Infiniti F50. Manual - part 561

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

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FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

PFP:17042

Removal and Installation

EBS0024O

REMOVAL

WARNING:

Be sure to read “General Precautions” when working on fuel system. Refer to 

FL-2, "General Precau-

tions"

 .

1.

Release fuel pressure. Refer to 

EC-48, "FUEL PRESSURE RELEASE"

 .

2.

Open fuel filer lid.

3.

Open the filler cap and release the pressure inside the fuel tank.

4.

Open the trunk lid and remove the trunk front finisher.

5.

Disconnect battery ground cable.

6.

Disconnect the harness connector and fuel feed tube.

PBIC0957E

1.

O-ring

2.

Fuel level sensor unit, fuel filter and 
fuel pump assembly

PBIC0958E

FL-4

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

●

Disconnect the quick connectors of the fuel tube as follows.

NOTE:
The followings are also applied to the quick connector of EVAP
tube.

●

Hold the sides of the connector, push in tubs 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 quick connector can be disconnected when the
tabs are completely depressed. Do not twist it more
than necessary.

●

Do not use any tools to disconnect the quick connec-
tor.

●

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 resin tube during installation
and disconnection.

●

Do not remove the remaining retainer on the hard tube
(or the equivalent) except when the resin tube or the
retainer is replaced.

●

When the resin tube or hard tube (or the equivalent) is replaced, also replace the retainer with
a new one. 

●

To keep clean the connecting portion and to avoid
damage and foreign materials, cover them completely
with plastic bags or something similar.

7.

Remove fuel level sensor unit, fuel filter and fuel pump assem-
bly.

CAUTION:

●

Do not bend the float arm during removal. 

●

Avoid impacts such as falling when handling compo-
nents.

INSPECTION AFTER REMOVAL

Make sure the fuel pump strainer is free from foreign materials. If any are found, remove them.

INSTALLATION

●

Install in the reverse order of removal.

SFE562A

Retainer color: Green

PBIC1268E

PBIC0163E

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

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●

Set the fuel tube connector of the fuel level sensor unit facing
the right side of the vehicle. Install it by matching the notches on
its outer circumferences and the fuel tank.

●

Tighten the mounting bolts evenly.

CAUTION:

Use the genuine bolts or equivalent.

●

Connect the quick connector as follows.

1.

Check the connection for damage and foreign materials.

2.

Align the connector with the tube, then insert the connector
straight into the tube until a click is heard.

3.

After connecting, make sure that the connection is secure by fol-
lowing the steps below.

a.

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

b.

Pull the tube and the connector to make sure they are securely
connected.

INSPECTION AFTER INSTALLATION

●

After installing tubes, make sure there is no fuel leakage at connections in the following steps.

–

1) Apply fuel pressure to fuel lines with turning ignition switch ON (with engine stopped). Then check for

fuel leaks at connections.

–

2) Start the engine and rev it up and check for fuel leaks at connections.

Disassembly and Assembly

EBS0025C

PBIC0959E

SFE562A

PBIC1151E

1.

Clip

2.

Pressure regulator

3.

Fuel feed hose

4.

Fuel filter

5.

Fuel feed hose

6.

Pump support rubber

7.

Fuel pump

8.

Temperature sensor

9.

Fuel return hose

10. Pressure regulator housing

11. O-ring

12. Fuel level sensor unit

FL-6

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

DISASSEMBLY

While referring to the diagram, remove components starting from the fuel pump.

1.

Pull out the fuel level sensor unit, fuel filter and fuel pump
assembly.

2.

Remove the pump support rubber from the fuel level sensor unit,
fuel filter and fuel pump assembly.

3.

Using a screwdriver, disconnect harness connector from fuel
pump.

4.

Remove fuel pump.

5.

Remove fuel filter.

PBIC1152E

PBIC1153E

PBIC1154E

PBIC1155E