6. Fuel injection equipment1356.1.2 Fuel injection pump service data and adjustment3YM30(1) Service data for 3YM30Note : The value in parentheses is a reference value.Part code (Back No.) - 728990-51350 (TMR1)Adjustment SPEC - ENGINE SPEC SERVICE STDItem Fuel valve (Valve pressure) - A (120) (170)Nozzle type (ID mark) - NP-DN0PDN158 DN-12SD12Fuel injection pipe mm Ø 2 x 320 Ø2 x 600InjectionadjustmentStarting Pump speedN D min -1 200 -Averageinjectionvolume Q Dmm 3 /st 38 ± 5 -Rated load Pump speedN A min -1 1800 -Injectionvolume Q A mm 3 /st 22.4 ± 0.75 -Variation % ± 3 -Torque rise Pump speedN C min -1 1300 -Injectionvolume Q C mm 3 /st 25.9 ± 0.5 -Variation % ± 5 -Hi-idle Pump speedN B min -1 1925 -Injectionvolume Q B mm 3 /st (4) -Idle Pump speedN E min -1 425 -Injectionvolume Q E mm 3 /st (4) -Plunger stroke mm 7.0Plunger diameter mm Ø 6Retraction volume of delivery valve mm 20.1Pre-stroke mm 2.9Top clearance mm 1.4Governor spring SpringconstantN/cm(kgf/cm) 4.23 (0.431)Free length mm 42
