TM 5-3805-260-24REMOVING CARBON DAM1. Fuel injection nozzle. 2. Csrbon dam. 3.Seal. Remove carbon dam (2) with needlenosepliers and remove seal (3) from thenozzle.CAUTIONDo not use a steel brush or a wire wheel toclean the nozzle body or the nozzle tip. Use ofthese tools can cause a small reduction oforifice size, and this will cause a largereduction in engine horsepower. Too muchuse of the 8S2258 Brass Wire Brush will alsoremove the coating that is on the nozzle forprotection.Clean the groove for carbon seal dam (2) andthe body of the nozzle below the groove with the 8S2258Brass Wire brush (M). Remove the carbon, but be surenot to use the brush enough to cause damage to thebody of the nozzle.NOTE: A change in color in the area below the groove isnormal and does not affect the body of the nozzle.8S2245 CLEANING KIT(M) 8S2258 Brass Wire Brush. (N) 8S2252 CarbonSeal Tool. (P) 8S2250 Nozzle Holding Tool.I.Return Leakage Test1. Put nozzle (I) and 8S2250 Nozzle HoldingTool (P) in a vise and remove cap (4).FUEL INJECTION NOZZLE4. Cap. 5. Nut.2.Use 5P4244 Adapter (Q) to connect fuelinjection nozzle (I) to the tester. Nut (5) can be tightenedby hand if IH1023 O-ring Seal (6) is not damaged.3.Install FT1384 Extension (R) in 8S2270Fuel Collector (S) and put parts into position undernozzle.FUEL INJECTION NOZZLE CONNECTOR 5.Nut. 6. 1H1023 O-ring Seal for fuel line.4.Put the tip of the fuel injection nozzle a littleabove the horizontal position. Tighten thenut by hand that connects the fuel injectionnozzle to the tester.2-40
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