TM 9-2320-365-34-11-14. ELECTRICAL SYSTEMFigure 1-9. Electrical SystemIn the Electrical System, a heavy duty starting motor (1, Figure 1-9) is mounted on the engine flywheel housing andprovides the cranking power necessary for starting the engine. The voltage regulator (2) maintains both a 14- and 28-volts level for proper battery charging. The alternator (3) provides sufficient amperage to operate all electricalcomponents and charge the batteries during engine idling. Vehicle exterior lights are mounted in protective locationsor are protected to prevent damage. Protection is provided for lights during cross country travel. Polycarbonate lensesare provided for all lights except the sealed beam headlights. The electrical system supplies all of the electrical powerneeded to operate the vehicle and trailer. The complete Electrical System is made up of the following subsystems:• Power Storage and Generating• Accessory Lighting• Engine Starting and Stopping• Instruments• Service Lighting• Indicator Lights and Alarm• Blackout Lighting• Troubleshooting Aida. Power Storage and Generating. Power storage for the vehicle consists of four 12-volt batteries. The four batteriesare divided into two sets. Two batteries in each set are wired in parallel to produce higher amperage. The two setsare then wired in series to produce 24 volts Direct Current (DC). While the batteries can power all of the systems fora limited time, their primary purpose is to supply power to the engine starting system. Once the engine is running, thegenerating system provides electrical power for all of the systems. The engine driven alternator generates AlternatingCurrent (AC) which is passed through a set of rectifiers that change it into DC current. This DC current is used tocharge the batteries and is distributed to the electrical sub-systems of the vehicle. The voltage regulator adjustsalternator output to fit the needs of the electrical system.1-14 Change 1
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
