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03 FUEL SYSTEM SERVICE MANUAL MARINE ENGINES 03.00 fuel system 1 2 3 4 5 6 7 8 Saugventil Anti-siphon valve Absperrhahn Fuel stop cock Kraftstoff Filter Fuel filter Kraftstoffpumpe Fuel pump Rückschlagventil Check valve Kraftstoffzufuhr PD Fuel supply UI Pumpedüse Unit Injector Regelstangensensor Rack position sensor 9 10 7 Kipphebel Rocker arm Anlenkhebel Adjustment lever Regelstange Common rack Druckhalteventil Fuel check valve Kraftstoffrücklauf Fuel return line 9 10 11 12 13 14 15 6 13 3 1 2 Aktuator Control solenoid Kraftstoffkühler Fuel cooler 15 5 4 14 12 8 11 Page FUEL SYSTEM - 2 Z001019/0_7_July 2012
SERVICE MANUAL MARINE ENGINES 03 FUEL SYSTEM Functional Description When the ignition switch is turned, an electric fuel pump 1 is put into operation and sucks fuel from the fuel tank 2. This fuel is led via fuel filter 3 to the fuel pump. From the fuel pump, fuel is pumped to the engine block 4 and the unit injectors 5. Excess fuel not injected by the unit injectors is led via fuel cooler 6 back to the fuel tank. The operating pressure is controlled by pressure valve 7 (1,8 - 2,5 bar at idle). 8 anti-siphon valve; 9 baffles (depending on tank size) For fuel requirements, refer to chapter GENERAL Specification for fuel pipes 03.00 ill. 1 Minimum inside diameter: Recommended material: NOTE: 8 mm stainless steel or copper Min. inside diameter for hosepipes or PA-pipes is 10 mm. Rate of flow: > 240l/h +/-7 (in case of continuously operating pump) If additional filters are installed, the requirements of higher flow rates must to be considered. (filter dimension) NOTE: In case of pipe connections, pay special attention to the tightness of the suction pipe (all fittings and line before fuel pump)! Types of pipe connections 03.00 ill. 2 Z001019/0_7_July 2012 Page FUEL SYSTEM - 3
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STEYR MARINE ENGINES 4 CYLINDERS +
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PREFACE STEYR MOTORS GmbH has devel
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TABLE OF CONTENTS (MAIN ASSEMBLY GR
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05 Cooling system 05.01 Cooler, hea
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