ELECTRICALS 9 ALTERNATOR CHARGING SYSTEM CHECKS ON THE VEHICLE : Before starting ensure the battery condition : NO REMOVE THE ALTERNATOR AND CHECK REGULATOR CHECK WARNING LAMP FOR ANY DEFECT. CHECK "WL" TERMINAL IN ALTERNATOR FOR PROPER CONNECTION. CHECK THE BELT TENSION. IF FOUND SLACK ADJUST THE BELT DEFLECTION TO BE 8-10mm 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. SWITCH ON THE IGNITION ALTERNATOR FOUND ACCEPTABLE REMOVE THE ALTERNATOR AND CHECK ➡ NO ➥ YES ➥ YES ➡ NO DOES WARNING LAMP GLOW ? RUN THE ENGINE AT IDLE SPEED IS RATED CURRENT OUTPUT REACHED WITHOUT VOLTAGE DROPPING BELOW 13.5 VOLTS ? ➡ DOES WARNING LAMP GO OFF ? NO YES DOES THE VOLTMETER READ BETWEEN 14.0 TO 14.8 VOLTS ? ENSURE THAT THE AMMETER READING IS LESS THAN 20A. INCASE THE BATTERY IS DISCHARGED ALLOW CHARGING OF BATTERY TILL THE AMMETER READING COMES TO LESS THAN 20A. CONNECT THE VOLTMETER ACROSS THE ALTERNATOR MAIN TERMINALS. CHECK THE VOLT METER READING RAISE THE ENGINE SPEED TO AROUND 2800 ± 200 RPM. SWITCH "ON" THE HEADLAMP PARKING LAMP, TAIL LAMP AND OTHER ELECTRICAL LOADS EXCEPT HEATER. ➥ YES SCHEMATIC BELT DRIVE ARRANGEMENT ➥
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