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BENCH TEST
Lower Portion of Test Stand

TM-5-1940-277-34 Boat Bridge Erection Twin Jet Aluminum Hull Model USCSBMK1 (1940-01-105-5728) Manual
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TM 5-1940-277-34 ALTERNATOR REPAIR INSTRUCTIONS (Continued) LOCATION ITEM ACTION REMARKS CAUTION Do not remove any connections while alternator is running.  Diodes will be damaged. NOTE The following steps apply to Test Stand, Automotive Generator, Alternator and Starter.  Refer to TM 9-4910-458-12 for test stand diagrams and instructions. 19. Test stand a. Alternator Mount alternator Make certain that on the generator drive belt is and starter over alternator mounting bracket pulley and drive and secure with and alternator chain vise. pulley are alined. b. Control panel Base settings for settings test stand are as follows: Upper Portion of Test Stand External master power switch. ................................................Off Main power switch . ................................................................Off DC load ammeter . .................................................................500 amperes DC field ammeter. ..................................................................30 amperes Millivolt meter ........................................................................9 volts and off DC voltmeter . ........................................................................50 volts and RECT/GEN Tachometer. ...........................................................................Direct drive AC ammeter...........................................................................500 amperes and phase A AC voltmeter ..........................................................................50 volts and off 400-ampere control box..........................................................Voltage adjust fully counter- clockwise Equalizer coil test . .................................................................Off Ignition switch ........................................................................Off 2-86







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