Nissan Altima L32. Instruction — part 766

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

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- 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 the engine and let it idle and check for fuel leaks at the fuel system connections.

Inspection

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INSPECTION AFTER INSTALLATION

Use the following procedure to check for fuel leaks.
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.

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FUEL TANK

FUEL TANK

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Removal and Installation

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REMOVAL

WARNING:

Read “General Precautions” before working on the fuel system.

Refer to

FL-4, "General Precaution"

.

1. Disconnect the battery negative terminal.
2. Check the fuel level with the vehicle on a level surface. If the fuel

gauge indicates more than the level as shown (7/8 full), drain

the fuel from the fuel tank until the fuel gauge indicates a level at

or below as shown (7/8 full).

• In case the fuel pump does not operate, use the following pro-

cedure.

a. Insert fuel tubing of less than 25mm (0.98in) diameter into the

fuel filler tube through the fuel filler opening to drain fuel from the

fuel filler tube.

b. Disconnect the fuel filler hose from the fuel filler tube.
c.

Insert fuel tubing into the fuel tank through the fuel filler hose to

drain fuel from the fuel tank.

1.

Lock ring

2.

Fuel level sensor, fuel filter, and fuel
pump assembly

3.

Seal ring

4.

Fuel tank mounting straps

5.

Fuel tank protector

6.

Fuel tank

7.

Fuel filler hose

8.

Fuel filler hose

9.

Grommet

10. Fuel filler cap

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FUEL TANK

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• As a guide, the fuel level reaches or is less than the level on the fuel gauge as shown, when approxi-

mately 10 (2 5/8 US gal, 2 1/4 Imp gal) of fuel is drained from a full fuel tank.

3. Open the fuel filler cap to release the pressure inside the fuel tank.
4. Release fuel pressure from fuel line, Refer to

EC-550, "Inspection"

(QR25DE for California),

EC-1038,

"Inspection"

(except for California),

EC-1579, "Inspection"

(VQ35DE).

5. Remove rear seat bottom. For Coupe Refer to

SE-25, "Removal and Installation"

, For Sedan Refer to

SE-

53, "Removal and Installation"

6. Turn the four retainers 90

° in a clockwise direction and remove

the fuel pump inspection hole cover.

7. Disconnect the fuel level sensor, fuel filter, and fuel pump

assembly electrical connector, EVAP hose quick connector, and

fuel feed hose quick connector.

a. Disconnect the quick connectors 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, 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).

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FUEL TANK

• To keep the connecting portion clean and to avoid dam-

age and foreign materials, cover them completely with

plastic bags or something similar.

8. Remove the center exhaust tube, with muffler(s). Refer to

EC-1038, "Inspection"

(QR25DE),

EC-1579,

"Inspection"

(VQ35DE).

9. Disconnect the fuel filler hose and the recirculation hose at the fuel tank side.
10. Disconnect the three parking brake cable mounting brackets on each cable and position the cables out of

the way. Refer to

PB-6, "PEDAL TYPE : Removal and Installation"

(pedal),

PB-8, "LEVER TYPE :

Removal and Installation"

(lever).

11. Remove the fuel tank protector.
12. Disconnect the fuel tank mounting straps while supporting the fuel tank.
13. Remove the fuel tank.
14. If replacing the fuel tank, remove the fuel level sensor, fuel filter and fuel pump assembly to transfer to the

new fuel tank.

INSTALLATION

Install in the reverse order of removal paying attention to the following.

• Before tightening the fuel tank mounting straps, temporarily install the filler hose and the recirculation hose.

Tighten all fuel tank mounting strap bolts to specification, then tighten the hose clamps.

• 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 on the tube and the connector to make sure they are securely

connected.

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