Infiniti M35/M45 Y50. Manual - part 774

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

FL-7

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FL

Fuel hose

●

When installing fuel hose connector insert them fully until a click
sound of full stopper engagement is heard.

Main and Sub Fuel Level Sensor Unit

●

Face main and sub fuel level sensor units as shown in the fig-
ure, and install them with the knock pin on back aligned with pin
hole on fuel tank.

●

Install retainer so that its notch becomes parallel with the notch
on fuel tank.

●

Tighten retainer mounting bolts evenly.

Quick Connector

Connect quick connector as follows:

1.

Check the connection for damage or any foreign materials.

2.

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

3.

After connecting, make sure that the connection is secure by following method.

●

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

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

INSPECTION AFTER INSTALLATION

Use the following procedure to check for fuel leaks.

PBIC1579E

PBIC1065E

PBIC1652E

PBIC1653E

FL-8

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

1.

Turn ignition switch “ON” (with engine stopped), then check connections for leaks by applying fuel pres-
sure to fuel piping.

2.

Start engine and let it idle and make sure there are no fuel leaks at the fuel system connections.

Components

NBS005RC

Disassembly and Assembly

NBS005RD

CAUTION:

Sub fuel level sensor unit cannot be disassembled and should be replaced as a unit.

DISASSEMBLY

Remove fuel level sensor unit as follows.
1.

Disconnect harness connector.

●

Hold connector by fingers and pull it out, because there is no
stopper release tab.

2.

Using suitable tool, pull up tabs points as shown in the figure
(two points) to release the lock.

CAUTION:

Be careful not to damage it.

3.

After fixing tabs are disengaged, slide fuel level sensor unit out
in direction shown by the arrow.

CAUTION:

Do not disassemble fuel filter and fuel pump assembly.

1.

Fuel level sensor unit 

2.

Fuel filter and fuel pump assembly

PBIC1081E

PBIC1078E

PBIC1654E

PBIC1080E

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

FL-9

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ASSEMBLY

1.

Check for damage of fuel level sensor unit installation position on the side of fuel filter and fuel pump
assembly.

2.

Slide fuel level sensor unit until it aligns to installation groove, then insert it until it stops.

●

After inserting, apply force in reverse direction (removal direction) to ensure it cannot be pulled out.

3.

Connect the black (A) and white (B) harnesses so that they are
in the positions shown in the figure.

●

Securely insert harness connector until it stops.

PBIC3387E

FL-10

FUEL TANK

FUEL TANK

PFP:17202

Components

NBS005RE

Removal and Installation

NBS005RF

REMOVAL

WARNING:

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

FL-3, "General Pre-

cautions"

 .

●

Drain fuel from fuel tank if necessary. Refer to 

FL-4, "REMOVAL"

 .

●

Perform work on level place.

1.

Perform steps 2 to 7 of “REMOVAL” in “ FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP
ASSEMBLY” on main and sub fuel level sensor units. Refer to 

FL-4, "REMOVAL"

 .

2.

Remove exhaust front tube, center muffler and main muffler. Refer to 

EX-3, "EXHAUST SYSTEM"

 .

3.

Remove propeller shaft. Refer to 

PR-6, "REAR PROPELLER SHAFT"

 .

4.

Remove parking rear brake cables. Refer to 

PB-4, "PARKING BRAKE CONTROL"

 .

5.

Remove rear suspension assembly. Refer to 

RSU-5, "REAR SUSPENSION ASSEMBLY"

 .

6.

Remove fuel tank protector.

1.

Grommet

2.

Fuel filler cap

3.

Fuel tank mounting band

4.

Fuel tank protector

5.

Insulator

6.

Fuel tank

7.

Vent tube

8.

Vent hose

9.

Fuel filler tube

10. Fuel filler hose

11.

EVAP hose

12. Vent hose

PBIC3201E