Fuel system
1. Bolt: 10 Nm.
2. High pressure line: 25 Nm; between the high pressure pump and the fuel. ramp.
3. Return fuel. highways: to the fuel tank; reverse fuel. the main line must not be bent, damaged or clogged; reverse fuel. do not disassemble the lines; they can only be replaced together with the pressure-reducing valve; the task of the pressure reducing valve is to maintain residual pressure in the return fuel. the main line pressure is always around 10 bar; this is necessary for the injectors to operate normally; after replacement, let the engine idle for two minutes to remove air from the fuel. system, then check the return fuel lines for leaks. highways.
4. Bolt: 10 Nm.
5. High pressure pipes: 25 Nm; between the fuel distributor and the injectors; do not change places; install freely.
6. Fuel pressure regulating valve "N276": 80 Nm; do not reuse.
7. Fuel rail.
8. Fuel supply. highway.
9. High pressure pump: with fuel metering valve "N290" (do not open) after replacement, the first fuel refueling should be performed. syst. (be sure to avoid working with fuel. dry system).
10. Bolt: 20 Nm: long bolts tighten 180°, short bolts tighten 90°.
11. Bolt: 20 Nm.
12. High pressure pump toothed belt pulley.
13. Nut: 95 Nm.
14. Hub: with sensor crown: use counter support "T10051" for unscrewing and tightening; to remove, use the "T40064" puller.
15. Fuel pressure sensor "G247": 100 Nm.
16. Bolt: 22 Nm.
17. Clamp: disassembled injectors and clamps to be assembled must be reinstalled in the cylinders exclusively in the same places; if the nozzle is replaced, the clamp must also be replaced.
18. Hexagonal flange nut of clamp bracket: 10 Nm.
19. System unit cover. injection.
20. Bolt: 5 Nm.
21. Injector: Removed injectors, high pressure lines and clamps that are reinstalled must be installed exclusively on the same place (cylinder).
Clamp mounting position
