and 272C Skid Steer Loaders, 277C, 287C and 297C Multi Terrain Loaders and 279C, 289C and 299C Compact Track Loaders European Roading Manual Before Roading the Machine
PL61 Pipelayer and D6K Track-Type Tractor Hydraulic Fan System
777D Off-Highway Truck Capacities (Refill)
770, 772, 773F and 777F Off-Highway Truck/Tractors and 775F Quarry Truck Monitoring System Service Menu
PL61 Pipelayer and D6K Track-Type Tractor General Information
PL61 Pipelayer and D6K Track-Type Tractor Connector Locations
C9 Engine for the 816F Series 2 Landfill Compactor, the 815F Series 2 Soil Compactor, and the 814F Series 2 Wheel Dozer Sensor Signal (Analog, Active) - Test
C9 Engine for the 816F Series 2 Landfill Compactor, the 815F Series 2 Soil Compactor, and the 814F Series 2 Wheel Dozer Sensor Signal (Analog, Passive) - Test
C9 Engine for the 816F Series 2 Landfill Compactor, the 815F Series 2 Soil Compactor, and the 814F Series 2 Wheel Dozer Speed/Timing - Test
C9 Engine for the 816F Series 2 Landfill Compactor, the 815F Series 2 Soil Compactor, and the 814F Series 2 Wheel Dozer Speed Control - Test
777F Off-Highway Truck Machine Systems Solenoid Valve and Manifold (Steering Disable) - Remove
2007/09/24 The Steering Column Is Improved {4338}
C4.4 (Mech) Industrial Engine Piston Cooling Jet
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.