Fuel delivery unit, removing and installing: Installing

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2008 Audi S4, 2008 Audi RS 4, 2008 Audi A4, 2007 Audi S4, and 2007 Audi RS 4. However, it is still accessible from the selected car via links, so may be relevant.

Installation is in reverse order of removal. Note the following:

NOTE:

Replace seal.
When inserting fuel delivery unit, be sure not to bend Fuel Level Sensor G.
Make sure fuel hoses are seated securely.

Insert fuel delivery unit into fuel tank with locking flange set aside.
Attach fuel delivery line - 2 -.
Push suction jet pipe - 1 - onto suction jet pump until it engages audibly.

Make sure fuel hoses are routed correctly:

Fig 1: Identifying Fuel Supply Line, Guide Tube & Supports For Fuel Return Line

Courtesy of VOLKSWAGEN UNITED STATES, INC.

The fuel supply line - 1 - must be routed between guide tube - 4 - and supports - 2 - for fuel return line. Also, it must be routed around outside of guide tube - 3 -.

Insert guide tubes - 3 - and - 4 - of locking flange into guide holes - arrows - of fuel delivery unit.

NOTE:

To improve clarity, the fuel delivery unit is shown without the fuel tank.

Install new locking flange seal dry.
Press locking flange down against spring pressure and bring it into installation position.

Fig 2: Identifying Tab On Locking Flange Lie Between Tabs On Fuel Tank

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Tab - 2 - on locking flange must lie between tabs - 1 - and - 3 - on fuel tank.

Fig 3: Removing/Installing Locking Ring With Wrench T10202

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Tighten locking ring.
Connect battery. Observe safety precautions after connecting battery →
- 27 BATTERY, STARTER, GENERATOR, CRUISE CONTROL
- 27 BATTERY, STARTER, GENERATOR, CRUISE CONTROL for ELECTRICAL EQUIPMENT, CABRIOLET
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After replacing fuel delivery unit, there should be a fuel pump adaptation on vehicles with 4-cyl. TFSI engine → Fuel pump adaptation after replacing fuel delivery unit, (vehicles with 4-cyl. TFSI engine) .