TM-9-2815-205-24 Technical Manual for M113 Engine 6V53 6V53T Download
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TESTING - Continued 3. High pressure leak test procedures: WARNING Always hold injector so that fuel spray cannot penetrate skin. Fuel oil which enters blood stream may cause serious infection. Failure to comply may result in injury, illness, or death to personnel. Compressed air used for cleaning purposes will not exceed 30 PSI (207 kPa). Use only with protective equipment (goggles, face shield, gloves, etc.). Failure to comply may result in injury to personnel. a. Thoroughly dry injector with compressed air. b. Place injector in diesel fuel injector test fixture (Figure 15, Item 39). c. Check fuel connections for leaks. If leaks have occurred, tighten connections, dry injector, and check again. d. With injector rack in FULL FUEL position (fully depressed) and popping handle (Figure 15, Item 38) locked in downward position, operate pump handle (Figure 15, Item 40) to build up and maintain pressure. e. Pump up injector tester and maintain pressure of 1600 to 2000 psi (11031 to 13789 kPa). Inspect for leaks at fuel connector ring spacers, injector body plugs, and injector nut preformed packing. 4. Spray pattern check procedures: a. Place injector in diesel fuel injector test fixture (Figure 15, Item 39). b. Place injector rack in FULL FUEL position (fully depressed). WARNING Do not operate diesel fuel injector nozzle tester without shield. Fuel spray can penetrate skin. Fuel oil entering blood stream may cause serious infection. Failure to comply may result in injury, illness, or death to personnel. c. Place shield (Figure 15, Item 44) on diesel fuel injector nozzle tester (Figure 15, Item 41). Operate pump handle (Figure 15, Item 40) to build up slight pressure (10 psi (69 kPa) minimum) in system. d. Pop fuel injector several times with popping handle (Figure 15, Item 38). Observe spray pattern emitted from fuel injector spray tip. If spray tip pattern is not uniform, spray tip orifice is dirty or damaged. e. Pop fuel injector several times with popping handle (Figure 15, Item 38) until no pressure is observed on test gage (Figure 15, Item 43) to avoid fuel spray when injector is removed from diesel fuel injector test fixture. TM 9-2815-205-24 0084 0084-18