Fuel Pump: Locations

High Pressure Pump, Assembly Overview

The opened fuel system is shown in this assembly overview. Therefore:

CAUTION:
- Before opening high pressure components of the fuel injection system, pressure must be relieved to residual pressure.
- Then wrap a clean rag around connection and relieve residual pressure by carefully loosening connection.

NOTE: Illustration depicts left high pressure pump.







1 - High pressure pump
- Bank 1 with Fuel Metering Valve N290
- Bank 2 with Fuel Metering Valve 2 N402
2 - 9 Nm
3 - Seal
- Replace
4 - Locking bolt, 10 Nm
5 - High-pressure line
- Before loosening, disconnect Ground (GND) cable at battery with ignition switched off
- Connectors should not show any signs of damage
- Do not change bent shape
- High pressure lines, installing
6 - Fuel supply line
- Before loosening, disconnect Ground (GND) cable at battery with ignition switched off
- Connectors should not show any signs of damage
- Do not change bend shape
- High pressure lines, installing
7 - O-ring
- Replace
8 - Roller tappet