Quantcast 3-52. FUEL INJECTOR REPAIR

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TM 9-2815-225-34&P 3-52. FUEL INJECTOR REPAIR THIS TASK COVERS: a.  Disassembly c.  Inspection b.  Cleaning d.  Assembly INITIAL SETUP: APPLICABLE MODELS PERSONNEL REQUIRED All Fuel and electrical systems repairman MOS 63G SPECIAL TOOLS REFERENCES (TM) Injector stand (15434) ST-1298 None Injector cup wrench (15434) ST-995 Crowfoot wrench (15434) ST-1072 TROUBLESHOOTING REFERENCES Para. 2-8 TEST EQUIPMENT None EQUIPMENT CONDITION Injector assembly removed (para. 3-23). MATERIALS/PARTS Mineral spirits (Appendix C, Item 17) SPECIAL ENVIRONMENTAL CONDITIONS Solvent, SD-3 (Appendix C, Item 4) Work area clean and away from blowing dirt and Diesel fuel, regular (Appendix C, Item 19) dust. Lapping compound, 280-grit (Appendix C, Item 8) Compound, Prussian blue (Appendix C, Item 9) GENERAL SAFETY INSTRUCTIONS Oil, lubricating, OE/HDO 10    Diesel fuel is flammable. (Appendix C, Item 20)    Always wear eye protection when cleaning with Gasket (15434) 173086 compressed air. Three gaskets (15434) 193736    Use approved solvent in well-ventilated area. LOCATION/ITEM ACTION REMARKS a.  Disassembly NOTE Injector barrels and plungers are not interchangeable. Use this procedure to repair any of the six fuel injector assemblies. 1. Plunger (2) Lift out.   Store plunger (2) by standing it on coupling end. 2. Top-stop locknut (4) and Remove. top-stop screw (3) 3. Washer(5) and injector Lift out. spring (6) 4. Three gaskets (8) Remove.   Discard gaskets (8). 5. Filter screen clip (14), filter Remove from top-stop adapter (7). Discard gasket (16).  Discard filter screen (15), and gasket (16) screen (15) only if damaged. NOTE Do not remove or turn adjustable orifice plug located behind filter screen.  The orifice plug has been pre-set.  Fuel delivery is adjusted by changing orifice plug or by burnishing plug in its operating position. 6. Top-stop adapter (7) and Loosen. Secure injector assembly (1) into cup retainer (11) injector stand (ST-1298).  Using body and injector cup wrench (ST-995), loosen retainer (11) but do not remove.  When loose, remove injector from stand. 3-340


 


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