TM 5-1940-277-34ALTERNATOR REPAIR INSTRUCTIONS(Continued)LOCATIONITEMACTIONREMARKSCAUTIONDo not remove any connections while alternator is running. Diodes will be damaged.NOTEThe following steps apply to Test Stand, Automotive Generator, Alternator and Starter. Refer toTM 9-4910-458-12 for test stand diagrams and instructions.19.Test standa.AlternatorMount alternatorMake certain thaton the generatordrive belt isand starterover alternatormounting bracketpulley and driveand secure withand alternatorchain vise.pulley arealined.b.Control panel Base settings forsettingstest stand are asfollows:UpperPortionofTestStandExternal master power switch. ................................................OffMain power switch . ................................................................OffDC load ammeter . .................................................................500 amperesDC field ammeter. ..................................................................30 amperesMillivolt meter ........................................................................9 volts and offDC voltmeter . ........................................................................50 volts and RECT/GENTachometer. ...........................................................................Direct driveAC ammeter...........................................................................500 amperes and phase AAC voltmeter ..........................................................................50 volts and off400-ampere control box..........................................................Voltage adjust fully counter-clockwiseEqualizer coil test . .................................................................OffIgnition switch ........................................................................Off2-86
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