Infiniti Q45. Manual - part 582

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

FL-5

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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 tabs are connected to the connec-
tor. 

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.

–

Apply fuel pressure to fuel lines with turning ignition switch “ON” (with engine stopped). Then check for
fuel leaks at connections.

–

Start engine and rev it up and make sure for fuel leaks at connections.

Disassembly and Assembly

NBS0028J

DISASSEMBLY

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

1.

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

SFE562A

1.

Clip

2.

Pressure regulator

3.

Fuel feed hose

4.

Fuel filter

5.

Fuel feed hose

6.

Pump support rubber

7.

Fuel pump

8.

Fuel temperature sensor

9.

Fuel return hose

10. Pressure regulator housing

11. O-ring

12.

Fuel level sensor unit

PBIC1151E

PBIC1152E

FL-6

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

2.

Remove pump support rubber from fuel level sensor unit, fuel fil-
ter and fuel pump assembly.

3.

Using a screwdriver, disconnect harness connector from fuel
pump.

CAUTION:

Be careful not to damage it.

4.

Remove fuel pump.

5.

Remove fuel filter.

6.

Remove fuel return hose.

7.

Remove pressure regulator housing mounting bolts as shown.

PBIC1153E

PBIC1154E

PBIC1155E

PBIC1156E

PBIC1157E

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

FL-7

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8.

Disconnect pressure regulator housing from fuel level sensor
unit.

9.

Remove clip and disassemble pressure regulator.

ASSEMBLY

Note the following, and assemble in the reverse order of disassembly.

●

Install pressure regulator as follows:

1.

Install the clip to the groove of pressure regulator.

2.

Insert pressure regulator to the pressure regulator housing until
hole of clip aligns with protrusion on pressure regulator housing.

●

Install the clamps of each hose, avoiding interference with
bulges.

●

Securely connect harness connector of fuel pump.

●

Install pump support rubber between fuel pump and fuel level
sensor unit without looseness.

PBIC1158E

PBIC1159E

PBIC1160E

FL-8

FUEL TANK

FUEL TANK

PFP:17202

Removal and Installation

NBS0028K

REMOVAL

WARNING:

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

FL-2, "General Precau-

tions"

 .

1.

Follow step 1 to 5 in 

FL-3, "REMOVAL"

  and remove EVAP tubes from fuel tank.

●

Put mating marks on tubes and connectors for correct instal-
lation.

2.

Check the amount of fuel, and drain some if necessary.

3.

Remove fuel tubes and EVAP tubes from two clamps securing
pipings on fuel tank.

●

Put mating marks on tubes and clamps for correct installation.

4.

Remove the trunk front finisher. Refer to 

EI-60, "TRUNK ROOM TRIM & TRUNK LID FINISHER"

 .

5.

Remove drain hose from fuel filler neck cover reaching from inside trunk.

1.

Fuel tank mounting band

2.

Fuel tank

3.

O-ring

4.

Filler tube

5.

Drain hose

6.

Fuel filler neck cover

7.

Fuel filler cap

PBIC0961E

PBIC0962E