16. TROUBLESHOOTING 16.6 OTHER TROUBLE 16.6.1 ELECTRICAL SYSTEM e (): Always contact your Komatsu distributor when dealing with these items. e —Incases of abnormalities or causes which are not listed below, please contact your Komatsu distributor for repairs.
Problem Main causes Remedy ° Lamp does not glow brightly even when the engine runs at height speed Defective wiring ° (Check, repair loose _ terminals, disconnections) Adjust fan belt tension For details, see “EVERY 250 HOURS SERVICE” Lamp flickers while engine is running Defective adjustment of fan belt tension Charge level monitor does not go out even when engine is running Defective alternator Defective wiring (° Replace) (° Check, repair) Abnormal noise is generated from al- Defective alternator (¢ Replace) Starting motor does not turn when starting switch is turned to ON.
Defective wiring Insufficient battery charge (¢ Check, repair) e Charge Pinion of starting motor keeps going in and out Insufficient battery charge ¢ Charge Starting motor turns engine sluggishly Insufficient battery charge Defective starting motor e Charge (¢ Replace) Starting motor disengages before engine starts Defective wiring Insufficient battery charge (¢ Check, repair) ¢ Charge Pre-heating monitor does not light Defective wiring Defective heater relay Defective monitor (¢ Check, repair) (¢ Replace) (¢ Replace) Oil pressure monitor does not light up when engine is stopped (starting switch at ON position) Defective monitor Defective caution lamp switch (eReplace) (*Replace) Defective wiring (¢ Check, repair) (¢ Replace) (¢ Replace) Outside of electrical heater warm when touched by hand 2-94 is not Disconnection in electric heater Defective switch operation of heater PC160/180/200-6k-ENG ternator