Removal and Installation

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

Removal and Installation

NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

REMOVAL


WARNING:
Revision: March 20122013 Infiniti JX
Read "General Precautions" before working on the fuel system.


Refer to "General Precaution" General Precautions.
1.Unscrew the fuel filler cap to release the pressure inside the fuel tank.
2.Release the fuel pressure from the fuel lines. Refer to "Work Procedure" Testing and Inspection.
3.Disconnect the battery negative terminal. Refer to "Removal and Installation" Removal and Installation.
4.Remove the 2nd row LH front seat track covers. Refer to "Exploded View" Exploded View.
5.Position the LH side of the 2nd row seat forward to gain access to the rear seat track covers. Refer to SE82, "Exploded View".
6.Remove the 2nd row LH rear seat track covers. Refer to "Exploded View" Exploded View.
7.Position and secure the carpet to gain access to the fuel pump inspection hole cover.

CAUTION:
Cover the immediate area surrounding the fuel pump inspection hole cover with plastic to avoid gasoline damage to the carpet.
8.Remove the center floor duct (LH). Refer to "CENTER FLOOR DUCT : Removal and Installation Center Floor Duct" Removal and Installation - Center Floor Duct.





9.Turn the four retainers (A) 90 degrees to disengage the clips and remove the fuel pump inspection hole cover.










10.Disconnect the fuel level sensor, fuel filter, and fuel pump assembly electrical connector (A), EVAP hose connector (C), and the fuel feed hose connector (B) from the fuel level sensor unit, fuel filter, and fuel pump assembly.










Disconnect the quick connector as follows:
- Hold the sides of the connector, push in tabs and pull out the tube.
- If the connector and the tube are stuck together, push and pull several times until they start to move. Then disconnect them by pulling.

CAUTION:
- The tube can be removed when the tabs are completely depressed. Do not twist it more than necessary.
- Do not use any tools to remove the quick connector.
- Keep the resin tube away from heat. Be especially careful when welding near the tube.
- Prevent acid liquid such as battery electrolyte, etc. from getting on the resin tube.
- Do not bend or twist the tube during installation and removal.
- Only when the tube is replaced, remove the remaining retainer on the tube or fuel level sensor, fuel filter, and fuel pump assembly.
- When the tube or fuel level sensor, fuel filter, and fuel pump assembly is replaced, also replace the retainer with a new one (green colored retainer).
Revision: March 20122013 Infiniti JX





- To keep the connecting portion clean and to avoid damage and foreign materials, cover them completely with plastic bags or something similar.
11.Remove the lock ring from the fuel level sensor, fuel filter, and fuel pump assembly.





- Remove the lock ring using Tool (A).
Tool number: ( -) J-45747










- Prior to removal, observe the alignment between the fuel level sensor, fuel filter, and fuel pump assembly tabs (A) and the matching marks (C) on the fuel tank as shown. This alignment is necessary for proper installation.










12.Raise the fuel level sensor, fuel filter, and fuel pump assembly high enough to gain access and disconnect the transfer tube connector (A).

CAUTION:
Do not pull on the transfer tube or damage to the fuel tank can occur.
13.Remove the fuel level sensor, fuel filter, and fuel pump assembly and O-ring. Discard the O-ring.

CAUTION:
- Do not bend the float arm during removal.
- Do not reuse the O-ring.

INSPECTION AFTER REMOVAL

Inspect the fuel level sensor, fuel filter, and fuel pump for any defects and foreign materials. Replace as necessary.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:
Do not reuse O-ring.
Revision: March 20122013 Infiniti JX





- Connect the transfer hose connector to the fuel level sensor, fuel filter, and fuel pump. Inspect through the opening of the fuel tank and make sure that the transfer hose is routed as shown.

CAUTION:
Make sure that the transfer hose does not interfere with the float arm assembly.










- Align the tabs (A) of the fuel level sensor, fuel filter, and fuel pump assembly to the matching marks (C) of the fuel tank for proper installation.










- Connect the quick connector as follows:
- Check the connection for damage or any foreign materials.
- Align the connector with the tube, then insert the connector straight into the tube until a click is heard.
- After the tube is connected, make sure the connection is secure by performing the following checks:
- Pull the tube and the connector to make sure they are securely connected.
Revision: March 20122013 Infiniti JX





- Visually confirm that the two retainer tabs are connected to the quick connector.

INSPECTION AFTER INSTALLATION

Use the following procedure to check for fuel leaks.
1.Turn the ignition switch to ON (without starting the engine) to apply fuel pressure to the fuel system, then check the connections for fuel leaks.
2.Start engine, raise idle, and verify there are no fuel leaks at the fuel system connections.
Revision: March 20122013 Infiniti JX