TM 9--2350--292--100006 00--13DESCRIPTION AND USE OF OPERATOR’S CONTROLS AND INDICATORS --CONTINUED0006 00Key Control or Indicator Function74 HIGH AIR TEMP indicator Lights red when APU air temperature reaches 394°F (201°C)(446°F(230°C)HATZ).75 LOW OIL PRESS indicator Lights red when APU engine oil pressure drops below 14+2 psi. (96 kpa)76 APU control panel light Illuminates APU control panel.77 ENGINE OIL PRESS gauge Indicates APU engine oil pressure in psi.78 PTO CLUTCH ENGAGED Lights green when PTO CLUTCH toggleindicator switch is on79 LAMP TEST momentary toggle Lights indicator lamps on PTO/ACCESSORYswitch panel and hydraulic control panel80 PTO CLUTCH toggle switch Engages/disengages electromagnetic clutch when ON/OFF81 PTO HIGH TEMP indicator Lights red when electromagnetic clutch oiltemperature reaches 285°F (141°C)82 START momentary toggle switch Hold in momentary on (MOM ON) position to start APU.83 PREHEAT momentary toggle Hold in momentary on (MOM ON) positionswitch to preheat glow plugs in APU during startup.84 FUEL SHUT OFF toggle switch Used to shut off APU by turning off solenoid.85 APU GEN toggle switch Engages/disengages APU generator from electrical system when ON/OFF.86 SPADE LOCK release Retracts spade lock when pressed sopushbutton spade can be lowered.ACCESSORIES PANEL(mounted on back of hoistwinch cable chute (not shown)74 757677787980818283848586
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