General Information
Often when problems with the charging system are being investigated, the alternator is not the problem. If a low battery condition is present, test the batteries first. See Special Instruction, SEHS7633, "Battery Test Procedure" for more information. If the engine cranks slowly, then test the starting system. See Service Magazine, SEPD0020, "Testing The Starter On The Engine" for more information. If a warning indicator for the charging system is ON, see Service Magazine, SEBD1751, "Difference Between Alternator Indicator In Electronic Monitoring System (EMS) And Low Voltage Indicator In Operating Monitoring System (OMS)". When a problem with the charging system is suspected, then complete the testing that is described in Diagnostic Function, "Charging System".
Caterpillar Information System:
3408E and 3412E Engines for Caterpillar Built Machines Electrical System
3126B Engines Unit Injector - Test
3176C and 3196 Industrial Engines Engine Design
C-10 and C-12 Industrial Engines Engine Design
3408E and 3412E Engines for Caterpillar Built Machines Cooling System
3500B and 3500B High Displacement Generator Set Engines Grounding Practices
3500B and 3500B High Displacement Generator Set Engines Air Shutoff
3114, 3116, and 3126 Engines for Caterpillar Built Machines Engine Oil Pressure Sensor - Remove and Install
3508B Industrial Engines Shutdown Notification Output
3508B Industrial Engines Start Enable Output
3508B Industrial Engines Output for the General System Alarm
3176C and 3196 Marine Engines Manifold Adapter - Remove and Install - Right Hand Engine Application
Alternator - Delco 27SI Charging System
3516B and 3516B HD Engines and 994D, 994F, and 994H Wheel Loaders Engine Design
3500B Locomotive Engines System Configuration Parameters
2000/02/01 Check The 163-3266 Time Delay Relay If There Is An Unexplained Engine Shutdown {7451}
3500B and 3500B High Displacement Generator Set Engines Calibration
2004/08/02 New Cab Air Filters Provide Improved Efficiency and Odor Reduction {7309, 7320, 7342}
3500B and 3500B High Displacement Generator Set Engines Monitoring System Parameters
3512B Marine Auxiliary Engine Engine Speed/Timing Sensor - Remove and Install
2000/02/01 Correction to Specifications Module, SENR6557-01, "3100 HEUI Diesel Truck Engine" {1105}
3126B Engines Exhaust Temperature - Test
3500 Generator Set Engines Fuel Pressure - Diesel System
3126B Engines Aftercooler - Test