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TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download

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TM 9-2320-280-34 6-4. 200 AMPERE ALTERNATOR (A0013036AA) TESTING AND REPAIR (Cont’d) 5. Set 500 amp test stand as follows: Model GSAR-500 Model AGT-99A (a) DC ammeter load and starter selector X10 500 amp (b) DC ammeter field and battery charge selector X1 5 amp (c) Field circuit switch Regulator Regulator (d) DC voltmeter circuit selector RECT/GEN RECT/GEN 6. Turn 500 amp test stand master power switch and master load sw itch to “ON.” Green lamp on 500 amp test stand must illuminate. Start the varidrive by actuating the start button. Set 500 amp battery circuit selector to 24V DC, and the “IGN" switch to “ON". NOTE When tachometer reaches 3000 rpm, test light should go out to indicate proper charging from alternator. 7. Observing DC output and tachometer rpm, set the 200 A switch of the load bank switches to “ON". and raise speed until tachometer reads 5000 rpm. 8. Snap the load bank master load switch in the "ON" position, and use the variable load control to apply the load. 9. Readings should be 28.0 volts and 100-160 amps. If readings are not correct, repair alternator. NOTE Prior to removal, tag leads for installation. b. Disassembly/Testing 1. Scribe alignment marks (5) on cover plate (1), drive end housing (4), stator (2) and end housing (3). 6-21