Nissan Frontier. Instruction — part 820
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ENGINE
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SECTION
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CONTENTS
FUEL SYSTEM
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
General Precaution . . . . . . . . . . . . ...
PREPARATION . . . . . . . . . . .
PREPARATION . . . . . . . . . . . . ...
Special Service Tool . . . . . . . . . . . .....
Commercial Service Tool . . . . . . . . . . ..
PERIODIC MAINTENANCE . . . . . . ..
FUEL SYSTEM . . . . . . . . . . . . .
Checking Fuel Line . . . . . . . . . . . . ...
REMOVAL AND INSTALLATION . . . .
FUEL TANK . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . ...
FUEL LEVEL SENSOR UNIT, FUEL FILTER
AND FUEL PUMP ASSEMBLY . . . . . .
Removal and Installation . . . . . . . . . . .
EVAP CANISTER . . . . . . . . . . . ..
Component Inspection . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
UNIT DISASSEMBLY AND ASSEMBLY .
FUEL LEVEL SENSOR UNIT, FUEL FILTER
AND FUEL PUMP ASSEMBLY . . . . . .
Disassembly and Assembly . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . . .
FL-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
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The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the
battery and wait at least three minutes before performing any service.
General Precaution
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WARNING:
When replacing fuel line parts, be sure to observe the following.
• Put a “CAUTION: FLAMMABLE” sign in the workshop.
• Be sure to work in a well ventilated area and furnish the workshop with a CO
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fire extinguisher.
• Do not smoke while servicing the fuel system. Keep open flames and sparks away from the work
area.
CAUTION:
• Before removing fuel line parts, carry out the following procedures:
- Put drained fuel in an explosion-proof container and put the lid on securely. Keep the container in
safe area.
- Release fuel pressure from the fuel lines. Refer to
(VQ40DE).
- Disconnect the battery negative terminal.
• Always replace O-rings and clamps with new ones.
• Do not kink or twist hoses when they are being installed.
• Do not tighten hose clamps excessively to avoid damaging hoses.
• Tighten high-pressure rubber hose clamp so that clamp end is 3 mm (0.12 in) from hose end.
• Ensure that clamp screw does not contact adjacent parts.
PRECAUTIONS
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< PRECAUTION >
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• After connecting the fuel tube quick connectors, make sure
the quick connectors are secure.
Ensure that the connector and resin tube do not contact any
adjacent parts.
• After installing tubes, make sure there is no fuel leakage at
connections in the following steps.
- Apply fuel pressure to fuel lines by turning ignition switch ON
(with engine stopped). Then check for fuel leaks at connec-
tions.
- Start engine, raise idle, and verify there are no fuel leaks at the
fuel system connections.
• Use only a Genuine NISSAN fuel filler cap as a replacement. If
an incorrect fuel filler cap is used, the MIL may come on.
• For servicing “Evaporative Emission System” parts. Refer to
FL-14, "Removal and Installation"
• For checking “On Board Refueling Vapor Recovery (ORVR)”
EC-469, "How to Detect Fuel Vapor Leakage"
(QR25DE),
EC-961, "How to Detect Fuel Vapor Leakage"
(VQ40DE).
PBIC1268E
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< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service Tool
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The actual shape of the tools may differ from those illustrated here.
Commercial Service Tool
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Tool number
(TechMate No.)
Tool name
Description
KV101207S0
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Unified fuel lock ring wrench
Removing and installing fuel tank lock ring
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(J-45722)
130 mm lock ring tool
JPBIA6384ZZ
LBIA0398E
Tool name
Description
Power tool
Loosening nuts, screws and bolts
PIIB1407E
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