2.21.1.2 Bleeding Fuel Injection Lines

Figure 2-110. Fuel System Bleeding (Models 609-C and US636HCCD-1 Shown).

2.21.2 Fuel and Oil Lines. Hoses. and Fittings Maintenance.

TM-10-4320-344-24 Pump Assembly Water 600 GPM Model 609-A (NSN 4320-01-184-7494) Model 609-C (NSN 4320-01-261-6470) Model US636HCCD-1 Manual
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2.21.1 Fuel System Bleeding. (Continued) 2.21.1.2 Bleeding Fuel Injection Lines. Diesel fuel is flammable. Keep sparks, cigarettes, and open flame away from fuel system components while working on engine. This procedure applies to Models 609-C and US636HCCD-1. The procedre for Model 609-A is similar. a. Place pan under pumping assembly. Diesel fuel is flammable. Keep sparks, cigarettes, and open flame away from fuel system components while working on engine. When bleeding fuel injection lines, loosen fuel line nuts one-quarter to one-half turn. Fuel injection line nuts that are too loose may come off, causing fuel spray that could injure personnel. Failure to obey these warnings may result in personal injury or death. b . Loosen fuel injection line nut (5) at fuel injector nozzle (6). c . Start engine, refer to TM 10-4320-344-10, and let fuel flow until air bubbles disappear from fuel flow. d . Tighten fuel injection line nut (5). e . Repeat steps b, c, and d for remaining fuel injector nozzles (6). f . Stop engine, refer to TM 10-4320-344-10. g . Remove pan from under pumping assembly and properly dispose of fuel in accordance with standing operating procedure. 2-260 TM 10-4320-344-24 NOTE

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