Nissan Sentra. Instruction — part 497
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FUEL TANK
FUEL TANK
Exploded View
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Removal and Installation
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WARNING:
Be sure to read “General Precautions” when working on the fuel system. Refer to
.
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
1. Open fuel filler lid.
2. Open filler cap and release the pressure inside fuel tank.
3. Release the fuel pressure from the fuel lines. Refer to
.
1.
Fuel filler cap
2.
Grommet
3.
Fuel filler tube
4.
Clamp
5.
Fuel filler hose
6.
Fuel tank
7.
Fuel tank mounting band (RH)
8.
Fuel tank mounting band (LH)
9.
Vent hose
: Front
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4. Check the fuel level with the vehicle on a level surface. If the fuel
gauge indicates more than the level as shown (1/2 full), drain
the fuel from the fuel tank until the fuel gauge indicates a level at
or below as shown (1/2 full).
• In case the fuel pump does not operate, use the following pro-
cedure.
a. Insert fuel tubing of less than 25 mm (0.98 in) 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.
• As a guide, if the fuel tank is full the fuel level reaches or is less than the level on the fuel gauge as
shown, when approximately 25 (6-5/8 US gal, 5-1/2 Imp gal) of fuel is drained from a full fuel tank.
5. Disconnect park brake rear cables and position the rear park brake cables aside. Refer to
6. Remove the tunnel stay, front exhaust tube and sub muffler. Refer to
EX-5, "Removal and Installation"
7. Remove trunk floor carpet. Refer to
INT-43, "TRUNK SIDE FINISHER : Removal and Installation"
8. Remove rear seat cushion assembly. Refer to
SE-23, "Removal and Installation - Seat Cushion Assem-
9. Remove inspection hole cover.
10. Disconnect harness connector (1), fuel feed hose (3), and quick
connector (4) from fuel level sensor unit, fuel filter and fuel pump
assembly (2).
• Remove quick connector in the following procedures.
- Pinch quick connector square-part (A) with your fingers, and
pull out the quick connector (1) by hand.
- If quick connector and tube on sender unit are stuck, push and
pull several times until they move, and pull out.
CAUTION:
• Quick connector can be removed when the tabs are com-
pletely depressed. Do not twist it more than necessary.
• Do not use any tools to disconnected quick connector.
• Keep resin tube away from heat. Be especially careful
when welding near the resin tube.
• Prevent acid liquid such as battery electrolyte, etc. from
getting on resin tube.
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FUEL TANK
• Do not bend or twist resin tube during installation and disconnection.
• To keep the connecting portion clean and to avoid dam-
age and foreign materials, cover them completely with
plastic bags (A) or something similar.
• Do not insert plug, preventing damage on O-ring in quick
connector.
11. Remove the tunnel stay and center exhaust tube, without muffler. Refer to
12. Remove the fuel tank protector.
13. Disconnect the rear cables and position the rear cables aside. Refer to
PB-9, "Exploded View - Disc Brake"
(Disc brake).
14. Disconnect return line from filler hose.
15. Remove fuel filler hose.
16. Disconnect vent hose from fuel tank.
17. Support the center of the fuel tank (1) with a suitable jack (B)
and secure the fuel tank to the jack.
CAUTION:
• Securely support the fuel tank with a piece of wood (A).
• Fuel tank may be in an unstable condition, due to the
shape of the fuel tank bottom. Be sure to secure tank at all
times.
18. Remove fuel tank mounting bands (RH/LH).
19. Lower suitable jack carefully to remove fuel tank while holding it by hand.
CAUTION:
Fuel tank may be in an unstable condition, due to the shape of the fuel tank bottom. Be sure to
secure tank at all times.
20. Remove lock ring for fuel level sensor unit, fuel filter and fuel
pump assembly with Tool (A) by turning counterclockwise (if
necessary).
21. Remove fuel level sensor unit, fuel filter and fuel pump assembly (if necessary).
CAUTION:
• Do not bend float arm during removal.
• Do not pollute the inside by residue fuel. Draw out avoiding inclination by supporting with a
cloth.
• Do not cause impacts such by dropping when handling components.
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Tool number (A)
: KV991J0090 (J-46214) (shown)
: KV101208S0 ( — )
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INSTALLATION
Installation is in the reverse order of removal.
NOTE:
• Do not use any lubrication to aid with the installation of tubes and hoses.
• Before tightening the fuel tank mounting bands, install the filler hose to the length of 35 mm (1.38 in), all
other hoses to 25 mm (0.98 in).
• Tighten the clamps until the head of the bolt is on the paint mark on the clamp band.
• Tight mounting band bolts 1 and 2 to specification. Hand tighten
mounting band bolt 3. While pushing the tank in the direction
shown, tighten mounting band bolt 4 to specification then mounting
band bolt 3.
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, check that the connection is secure by following method.
• Visually confirm that the two tabs are connected to the connector.
• Pull (A) the tube and the quick connector (1) to check they are
securely connected.
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 check there are no fuel leaks at the fuel system connections.
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