Diode Test
二极管测试将确定二极管是否损坏，以及是否需要更换二极管。 在测试中使用 6V-7070 数字万用表 。 将万用表设置为二极管测试位置。 从电路断开二极管。
- 将万用表的正极引线与二极管一端相连。 将万用表的负极引线与二极管对端相连。 记录万用表上的读数。
- 对换二极管上万用表的连接点。 记录万用表上的读数。
如果一端测试中的万用表读数高而对端测试中的万用表读数低，则二极管损坏。 如果两端测试中的万用表读数同时高或低，则二极损坏并需要更换。
Caterpillar Information System:
Electric Protection System Energize-To-Run For Generator Set, Industrial and Marine Diesel Engines Magnetic Pickup Test
AP-1000B and BG-260C Asphalt Pavers Manual Propel Override Control
Digital Voltage Regulator Instantaneous Trip Shutdown - Troubleshoot
Challenger 65C, Challenger 65D, Challenger 65E, Challenger 70C, Challenger 75C, Challenger 75D, Challenger 75E, Challenger 85C, Challenger 85D, Challenger 85E and Challenger 95E Agricultural Tractors Machine Monitor System Relays
Challenger 35, Challenger 45 and Challenger 55 Agricultural Tractors Electronic Systems Service Operations
3524B Engine for Caterpillar Built Machines Accessory Drive (Rear) - Install
554 Forwarder and 574 Forwarder Gate Cylinders - Lubricate
D400E Series II Articulated Truck Hoist Control Valve - Remove
554 Forwarder and 574 Forwarder Cab Door Hinges - Lubricate
797 Off-Highway Truck Power Train Gear Pump (Transmission Charging and Scavenge)
Challenger 35, Challenger 45 and Challenger 55 Agricultural Tractors Electronic Systems F341 Transmission Speed Sensor - Failed Low
CB-534C and CB-634C Vibratory Compactors Vibratory System Visual Inspection
Electric Protection System Energize-To-Run For Generator Set, Industrial and Marine Diesel Engines Engine Oil Pressure Switch Test
Challenger 35, Challenger 45 and Challenger 55 Agricultural Tractors Electronic Systems Mode 1 - Operator Calibrations
3512B and 3516B Engine Supplement for and 784C,, 785C and and 785C HAA Off-Highway Truck/Tractors Crankshaft Front Seal - Install
Challenger 35, Challenger 45 and Challenger 55 Agricultural Tractors Electronic Systems F342 Engine RPM Sensor - Failed High
Electric Protection System Energize-To-Run For Generator Set, Industrial and Marine Diesel Engines Slave Relay Test
Challenger 35, Challenger 45 and Challenger 55 Agricultural Tractors Electronic Systems F343 Engine RPM Sensor - Failed Low
D350E Series II Articulated Truck Power Train Rear Drive Shaft - Remove and Install
D400E Series II Articulated Truck Hoist Control Valve - Install
CP-563D, CS-563D, CS-573D and CS-583D Vibratory Compactors Vibratory System Controller (Variable Frequency) - If Equipped
Challenger 35, Challenger 45 and Challenger 55 Agricultural Tractors Electronic Systems F344 Engine RPM Sensor - Failed
3306C Engines for Caterpillar Built Machines Air Compressor
CB-534C and CB-634C Vibratory Compactors Vibratory System Vibratory System Troubleshooting