TM 5-4320-300-14CHAPTER. 2OPERATING INSTRUCTIONSSection I. DESCRIPTION AND USE OF OPERATOR'S CONTROLSAND INDICATORSWARNINGPersonal injury may result if the engine is not turned off during service or maintenance.Table 2-1. Operator's Controls and IndicatorsControl orKeyIndicatorFunction1Battery disconnectDisconnects battery from electrical system of engine. Operated byswitchpulling and turning either direction.2Light switchTurns control panel lights on and off. Connected between engineelectrical system and light bulbs on control panel.3Pressure gageMonitors pressure in pressure portion of pump. Graduated inmillimeters of mercury (mm Hg), from 0 to 100.4Compound gageMonitors pump discharge or suction in pressure portion of pump.Graduated in increments of 2 pounds per square inch gage (psig)from 0 to 100, and 0 to -30 millimeters of mercury (mm Hg).5Oil pressure gageIndicates engine oil pressure in pounds per square inch (psi).Mechanically connected by an oil line to the lubrication system onthe outlet side of the oil pump. Graduated in 10 psi incrementsfrom 0 to 80 psi.6Water temperatureIndicates temperature of engine coolant in degrees Fahrenheit ( F).GageElectrically connected to sending unit in engine block.2-1
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