Injectors and High Pressure Line Overview

Injectors and High Pressure Line Overview






1 Copper Sealing Ring

• Replace

2 O-ring

• Replace

3 Injector

• Replace the following components and seals or O-rings with each removal and installation: "Copper washer" "injector shaft O-ring" "injector return O-ring"

• The following components and seals and/or O-rings must be replaced whenever an injector is replaced: "tensioning bracket", "copper washer", "injector shaft O-ring" and "injector return O-ring".

• Before reusing the "injector high pressure line", check the sealing cones for damage such as scratches or corrosion. Replace if damaged

• Install any removed injectors, injector high pressure lines and tensioning brackets in their original locations.

• Removing and installing, refer to => [ Fuel Injectors ] Fuel Injectors

4 Hex Shoulder Nut

• 10 Nm

• For the tension bracket

5 High-Pressure Lines

• Pay attention to cleanliness

• Do not change the shape of the line

• Removing and installing, refer to => [ High Pressure Lines, Installing ] High Pressure Lines, Installing

6 Fuel Rail

• The fuel pressure regulator valve (N276) is bolted into the cylinder bank 1 fuel rail.

• The fuel pressure sensor (G247) is bolted into the cylinder bank 2 fuel rail.

7 Seals

• Replace

8 Banjo Bolt

• 25 Nm

9 Distribution Piece

10 High-Pressure Line

• 25 Nm

• From the high pressure pump

• Pay attention to cleanliness

• Do not change the shape of the line

11 High-Pressure Line

• 25 Nm

• From the opposite fuel rail

• Pay attention to cleanliness

• Do not change the shape of the line

12 Bolt

• 22 Nm

13 Fuel Return Lines

• Do not disassemble the fuel return lines. Replace them completely with the pressure retention valve.

• Bleed the fuel system after replacing, refer to => [ Fuel Tank, Filling with Fuel after Installing High Pressure Pump ] General Information.

14 O-ring

• Replace

15 Bolt

• 5 Nm

• Injector unit cover to cylinder head cover

16 Tensioning Bracket

• Injectors and tensioning brackets that have been removed and are being reinstalled may only be installed in the same cylinder.

• If the injector unit (injector) is being replaced, then the tension bracket must also be replaced.