Suction Jet Pump
Suction Jet Pump
Special tools, testers and auxiliary items required
• Wrench (T10202)
Removing
Observe safety precautions. Refer to => [ Safety Precautions ] Fuel Supply System.
Observe rules for cleanliness. Refer to => [ Clean Working Conditions ] Fuel Supply System.
CAUTION!
• To remove the suction jet pump, the fuel tank may only be filled to a maximum of 1/4. Empty fuel tank if necessary.
• Observe safety precautions when disconnecting the battery.
All except Audi RS4:
- Push the cover over the battery toward the right - arrow 1 - and remove it upward - arrow 2 -.
- With ignition switched off, disconnect Battery Ground (GND) cable - arrow -.
Audi RS4:
- Raise luggage compartment floor covering and secure.
- With ignition switched off, disconnect Battery Ground (GND) cable - arrow -.
All:
- Open fuel filler flap briefly and then close again.
- Remove rear seat bench.
- Remove cover - arrows - for right locking flange.
Audi RS4:
- Free up electrical connector - arrow - for Fuel Pump (FP) Control Module (J538) and disconnect.
All:
- Disconnect electrical harness connector - arrow - at right locking flange.
- Mark the fuel return line - 1 - and fuel supply line - 2 -.
CAUTION!
Fuel system is under pressure! Before opening system, place clean rags around the connection. Then release pressure by carefully loosening the connection.
- Pull both lines from locking flange, by pressing the release buttons.
CAUTION!
Locking flange may only be opened when fuel tank is maximum 1/4 full. Otherwise, a large amount of fuel will spill out.
- Remove locking ring with Wrench (T10202).
- Remove locking flange and seal from opening in fuel tank and lay aside the locking flange with lines still connected.
- Disconnect the suction jet pipe - 1 - to suction jet pump by pressing release button.
- Disengage fuel delivery line - 2 -.
- Remove cover - arrows - for left locking flange.
- Disconnect electrical harness connector - arrow - at left locking flange.
- Remove locking ring with Wrench (T10202).
- Pull locking flange and sealing ring from opening of fuel tank.
- Carefully pull the locking flange - 1 - with Fuel Level Sensor 2 (G169) with suction jet pump - 2 - toward the left and out of the fuel tank opening.
• When removing, be sure not to bend floater arm of Fuel Level Sensor 2 (G169).
Installing
Installation is in reverse order of removal, note the following:
• Replace seals.
• When inserting, be sure not to bend floater arm of Fuel Level Sensor 2 (G169).
- Push suction jet pump with lines at left side of vehicle into fuel tank opening.
- Reach into the fuel tank opening on right side of vehicle and pull the suction jet pump with lines into installed position.
- Attach the fuel delivery line - 2 -.
- Push the suction jet pipe - 1 - onto the suction jet pump until it engages audibly.
Make sure fuel hoses are routed correctly:
• The fuel supply line - 1 - must be routed between the guide tube - 4 - and the supports - 2 - for fuel return line. Also, it must be routed around the outside of the guide tube - 3 -.
- Insert the guide tubes - 3 - and - 4 - of the locking flange into the guide holes - arrows - of the fuel delivery unit.
• To improve clarity, the fuel delivery unit is shown without the fuel tank.
- Install the new locking flange seal dry.
- Press locking flange down against spring pressure and bring it into installation position.
• Tab - 2 - on locking flange must lie between tabs - 1 - and - 3 - on fuel tank.
- Tighten right locking ring.
- Install fuel supply line - 2 - and fuel return line - 1 - according to the marking.
- Connect electrical harness connector.
- Install the new locking flange seal dry.
- Press locking flange down against spring pressure and bring it into installation position.
• Tab - 2 - on locking flange must lie between tabs - 1 - and - 3 - on fuel tank.
• - Arrow - points in direction of travel.
- Tighten left locking ring.
- Connect battery. Observe safety precautions after connecting battery.
Tightening Specifications
