Quantcast 50.  12 AND 24 VOLT SYSTEMS NOT CHARGING OR UNDER CHARGING (145 AMP)

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Page Title: 50. 12 AND 24 VOLT SYSTEMS NOT CHARGING OR UNDER CHARGING (145 AMP)
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VERIFY REPAIR - TM-9-2320-364-20-2_823
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TM-9-2320-364-20-2 Truck Tractor Line Haul 52 000 GVWR 6x4 M915A2 Truck Tractor Light Equipment Transporter (Let) Manual
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VISUAL INSPECTION - TM-9-2320-364-20-2_825
TM 9-2320-364-20-2 2-1600 Materials/Parts Tag, Identification (Item 88, Appendix C) Lockwasher (2) (Item 149, Appendix F) Lockwasher (28) (Item 171, Appendix F) Lockwasher (2) (Item 193, Appendix F) Lockwasher (Item 198, Appendix F) 50.  12 AND 24 VOLT SYSTEMS NOT CHARGING OR UNDER CHARGING (145 AMP). INITIAL SETUP 1. Replace or adjust alternator belts (Para 7-4).  Verify repair, go to Step 14 of this Fault. START NO YES Both voltmeters indicate low   charge. Batteries OK. Fuel pump operates indicating   24 vdc present at DUVAC   controller IGN terminal. Alternator belts loose or missing. DUVAC controller faulty. Wire 1278 between alternator   positive (+) terminal and   DUVAC (A) terminal faulty. Wire 1275 from alternator   negative (–) terminal to   battery negative faulty. Jumperwire from alternator field   coil negative terminal to   alternator negative (–)   terminal faulty. Alternator faulty. Wire 1344 between alternator   and regulator faulty. Wire 1274 between DUVAC   controller and batteries faulty. Brown wire between DUVAC   controller and regulator faulty. Wire 1435 between DUVAC   controller and ground faulty. Black wire between regulator   and ground faulty. Red wire between DUVAC   controller and regulator faulty. Orange wire between DUVAC   controller and regulator faulty. Regulator faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Visual inspection. If alternator belts are loose or missing, alternator will not charge. 2-20.  ELECTRICAL SYSTEM TROUBLESHOOTING (CONT). Tools and Special Tools Tool Kit, General Mechanic’s:  Automotive (Item 74, Appendix G) STE/ICE-R (Optional) (Item 3, Appendix G) Gage, Belt Tension (Item 26, Appendix G) Multimeter (Item 44, Appendix G) Jumperwire Equipment Condition Engine OFF, (TM 9-2320-364-10) Parking brake applied, (TM 9-2320-364-10) Wheels chocked, (TM 9-2320-364-10) References TM 9-2320-364-10 TM 9-4910-571-12&P Are alternator belts properly installed?

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