High Pressure Pump Overview

High Pressure Pump Overview


Fuel system is under high pressure! Before opening the system, perform the procedure for releasing fuel pressure. Refer to => [ Releasing Pressure in High Pressure Area ] Releasing Pressure In High Pressure Area.






1 - Fuel Supply Line from the Fuel Tank

2 - High Pressure Pump Bolts

• First tighten the bolts diagonally hand-tight, then to 5 Nm and then to 20 Nm.

3 - High Pressure Pump

• There is an electric fuel pump located in the tank that supplies the fuel to the mechanical high pressure pump.

• When installing, make sure that no dirt enters the fuel system.

• The fuel system must be without pressure to install the high-pressure pump, releasing fuel pressure, refer to => [ Releasing Pressure in High Pressure Area ] Releasing Pressure In High Pressure Area

• Install the fuel lines free of tension

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

4 - O-ring

• Replace

5 - Roller Tappet

• Remains inserted in the vacuum pump after removing the high pressure pump

6 - Connecting Piece

• No replacement part, it is part of the high pressure pump

• Do not loosen

7 - Adapter

• 25 Nm

• There is an adapter between the connection and the fuel supply line, depending on the date of manufacture.

• If the adapter is there, replace it. Refer to the Electronic Parts Catalog (ETKA)

8 - High Pressure Fuel Line

• 20 Nm

• Do not install fuel line with tension

9 - High Pressure Pump Bolts

• First tighten the bolts diagonally hand-tight, then to 5 Nm and then to 20 Nm.

10 - Fuel Supply Line Connectors

• Replace

• Connection: 40 Nm

• Fuel supply line union nut tightening specification: 20 Nm

• Do not install the fuel line with tension. Make sure it is clean.