Auxiliary Fuel Pump

Auxiliary Fuel Pump

Special tools, testers and auxiliary items required

• Torque Wrench (V.A.G 1331)

• Spring-type clip pliers (VAS 6362)

CAUTION!
• Observe safety precautions when working on fuel supply --> [ Fuel Supply System, Safety Precautions ] Fuel Supply System, Safety Precautions.

• Observe rules for cleanliness --> [ Clean Working Conditions ] Clean Working Conditions.

Always follow these instructions before and during work.

Removing

- Disconnect connector - 2 - from the exhaust pressure sensor 1 - 1 -.





- Remove bolt - 4 - and bracket - 3 - with the exhaust pressure sensor 1 - 1 - in direction of - arrow - and lay them aside (control wires remain connected).

- Disconnect connector - 1 - from auxiliary fuel pump.





- Unclip fuel hoses - 2 and 3 - from the bracket.

- Loosen hose clip with hose clip pliers (VAS 6362) and remove fuel supply line --> [ 6 Fuel Supply Line ] Fuel Filter Assembly Overview on the fuel filter.

- Disconnect connector from fuel temperature sensor - arrow -.





- Loosen hose clip - 1 - with hose clip pliers (VAS 6362) and remove fuel supply line at high pressure fuel pump.

- Seal lines so that fuel system is not contaminated by dirt etc.

- Remove bolts - arrows - and auxiliary fuel pump.





Installing

Install in reverse order of removal, noting the following:

• Route fuel hoses kink-free.

• Ensure fuel hoses are seated securely.

• Do not interchange supply and return lines (the return line is blue or has a blue marking, the supply line is white or has a white marking).

• Clip fuel and coolant hoses back into the retainers.

Tightening specifications:

• Bolt for exhaust pressure sensor 1 bracket: 8 Nm

• Bolts for auxiliary fuel pump: 20 Nm

- Fill fuel system --> [ Fuel System, Filling ] Fuel System, Filling.