3.8. Fuel system The fuel is delivered by the fuel feed pump via the fuel filter to the injection pump and from there to the injection nozzles. The fuel is sprayed into the cylinders through nozzles fitted in screw-fit injection nozzle holders in the cylinder heads. Excessively delivered fuel and leak fuel from the nozzle flow through the return pipe back to the tank. A strainer is arranged ahead of the fuel feed pump. 1 2 5 1a 4 3 7 6 13 8 12 10 9 11 EA8O3004 1. Fuel filter 7. Delivery pipe 1a. Full water drain plug 8. Fuel pipe (manual pump filter) 2. Air bleeding screw (for fuel filter) 9. Fuel tank 3. Injection nozzle 10. Fuel return pipe 4. Overflow tube 11. Suction pipe 5.
Fuel pipe (filter injection pump) 12. Feed pump 6. Overflow valve 13. Injection pump - 16 -