Electrical System 7.
TROUBLE SHOOTING FLOW CHART FOR ALTERNATORS
SERVICE RECOMMENDATIONS : Before dismantling Alternator from engine, make sure that Alternator is faulty. Below flow chart will help on diagnosing the fault. It is recommended to replace complete Alternator for any internal failure of Alternator. Not to disassemble the Alternator for repairing inside components. SWITCH ON THE IGNITION
NO
DOES WARNING LAMP GLOW ?
CHECK WARNING LAMP FOR ANY DEFECT. CHECK “WL” TERMINAL IN ALTERNATOR FOR PROPER CONNECTION.
YES RAISE THE ENGINE SPEED TO 1000 RPM (APPROX)
NO
DOES WARNING LAMP GO OFF ?
YES CONNECT DC AMMETER IN SERIES WITH ALTERNATOR & BATTERY POSITIVE TERMINAL. ENSURE THAT THE AMMETER READING FALLS BETWEEN 7 TO 10 AMPS. IN CASE THE BATTERY IS FULLY CHARGED THE AMMETER INDICATION MAY VARY. ALSO CONNECT THE VOLTMETER ACROSS THE ALTERNATOR MAIN TERMINALS. CHECK THE VOLTMETER READING.
DOES THE VOLTMETER READ BETWEEN 14.2 TO 15.0 VOLTS ?
NO
CHECK THE BELT TENSION. IF FOUND SLACK ADJUST THE BELT DEFLECTION TO BE 10-15MM WHEN PRESSED MIDWAY AT THE LONGEST POINT BETWEEN PULLEYS (REFER FIGURE BELOW) AND CHECK FOR CHARGING. IF THE UNIT IS STILL NOT CHARGING REMOVE THE ALTERNATOR AND CHECK.
REMOVE THE ALTERNATOR AND CHECK REGULATOR
YES SWITCH “ON” THE HEAD LAMP PARKING LAMP, TAIL LAMP AND OTHER ELECTRICAL LOADS EXCEPT HEATER.
IS RATED CURRENT OUTPUT REACHED WITHOUT VOLTAGE DROPPING BELOW 13.5 VOLTS ?
NO
REMOVE THE ALTERNATOR AND CHECK
YES ALTERNATOR FOUND ACCEPTABLE G-26
35 Series 4WD, Model - 3535, 4035, 4535 and 5035 SM June’08
