grand dink 125 mmc Workshop-manual : Page 29

          1. GENERAL INFORMATION                                               GRAND DINK 125/150



 POOR CHARGING (BATTERY OVER DISCHARGING OR OVERCHARGING)
 Undercharging

 Inspection/Adjustment                   Symptom                  Probable Cause

 Start engine and test
 limit voltage of battery
 terminals

                                              Voltage does not    Faulty AC generator
                            Normal voltage    increase            Faulty regulator/rectifier
                                                                  Faulty battery
 Measure resistance
 between AC generator
 coil terminals


                               Normal        Resistance too low   Shorted AC generator coil
                                                                  Open circuit between AC
                                                                  generator 3 yellow wires

 Test output voltage of
 regulator/rectifier
 coupler red wire
                                                                  Faulty regulator/rectifier
                                                                  Faulty AC generator
                            Normal voltage         No voltage     Loose regulator/rectifier
                                                                  coupler
                                                                  Limit voltage too high




 Overcharging

 Inspection/Adjustment                   Symptom                  Probable Cause

 Measure battery limit
 voltage with an electric
 tester
                                                                  Faulty battery
                               Normal              Abnormal       Faulty regulator/rectifier
                                                                  Broken or poorly connected
                                                                  regulator/rectifier black wire

 Check resistance
 between regulator/
 rectifier terminals

                              Normal               Abnormal       Limit voltage too high




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