TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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6-3.2. 100 AMPERE ALTERNATOR (12342944) TESTING AND REPAIR This task covers: a. Alternator Output Testing d. Cleaning b. Disassembly e. Assembly c. Static Testing a. Alternator Output Testing 1. Mount pivot arm of 500 amp test stand to high-speed side and screw mounting flange adapter to pivot arm, and connect pulley drive shaft to high-speed head. Screw pulley drive shaft to mounting flange adapter. 2. Mount alternator to starter/alternator mounting bracket on 500 amp test stand, and connect V-belt from 500 amp test stand pulley to alternator pulley. Adjust belt tension. 3. Connect cable from alternator ground terminal to 500 amp test stand G- terminal. Connect cable from alternator “Bat” terminal to 500 amp test stand G+ terminal. Connect cable from alternator regulator IGN to 500 amp test stand F terminal. 4. Make a jumper wire with a ring terminal at both ends. Connect jumper wire on 500 amp test stand from IGN SWITCH terminal to F-B terminal. NOTE Prior to operation of the test stand, ensure all switches and controls are in the “initial” positions as referenced in Operator and Maintenance Manual, TM 9-4910-663-12 (UMC Model GSAR-500), or Operator and Maintenance Manual, TM 9-4910-485-12 (Sun Model AGT-99A). 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 INITIAL SETUP: Applicable Models _______________ M996, M996A1, M997, M997A1 Tools ____ General mechanic’s tool kit: automotive (Appendix G, Item 1) Puller (Appendix G, Item 136) Test Equipment _____________ Multimeter (Appendix G, Item 120) Test stand (Appendix G, Item 94) Materials/Parts ____________ Locknut (Appendix E, Item 63) Eighteen locknuts (Appendix E, Item 64) Three lockwashers (Appendix E, Item 88) Twelve locknuts (Appendix E, Item 65) Sealing compound (Appendix B, Item 51) Sealing compound (Appendix B, Item 54) Sealing compound (Appendix B, Item 55) Sealant (Appendix B, Item 43) Personnel Required ________________ One mechanic One assistant Manual References ________________ TM 9-2320-280-20 TM 9-2320-280-24P TM 9-4910-663-12 TM 9-4910-485-12 Equipment Condition _________________ Alternator removed (TM 9-2320-280-20). General Safety Instructions ______________________ Always support alternator core and shaft assembly during removal and installation. Maintenance Level _______________ Direct support TM 9-2320-280-34 6-18.16 Change 1