Varistor - Test
Show/hide table
 | |
| 图 1 | g00935223 |
PMPE 发电机 2400、2500、2800和2900机架线路图 (CR1-CR6) 二极管 (CR7) 可变电阻 (L1) 励磁机磁场(定子) (L2) 励磁机电枢(转子) (L3) 主磁场(转子) (L4) 主电枢(定子) (L5) 副励磁电枢 (PM) 永磁铁 (RFA) 旋转磁场组件 (CST) 用户提供的变压器 | |
Show/hide table
 | |
| 图 2 | g00935224 |
PMPE 发电机 2600机架线路图 (CR1-CR6) 二极管 (CR7) 可变电阻 (L1) 励磁机磁场(定子) (L2) 励磁机电枢(转子) (L3) 主磁场(转子) (L4) 主电枢(定子) (L5) 副励磁电枢 (PM) 永磁铁 (RFA) 旋转磁场组件 (CST) 用户提供的变压器 | |
欧姆表
可用欧姆表检查可变电阻 (CR7) 。 将欧姆表跨接在可变电阻上。 电阻值最小应为15000欧。 若电阻值小于15000欧，则该电阻坏了。
测试灯
Show/hide table
 | |
| 图 3 | g00555113 |
测试灯 | |
参见插图中所示的测试灯 3。 按下列步骤测试可变电阻：
- 断开可变电阻 (CR7) 上的引线。
- 将测试灯跨接在可变电阻上。
- 观察结果。 灯不应该亮。
- 将测试灯反接。
- 观察结果。 灯不应该亮。
如果在任一方向测试灯亮了，则可变电阻有短路。 用具有同等工作性能的变阻器更换有故障的变阻器。 当订购可变电阻更换件时应提供如下信息：
- 可变电阻的零件号
- 发电机的序列号
更换可变电阻后，要核实磁场绕组引线的捆带是否牢牢绕在轴上。 同时也要核实磁场绕组引线的捆带是否系紧。
Caterpillar Information System:
3306C Engines for Caterpillar Built Machines Alternator and Regulator
545 Wheel Skidder Power Train Bottom Guard (Rear Axle) - Remove and Install
988G Wheel Loader Steering Cylinder Bearings - Lubricate
950F Wheel Loader and 950F Series II Wheel Loader Hydraulic System General Information
3408E and 3412E Engines for Caterpillar Built Machines Housing (Front) - Install
3408E and 3412E Engines for Caterpillar Built Machines Housing (Front) - Remove
988G Wheel Loader Power Train Temperature Sensor (Axle Oil)
834G Wheel Tractor and 836G Landfill Compactor Electrohydraulic System Hydraulic Fan System
966G and 972G Wheel Loaders Kickout and Positioner Control
834G Wheel Tractor and 836G Landfill Compactor Electrohydraulic System Piston Pump (Hydraulic Fan)
988G Wheel Loader Bucket Stops - Inspect/Replace
3306C Engines for Caterpillar Built Machines Compression Brake
836G Landfill Compactor and 834G Wheel Dozer Belts - Inspect/Adjust/Replace
834G Wheel Tractor and 836G Landfill Compactor Steering System Steering Pilot System
988G Wheel Loader Window Wiper - Inspect/Replace
D11R Carrydozer Track-Type Tractor Pitch Regenerate Solenoid Valve - Remove
D11R Carrydozer Track-Type Tractor Pitch Regenerate Solenoid Valve - Install
D11R Carrydozer Track-Type Tractor Pitch Regenerate Solenoid Valve - Disassemble
3408E and 3412E Engines for Caterpillar Built Machines Turbocharger - Disassemble
D11R Carrydozer Track-Type Tractor Pitch Regenerate Solenoid Valve - Assemble
D11R Track-Type Tractor Machine Systems Ripper Shank - Remove and Install
D11R Carrydozer Track-Type Tractor Ripper Shank - Remove and Install
545 Wheel Skidder Power Train Differential Pinion - Remove
545 Wheel Skidder Power Train Solenoid Valve (Differential Lock)