High Pressure Pump Assembly Overview

High Pressure Pump Assembly Overview





1 High Pressure Pump

• The fuel metering valve is installed in the right high pressure pump (cylinder bank 1).

• The fuel metering valve 2 is installed in the left high pressure pump (cylinder bank 2).

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

2 Bolt, 9 Nm

3 Seal

• Always replace.

4 Locking Bolt, 10 Nm

• The low fuel pressure sensor is installed in place of the locking bolt in the left high pressure pump (cylinder bank 2) through MY 2009.

5 High Pressure Line, 25 Nm

CAUTION!
• Before opening the high pressure components of the fuel injection system, the pressure must be relieved to a residual pressure. Refer to => [ High Side Fuel Pressure, Reducing ] Service Precautions.

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

• Observe safety precautions when disconnecting the battery.

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

• Connectors should not show any signs of damage.

• Do not change the bend shape.

6 Fuel Supply Line, 25 Nm

CAUTION!
• Before opening the high pressure components of the fuel injection system, the pressure must be relieved to a residual pressure. Refer to => [ High Side Fuel Pressure, Reducing ] Service Precautions.

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

• Observe safety precautions when disconnecting the battery.

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

• Connectors should not show any signs of damage.

• Do not change the bend shape.

7 O-ring

• Always replace.

8 Roller Tappet