TM-9-2350-358-BD M109A6 Battlefield Damage Assessment and Repair Download
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TM 9-2350-358-BD 7-3. REPAIR PROCEDURE INDEX PARA Motor, starter, Inoperative ....................................................................................................................................... 7-5 Starter switch, Inoperative ....................................................................................................................................... 7-6 Brush, electrical, motor generator, worn ................................................................................................................. 7-7 Switch, relay, oil pressure activated, air cleaner and generator system, inoperative.............................................. 7-9 Switch, master, Inoperative ..................................................................................................................................... 7-10 Switch, neutral, safety, Inoperative.......................................................................................................................... 7-11 Relay, master, inoperative....................................................................................................................................... 7-12 Relay, starter protection, inoperative....................................................................................................................... 7-13 Relay, generator/fuel pumps, inoperative................................................................................................................ 7-14 Relay, hydraulic pump motor, inoperative ............................................................................................................... 7-15 Overload sensor, hydraulic pump motor, inoperative .............................................................................................. 7-16 8. Record BDAR action taken. When mission is complete, as soon as practical, repair the equipment/system using standard maintenance procedures. SECTION II. ELECTRICAL GENERATION AND STORAGE SYSTEM 7-4. GENERAL The electrical system on the M109A6 is a 24-volt negative ground, direct current system. Electrical current storage for starting and standby circuits is provided by batteries. The batteries are connected in a series-parallel configuration to provide 24 V dc current. All electrical power to circuits can be turned off by the MASTER power switch. The MASTER power switch prevents accidental discharge of the batteries if a subsystem is not turned off. 7-3