Qashqai J11. Fuel system (HRA2DDT, K9K, MR20DD) — part 2
FUEL SYSTEM
FL-17
< PERIODIC MAINTENANCE >
[MR20DD]
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PERIODIC MAINTENANCE
FUEL SYSTEM
Inspection
INFOID:0000000010683783
Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leaks, cracks, damage, loose connections, chafing or deterio-
ration.
If necessary, repair or replace damaged parts.
Quick Connector
INFOID:0000000010683784
CAUTION:
• After connecting fuel tube quick connectors, make sure quick connectors are secure.
• Ensure that connector and resin tube do not contact any adjacent parts.
A
: Engine
B
: Fuel line
C
: Fuel tank
JPBIA0129ZZ
FL-18
< REMOVAL AND INSTALLATION >
[MR20DD]
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
REMOVAL AND INSTALLATION
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
Exploded View
INFOID:0000000010714502
REMOVAL
CAUTION:
Never remove or disassemble parts unless instructed as shown in the figure.
DISASSEMBLY
Lock ring
Sub fuel level sensor assembly
O-ring
Fuel tank
Fuel level sensor unit, fuel filter and fuel pump
assembly
: Vehicle front
Tightening must be done following the Installation procedure. Refer to
FL-19, "Removal and Installation"
.
: Always replace after every disassembly.
JPBIA6876GB
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
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< REMOVAL AND INSTALLATION >
[MR20DD]
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Removal and Installation
INFOID:0000000010769779
REMOVAL
Fuel Level Sensor Unit
WARNING:
Be sure to read “General Precautions” before working on the fuel system. Refer to
.
1.
Release the fuel pressure from the fuel lines. Refer to
2.
Check fuel level on a level ground. If the fuel level is at 1/2 or higher, drain enough fuel so that the level on
the fuel gauge is at half or below.
• This is to prevent overflow of fuel from the tank when the fuel level sensor unit, fuel filter and fuel pump
assembly is removed
• In the event of malfunction in fuel pump, insert a hose measuring less than 20mm (0.79 in) in diameter
into fuel filler tube through fuel filler opening to draw fuel from filler tube.
- Disconnect fuel filler hose from fuel filler tube. Refer to
- Insert hose into fuel tank through fuel filler hose to draw fuel from fuel tank.
3.
Disconnect batterie cable from negative terminal.
4.
Open fuel filler lid and filler cap to release the pressure inside fuel tank.
5.
Remove rear seat. Refer to
SE-35, "Removal and Installation"
6.
Remove inspection hole cover.
• Using a screwdriver, remove it by turning clips clockwise by 90 degrees.
7.
Disconnect harness connector (3) and quick connectors (4).
Fuel filter and fuel pump assembly
Fuel level sensor unit
JPBIA6877ZZ
Guideline
: Draw approximately 32 liters (7 Imp gal) from a full-tank con-
dition.
1
: Fuel feed tube
2
: Fuel level sensor unit, fuel filter and fuel pump assembly
: Vehicule front
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< REMOVAL AND INSTALLATION >
[MR20DD]
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
• Remove quick connector in the following procedures.
- NOTE:
• The figure show the process of quick connector disconnection. Parts arround quick connector could
have a different shape compare to the figure.
- Hold the sides of quick connector, press tabs and pull out fuel
feed tube.
- If quick connector sticks to tube of main fuel level sensor unit,
push and pull quick connectors several times until they start to
move. Then disconnect them by pulling.
CAUTION:
• Quick connector can be disconnected when the tabs are
depressed completely. Never twist it more than neces-
sary.
• Never 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.
• Never bend or twist resin tube during installation and dis-
connection.
• Never insert plug, preventing damage to O–ring in quick
connector.
• To keep the connecting portion clean and to avoid dam-
age and foreign materials, cover them completely with
plastic bags or something similar.
8.
Using lock ring wrench [SST: KV99104700], remove lock ring.
NOTE:
For reference when installing, put a matching mark on lock ring,
fuel level sensor unit and fuel tank.
A
: Push in tabs
B
: Pull
E1BIA1191ZZ
A
: Connection (cross-section)
B
: Disconnection (cross-section)
C
: Quick connector
D
: Hard tube
E1BIA1190ZZ
PBIC0240E
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
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< REMOVAL AND INSTALLATION >
[MR20DD]
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9.
Raise fuel level sensor unit.
CAUTION:
• Never bend float arm during removal.
• Never pollute the residual fuel inside of the tank. Draw out
avoiding inclination by supporting with a cloth.
• Never cause impacts such by dropping when handling
components.
10. Separate fuel tube as per the following steps to remove fuel level sensor unit.
• Pinch quick connector (A) square-part with your fingers, and
pull out the quick connector by hand.
• If quick connector and tube on sender unit are stuck, push
several times until they move, and pull out.
NOTE:
When separating the fuel tube, tie a diesel-resistance rope to
the tip of the fuel tube and leave the rope on the fuel tank side
to easily pull the fuel tube for installation.
• Disconnect harness connector (A).
Sub Fuel Level Sensor Assembly
1.
Remove fuel level sensor unit, fuel filter and fuel pump assembly.
2.
Use lock ring wrench [SST: KV99104700] to remove lock ring.
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PBIC0240E
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< REMOVAL AND INSTALLATION >
[MR20DD]
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
3.
Remove sub fuel level sensor assembly (1).
CAUTION:
• Never disassemble a fuel tube (2) from sub fuel sensor
assembly.
• Never bend float arm during removal.
• Never pollute the residual fuel inside of the tank. Draw out
avoiding inclination by supporting with a cloth.
• Never cause impacts such by dropping when handling
components.
NOTE:
Tie a gasoline-resistance rope to a tip of the tube. Draw and
leave the rope to the fuel tank side so that the rope can be the
guide for installation.
INSTALLATION
Note the following, and install in the reverse order of removal.
Sub Fuel Level Sensor Assembly
1.
Install O-ring to fuel tank without any twist.
2.
Using the rope left on the fuel tank side at removal, run the fuel tube inside the fuel tank to install the sub
fuel level sensor assembly to the fuel tank.
CAUTION:
• Never bend float arm during installation.
• To install, fuel tube (1) must run to the front (
) of the vehicle to avoid the interference with the
float arm (2), as shown in the figure.
3.
Install sub fuel level sensor assembly with its matching mark (A)
aligned with fuel tank matching mark (B) as shown in the figure.
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FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
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< REMOVAL AND INSTALLATION >
[MR20DD]
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4.
Use lock ring wrench [SST: 99104700] to install lock ring as per
the following steps.
a.
Align the “ ” mark located on the rim of the lock ring (1) with the
“MAX” position of the fuel tank. Press the locking ring horizon-
tally to prevent the lock ring from tilting.
NOTE:
• Figure shows fuel level sensor unit, fuel filter and fuel pump
assembly side of fuel tank.
• For sub fuel level sensor assembly matching mark is located
on the fuel tank of the vehicle front side.
b.
After aligning the “ ” mark with “MAX” turn the lock ring counter-
clockwise until the lock ring thread engages with the tank.
Turn the lock ring roughly 540
°
until the “ ” mark is between
"MIN" and "MAX" position.
c.
Check that the “ ” mark of the lock ring (1) is between MIN and
MAX [i.e. within (A)].
NOTE:
• Figure shows fuel level sensor unit, fuel filter and fuel pump
assembly side of fuel tank.
• For sub fuel level sensor assembly matching mark is located
on the fuel tank of the vehicle front side.
Fuel Level Sensor Unit
1.
Temporarily install the O-ring to the fuel level sensor unit.
CAUTION:
Do not reuse O-ring.
2.
Connect the fuel tube as per the following steps.
• Insert the quick connector (A) straight to the fuel level sensor
unit.
• Judge a good fit from connecting sound and tactile feedback.
• Pull the fuel tube by hand to check a secure fit.
PBIC0240E
Tightening angle
: Approximately 540
°
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< REMOVAL AND INSTALLATION >
[MR20DD]
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
3.
Connect harness connector (A).
4.
Insert the fuel level sensor unit to the fuel tank, and then install the temporarily installed O-ring (Step 1) to
the opening of the fuel tank.
CAUTION:
• Never bend float arm during installation.
• To install, fuel tube (1) must run to the front (
) of the vehicle to avoid the interference with the
float arm (2), as shown in the figure.
5.
Install fuel level sensor unit with its matching mark (A) aligned
with fuel tank matching mark (B) as shown in the figure.
6.
Use lock ring wrench [SST: KV99104700] to install lock ring as
per the following steps.
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PBIC0240E
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
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< REMOVAL AND INSTALLATION >
[MR20DD]
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a.
Align the “ ” mark located on the rim of the lock ring (1) with the
“MAX” position of the fuel tank. Press the locking ring horizon-
tally to prevent the lock ring from tilting.
b.
After aligning the “ ” mark with “MAX” turn the lock ring counter-
clockwise until the lock ring thread engages with the tank.
Turn the lock ring roughly 540
°
until the “ ” mark is between
"MIN" and "MAX" position.
c.
Check that the “ ” mark of the lock ring (1) is between MIN and MAX [i.e. within (A)].
7.
Connect quick connector of fuel feed tube as per following procedures.
a.
Check the connection for damage or any foreign materials.
b.
Align the connector with the tube, then insert the connector straight into the tube until a “click” sound is
heard.
c.
After connecting, check that the connection is secured with following procedures.
• Visually confirm that the two tabs are connected to the connector.
• Pull (A) the tube and the connector to check that they are
securely connected.
8.
Connect harness connector.
Inspection Hole Cover
• Before installing inspection hole cover, check that the connecting part has no fuel leakage.
1.
Install inspection hole covers with the front mark (arrow) facing front of vehicle.
2.
Lock clips by turning counterclockwise.
INSPECTION AFTER INSTALLATION
Check that there is no fuel leakage at connections in the following steps.
• Start engine and rev it up and check that there is no fuel leakage at connections.
Inspection
INFOID:0000000010714505
INSPECTION AFTER INSTALLATION
Use the following procedure to check for fuel leakage.
1.
Turn ignition switch “ON” (with engine stopped), then check connections for leakage by applying fuel pres-
sure to fuel piping.
2.
Start engine. Then let it idle and check that there is no fuel leakage at the fuel system connections.
Tightening angle
: Approximately 540
°
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< REMOVAL AND INSTALLATION >
[MR20DD]
FUEL TANK
FUEL TANK
Exploded View
INFOID:0000000010714506
Removal and Installation
INFOID:0000000010714507
REMOVAL
WARNING:
Be sure to read “General Precautions” when working on the fuel system. Refer to
.
1.
Perform the steps 1 to 7 of “REMOVAL” in “ FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL
PUMP ASSEMBLY”. Refer to
FL-19, "Removal and Installation"
.
2.
Drain fuel from fuel tank if necessary. Refer to
FL-19, "Removal and Installation"
CAUTION:
• Fuel tank will become unstable whilst removing. Fuel should be drained from tank prior to
removal to reduce this effect.
• Situate vehicle on a flat and solid surface.
3.
Remove main muffler. Refer to
Fuel tank band (RH)
Fuel tank band (LH)
Protector
Fuel tank
Clamp
Vent hose
Clamp
Fuel filler hose
Fuel filler tube
Grommet
Fuel filler cap
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
JPBIA6889GB
FUEL TANK
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< REMOVAL AND INSTALLATION >
[MR20DD]
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4.
Remove rear propeller shaft. Refer to
DLN-186, "Removal and Installation"
5.
Remove protector from fuel tank.
6.
Disconnect vent hose
, EVAP tube
, and fuel filler hose
at rear side of fuel tank.
• Instruction for quick connector
of EVAP tube.
CAUTION:
• Quick connector can be disconnected when the tabs (1)
are depressed completely. Never twist it more than nec-
essary.
• Never 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.
• Never bend or twist resin tube during installation and
disconnection.
• Never insert plug, preventing damage to O–ring in quick
connector.
• To keep the connecting portion clean and to avoid dam-
age and foreign materials, cover them completely with
plastic bags or something similar.
: Vehicle front
JPBIA0456ZZ
E1BIA1192ZZ
A
: Connection (cross-section)
B
: Disconnection (cross-section)
C
: Quick connector
D
: Hard tube
E1BIA1190ZZ
FL-28
< REMOVAL AND INSTALLATION >
[MR20DD]
FUEL TANK
7.
Support the lower part of fuel tank
with transmission jack (A).
CAUTION:
Support the position that fuel tank mounting bands nev-
erengage.
8.
Remove fuel tank band (RH and LH).
9.
Lower transmission jack carefully to remove fuel tank while holding it by hand.
CAUTION:
Fuel tank may be in an unstable condition because of the shape of fuel tank bottom. Never rely on
jack too much. Be sure to hold tank securely.
INSTALLATION
Note the following, and install in the reverse order of removal.
• Surely clamp fuel hoses and insert hose to the length below.
• Be sure hose clamp is not placed on swelled area of fuel tube.
• Tighten fuel filler hose clamp.
• To connect quick connector, refer to
FL-19, "Removal and Installation"
Inspection
INFOID:0000000010714508
INSPECTION AFTER INSTALLATION
Use the following procedure to check for fuel leakage.
1.
Turn ignition switch “ON” (with engine stopped), and check connections for leakage by applying fuel pres-
sure to fuel piping.
2.
Start engine and rev it up and check that there is no fuel leakage at the fuel system tube and hose con-
nections.
JPBIA6866ZZ
Fuel filler hose
: 35 mm (1.38 in)
The other hoses
: 25 mm (0.98 in)
Remaining length of screw thread
Specified torque
Fuel filler tube side
: 7 - 11 mm (0.28 - 0.43 in)
: 2.5 N·m (0.26 kg-m, 22 in-lb)
Fuel tank side
: 5 - 9 mm (0.20 - 0.35 in)
: 2.5 N·m (0.26 kg-m, 22 in-lb)
SERVICE DATA AND SPECIFICATIONS (SDS)
FL-29
< SERVICE DATA AND SPECIFICATIONS (SDS)
[MR20DD]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Fuel Tank
INFOID:0000000010683791
Standard and Limit
Fuel tank capacity
Approximate 65 (14-1/4 Imp gal)
Fuel recommendation
Refer to
FL-30
< PRECAUTION >
[K9K]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
General Precautions
INFOID:0000000010418992
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 workshop with a CO
2
fire extinguisher.
• Never smoke while servicing fuel system. Keep open flames and sparks away from the work area.
CAUTION:
• Use diesel fuel required by the regulations for cetane number. Refer to
• Before removing fuel line parts, perform the following procedures:
- Put drained fuel in an explosion-proof container and put the lid on securely. Keep the container in
safe area.
- Disconnect the battery cable from the negative terminal.
• Always replace O-ring and clamps with new ones.
• Never kink or twist tubes when they are being installed.
• Never tighten hose clamps excessively to avoid damaging hoses.
• After installing tubes, check that there is no fuel leakage at connections in the following steps.
- Start engine and rev it up and check for fuel leakage at connections.
• Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the
“MI” may come on.
• Drain water from fuel filter, when the fuel filter warning lamp
turns ON (with fuel filter warning). Refer to
.
PBIC2664E
PREPARATION
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< PREPARATION >
[K9K]
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PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000010430518
Tool number
Tool name
Description
KV101207S0
Lock ring wrench
Removing and Installing lock ring
FL-32
< PERIODIC MAINTENANCE >
[K9K]
FUEL SYSTEM
PERIODIC MAINTENANCE
FUEL SYSTEM
Inspection
INFOID:0000000010418994
Inspect fuel lines and tank for improper attachment, leaks, cracks,
damage, chafing and deterioration. If necessary, repair or replace.
SMA803A
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