TM 10-4320-344-102.1.2.4 Air System and Priming Tube. Refer to Figure 2-6 and Table 2-6.Figure 2-6.Model 609-C Air System and Priming Tube Controls and Indicators.Table 2-6.Description of Model 609-C Air System and Priming Tube Controls andIndicators.ItemNumber12345DescriptionAir Exhaust DoorHandleEngine Exhaust DoorPriming TubeAIR FILTERCapRESTRICTION GAUGEReset ButtonFunctionUsed to open/close air exhaust door to vent enginecooling air.Air exhaust door is connected to engineexhaust door (2) .Covers engine exhaust outlet when closed.Opens/closes when air exhaust door is opened/closed.Used to prime pump as required on initial systemstartup.To use, remove cap, fill with clean water,and install cap.Indicates air f i l t er restriction in centimeters (cm) .Used to reset AIR FILTER RESTRICTION GAUGE (4) whenindicated reading is questionable and after aircleaner has been serviced.2-10
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