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1. Fuel metering valve "N290": do not open.
2. Fuel injection pump: with fuel metering valve "N290"; for vehicles with CAMA, CAMB, CCWA, CCWB, CGKA, CGKB, CCLA engines, the first refueling should be performed after replacing the fuel injection pump (to prevent dry running); on vehicles with CAMA, CAMB, CCWA, CCWB, CGKA, CGKB, CCLA engines, after replacing the high-pressure fuel pump or the fuel pressure regulating valve "N276", it is necessary to perform re-adaptation in the tester.
3. Fuel rail: cylinder bank 1.
4. Fuel pressure regulating valve "N276": on cylinder bank 1; do not reuse; on vehicles with CAMA, CAMB, CCWA, CCWB, CGKA, CGKB, CCLA engines, after replacing the high-pressure fuel pump or the fuel pressure regulating valve "N276", it is necessary to perform re-adaptation in the tester.
5. Fuel pressure sensor "G247": 30 Nm; on cylinder bank 2.
6. Fuel rail: for 2 rows of cylinders.
7. Injectors: Injectors 1...6.
8. Fuel drain lines (fuel return. highways): return fuel. do not disassemble the lines; they can only be replaced together with the pressure-reducing valve; after replacement, let the engine run for 2 minutes at idle. move to remove air from the fuel. system, then check the return fuel lines for leaks. highways.
9. Pressure reducing valve: the task of the pressure reducing valve is to maintain residual pressure in the return fuel. the line pressure is always around 10 bar, which is necessary for the piezo injectors to operate normally; the pressure reducing valve should only be replaced as a set with the return fuel. highways; after replacement, it is necessary to let the engine run at idle. run for about 2 minutes to remove air from the fuel. syst.
10. Fuel radiator: installed on the bottom.
11. Fuel tank: with fuel pump "G6".
12. Heating valve.
13. Additional fuel pump "V393": installed only on engines: CAMA, CAMB, CCWA, CCWB, CGKA, CGKB, CCLA.
14. Fuel filter: replace fuel. filter.
[The original article is available on the online resource: audimanual.ru]