With Aluminum Intake Manifold

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. Refer to => [ Releasing Pressure on High Pressure Side ] Service and Repair.

• Then wrap a clean cloth around the connection and relieve the residual pressure by carefully loosening the connection.

• 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).

• Removing and installing, refer to => [ High Pressure Pump ] High Pressure Pump.

2 Bolt, 9 Nm

3 Seal

• Replace

4 Locking bolt, 10 Nm

5 High pressure line

• Before loosening, disconnect ground cable at battery with ignition switched off.

• Connectors should not show any signs of damage.

• Do not change bend shape.

• High pressure lines, installing. Refer to => [ Hand-tighten the union nuts for the high-pressure lines. ] Service and Repair.

6 Fuel supply line

• Before loosening, disconnect ground cable at battery with ignition switched off.

• Connectors should not show any signs of damage.

• Do not change bend shape.

• High pressure lines, installing. Refer to => [ Hand-tighten the union nuts for the high-pressure lines. ] Service and Repair.

7 O-ring

• Replace

8 Roller tappet