Qashqai J11. Engine mechanical (HRA2DDT, K9K, MR20DD) — part 10
SPARK PLUG
EM-145
< PERIODIC MAINTENANCE >
[MR20DD]
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3.
Remove spark plug with a spark plug wrench (commercial ser-
vice tool).
CAUTION:
Never drop or shock spark plug.
INSTALLATION
Install in the reverse order of removal.
Inspection
INFOID:0000000010715465
INSPECTION AFTER REMOVAL
Use the standard type spark plug for normal condition.
CAUTION:
• Never drop or shock spark plug.
• Never use a wire brush for cleaning.
• If plug tip is covered with carbon, spark plug cleaner may be
used.
• Checking and adjusting plug gap is not required between
replacement intervals.
• Measure spark plug gap. when it exceeds the limit, replace
spark plug even if it is with in the specified replacement mile-
age. Refer to
.
: 14 mm (0.55 in)
JPBIA0030ZZ
Spark plug (Standard type)
: Refer to
.
Cleaner air pressure
: Less than 588 kPa (5.88 bar, 6
kg/cm
2
, 85 psi)
Cleaning time
: Less than 20 seconds
SMA773C
JPBIA0031ZZ
EM-146
< REMOVAL AND INSTALLATION >
[MR20DD]
DRIVE BELT AUTO-TENSIONER
REMOVAL AND INSTALLATION
DRIVE BELT AUTO-TENSIONER
Exploded View
INFOID:0000000010715468
Removal and Installation
INFOID:0000000010715469
Removal
1.
Remove drive belt. Refer to
EM-139, "Removal and Installation"
• Keep each auto-tensioner pulley arm locked after drive belts are removed.
2.
Support the bottom surface of engine using a transmission jack, and then remove the rear torque rod and
the engine mounting insulator (RH). Refer to
CAUTION:
When using the jack, apply a piece of wood to the oil pan (lower) mounting bolt to protect the bot-
tom of engine from being scratched.
3.
Remove drive belt auto-tensioner mounting bolt
from service
hole
of right side member
.
NOTE:
Lift the front side of engine with a jack supporting the bottom of
engine and align drive belt auto-tensioner mounting bolt position
with the service hole.
4.
Remove drive belt auto-tensioner.
Installation
Install in the reverse order of removal.
CAUTION:
When installing drive belt auto-tensioner, be careful not to interfere with water pump pulley.
Front cover
Drive belt auto-tensioner
: N·m (kg-m, ft-lb)
JPBIA4304GB
: Drive belt auto-tensioner
: Vehicle front
PBIC3138J
AIR CLEANER AND AIR DUCT
EM-147
< REMOVAL AND INSTALLATION >
[MR20DD]
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AIR CLEANER AND AIR DUCT
Exploded View
INFOID:0000000010715470
Removal and Installation
INFOID:0000000010715471
REMOVAL
NOTE:
Mass air flow sensor is removable under the car-mounted condition.
1.
Release the air resonator pawls and remove to upper direction. Refer to
2.
Remove air duct inlet clips.
3.
Release the air duct inlet pawls and remove to upper direction. Refer to
4.
Disconnect mass air flow sensor harness connector.
5.
Loosen clamps of air duct assembly.
• Add mating marks if necessary for easier installation.
6.
Remove air cleaner assembly (cover and body).
7.
Remove mass air flow sensor from air cleaner body, if necessary.
CAUTION:
Mounting rubber
Air duct assembly
Air cleaner filter unit assembly
Air cleaner filter unit bracket
Air resonator bracket
Air Resonator
Air duct inlet
Clip
Air duct assembly bracket 1
Air duct assembly bracket 2
: Always replace after every disassembly.
: N·m (kg-m, in-lb)
E1BIA1175GB
EM-148
< REMOVAL AND INSTALLATION >
[MR20DD]
AIR CLEANER AND AIR DUCT
Handle the mass air flow sensor with following cares.
• Never shock the mass air flow sensor.
• Never disassemble the mass air flow sensor.
• Never touch the sensor of the mass air flow sensor.
8.
Disconnect PCV hose.
9.
Remove air duct assembly.
10. Remove bracket, if necessary.
INSTALLATION
Note the following, and install in the reverse order of removal.
Air cleaner body
CAUTION:
Check that mounting rubber is positioned in the mounting location and be careful not to allow it to be
dislocated when installing air cleaner body.
Air duct assembly
• To install air duct assembly
, align the matching marks
on both
ends with the others.
CAUTION:
Never allow foreign materials (i.e. lint) to adhere to the mount-
ing part of air duct assembly and each mating part.
• Install hose clamps and tighten to the torque specified below.
Inspection
INFOID:0000000010715472
INSPECTION AFTER REMOVAL
Inspect air duct assembly for crack or tear.
• If anything found, replace air duct assembly.
: Air cleaner body
: Electric throttle control actuator
: Vehicle front
: 4.5 Nm (0.46 kg-m, 40 in-lb)
JPBIA6831ZZ
INTAKE MANIFOLD
EM-149
< REMOVAL AND INSTALLATION >
[MR20DD]
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INTAKE MANIFOLD
Exploded View
INFOID:0000000010715473
Removal and Installation
INFOID:0000000010715474
REMOVAL
1.
Remove air cleaner assembly and air duct assembly. Refer to
.
2.
Pull out oil level gauge.
CAUTION:
Cover the oil level gauge guide openings to avoid entry of foreign materials.
Clamp
EVAP hose
Connector
EVAP hose
Clamp
EVAP canister purge volume
control solenoid valve
Bracket
PCV hose
Gasket
Intake manifold
Gasket
Electric throttle control actuator
To brake booster
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
JPBIA6811GB
EM-150
< REMOVAL AND INSTALLATION >
[MR20DD]
INTAKE MANIFOLD
3.
Disconnect water hoses
from electric throttle control actuator
as follows:
• Drain engine coolant from radiator or attach plug to prevent
engine coolant leakage when engine coolant is not drained.
Refer to
CAUTION:
Perform this step when the engine is cold.
4.
Remove electric throttle control actuator.
CAUTION:
• Handle carefully to avoid any shock to electric throttle control actuator.
• Never disassemble electric throttle control actuator.
5.
Disconnect vacuum hose from intake manifold.
6.
Disconnect PCV hose from intake manifold and rocker cover.
7.
Remove intake manifold with the following procedure:
CAUTION:
• Handle carefully to avoid any shock to intake manifold
runner control valve motor
.
• Never remove intake manifold runner control valve motor.
(Not designed for disassembly)
• Cover engine openings to avoid entry of foreign materi-
als.
a.
Loosen and remove intake manifold mounting bolts
and
.
b.
Remove harness clip from intake manifold side.
c.
Disconnect EVAP hose from intake manifold.
d.
Disconnect harness connector from EVAP canister purge vol-
ume control valve.
JPBIA6509ZZ
: Electric throttle control actuator side
JPBIA6787ZZ
: Intake manifold
: Engine front
JPBIA6812ZZ
INTAKE MANIFOLD
EM-151
< REMOVAL AND INSTALLATION >
[MR20DD]
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e.
Loosen mounting bolts in the order from 5 to 1 shown in the fig-
ure.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
f.
Lift the surge tank side
of intake manifold to move it in the
direction of engine front.
NOTE:
Keep off the brake reservoir tank and A/C low pressure pipe.
g.
Lower the surge tank side to pull out intake manifold runner con-
trol valve
from between harness and cylinder head.
8.
Remove brackets from intake manifold, if necessary. (For air duct assembly and/or engine cover)
9.
Remove EVAP canister purge volume control solenoid valve from intake manifold, if necessary.
INSTALLATION
Note the following, and install in the reverse order of removal.
Intake Manifold
1.
Check if gasket is not dropped from the installation groove of intake manifold.
2.
Install intake manifold with the following procedure:
a.
Temporary tighten in the order 4 to 5 as shown in the figure.
b.
Tighten in the order from 1 to 6 as shown in the figure.
JPBIA6813ZZ
JPBIA6833ZZ
JPBIA6834ZZ
JPBIA6813ZZ
EM-152
< REMOVAL AND INSTALLATION >
[MR20DD]
INTAKE MANIFOLD
c.
Tighten intake manifold mounting bolt
. Then tighten intake
manifold mounting bolt
.
Electric Throttle Control Actuator
• Tighten bolts of electric throttle control actuator equally and diagonally in several steps.
• Perform “Throttle Valve Closed Position Learning” after repair when removing harness connector of the elec-
tric throttle control actuator. Refer to
• Perform “Throttle Valve Closed Position Learning” and “Idle Air Volume Learning” after repair when replacing
electric throttle control actuator. Refer to
.
: Intake manifold
: Engine front
JPBIA6812ZZ
EXHAUST MANIFOLD
EM-153
< REMOVAL AND INSTALLATION >
[MR20DD]
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EXHAUST MANIFOLD
Exploded View
INFOID:0000000010715475
Removal and Installation
INFOID:0000000010715476
REMOVAL
1.
Remove intake manifold. Refer to
2.
Remove the air fuel ratio sensor 1.
• Using heated oxygen sensor wrench [SST: KV10117100], remove air fuel ratio sensor 1.
CAUTION:
Handle air fuel ratio sensor 1 carefully and avoid impacts.
3.
Remove exhaust manifold cover.
4.
Remove exhaust front tube. Refer to
.
Exhaust manifold cover
Air fuel ratio sensor 1
Exhaust manifold
Exhaust manifold stay
Gasket
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
JPBIA6814GB
EM-154
< REMOVAL AND INSTALLATION >
[MR20DD]
EXHAUST MANIFOLD
5.
Remove exhaust manifold stay
.
6.
Remove exhaust manifold.
• Loosen nuts in the order from 5 to 1 as shown in the figure.
NOTE:
Disregard No. 6 to 8 when loosening.
7.
Remove gasket.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
8.
Remove stud bolts from cylinder head.
INSTALLATION
CAUTION:
Never reuse stud bolts, mounting nuts, and gasket. Always replace them with new ones.
1.
Install stud bolts to cylinder head.
2.
Install gasket to cylinder head as shown in the figure.
3.
Install exhaust manifold with the following procedure:
: Exhaust manifold
: Upper mark
JPBIA6835ZZ
: Engine front
JPBIA6799ZZ
Torx
: Size E8
Torx
: Size E8
: Identification
: Engine front
JPBIA5141ZZ
EXHAUST MANIFOLD
EM-155
< REMOVAL AND INSTALLATION >
[MR20DD]
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a.
Tighten nuts in the order from 1 to 8 as shown in the figure.
NOTE:
No. 6 to 8 mean double of nuts No. 1 to 3.
b.
Retighten nuts in the order from 1 to 8 as shown in the figure.
4.
Install exhaust manifold stay
in the direction as shown in the
figure.
5.
Install remaining parts in the reverse order of removal.
• Air fuel ratio sensor 1
CAUTION:
Prevent rust preventives from adhering to the sensor body.
NOTE:
If a stud bolt on the exhaust front tube side comes off, install it with a torque socket (E7).
Inspection
INFOID:0000000010715477
INSPECTION AFTER REMOVAL
Surface Distortion
• Using feeler gauge (A) and straightedge (B), check the surface dis-
tortion of exhaust manifold mating surface in each exhaust port
and entire part.
• If it exceeds the limit, replace exhaust manifold.
INSPECTION AFTER INSTALLATION
Check the joint of parts with the engine in running state. Check that there is no leakage of exhaust gas and
abnormal sound.
: Engine front
JPBIA6799ZZ
: Exhaust manifold
: Upper mark
JPBIA6835ZZ
Limit
: Refer to
.
JPBIA6800ZZ
EM-156
< REMOVAL AND INSTALLATION >
[MR20DD]
OIL PAN (LOWER)
OIL PAN (LOWER)
Exploded View
INFOID:0000000010715478
Removal and Installation
INFOID:0000000010715479
REMOVAL
1.
Remove engine under cover.
2.
Drain engine oil. Refer to
.
3.
Remove oil pan (lower) with the following procedure:
Rear oil seal
O-ring
Oil pan (upper)
Drain plug
Drain plug washer
Oil pan (lower)
O-ring
Oil level gauge guide
Oil level gauge
To oil cooler
Oil pan (lower) side
: Oil pan side
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
: Should be lubricated with oil.
: Sealing point
JPBIA6893GB
OIL PAN (LOWER)
EM-157
< REMOVAL AND INSTALLATION >
[MR20DD]
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a.
Loosen mounting bolts in reverse order as shown in the figure.
b.
Insert seal cutter [SST: KV10111100] (A) between oil pan (upper)
and oil pan (lower).
CAUTION:
• Be careful not to damage the mating surface.
• Since factory default liquid gasket has better adhesion
than conventional one, never pick the area forcibly with a
screw driver.
INSTALLATION
CAUTION:
Do not reuse O-rings or washers.
Note the following, and install in the reverse order of removal.
1.
Install oil pan (lower) with the following procedure:
a.
Use a scraper
to remove old liquid gasket from mating sur-
faces.
• Also remove old liquid gasket from mating surface of oil pan
(upper).
• Remove old liquid gasket from the bolt holes and threads.
CAUTION:
Never scratch or damage the mating surface when cleaning
off old liquid gasket.
: Engine front
PBIC3146J
JPBIA0276ZZ
PBIC3953E
EM-158
< REMOVAL AND INSTALLATION >
[MR20DD]
OIL PAN (LOWER)
b.
Apply a continuous bead of liquid gasket
with a tube presser
(commercial service tool) as shown in the figure.
Use Genuine Liquid Gasket (Three Bond 1217H) or equiva-
lent.
CAUTION:
Attaching should be done within 5 minutes after liquid gas-
ket application.
c.
Tighten bolts in numerical order as shown in the figure.
2.
Install drain plug.
3.
Install in the reverse order of removal after this steps.
NOTE:
Wait at least 30 minutes after oil pan is installed before pouring engine oil.
Inspection
INFOID:0000000010715480
INSPECTION AFTER REMOVAL
Clean oil strainer portion [part of the oil pan (upper)] if any object attached.
INSPECTION AFTER INSTALLATION
1.
Check the engine oil level and adjust engine oil. Refer to
.
2.
Start engine, and check there is no leakage of engine oil.
3.
Stop engine and wait for 10 minutes.
4.
Check the engine oil level again. Refer to
: Oil pan (lower)
: Engine outside
PBIC3611J
: Engine front
PBIC3146J
HIGH PRESSURE FUEL PUMP AND FUEL HOSE
EM-159
< REMOVAL AND INSTALLATION >
[MR20DD]
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HIGH PRESSURE FUEL PUMP AND FUEL HOSE
Exploded View
INFOID:0000000010715481
CAUTION:
Never remove or disassemble parts unless instructed as shown in the figure.
Removal and Installation
INFOID:0000000010715482
REMOVAL
WARNING:
EM-124, "Precaution for Handling High Pressure Fuel System"
when working on the
high pressure fuel system.
• Put a “CAUTION: FLAMMABLE” sign in the workshop.
High pressure fuel pump insulator
High pressure fuel pump
O-ring
High pressure fuel pump lifter
Fuel rail connector
Fuel tube
Bracket
Fuel pump connector protector
Fuel feed hose
To centralized under-floor piping
: Engine front
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
: Always replace after every disassembly.
: Should be lubricated with oil.
: Indicates that the parts is connected at points with same symbols in actual vehicle.
JSBIA4597GB
EM-160
< REMOVAL AND INSTALLATION >
[MR20DD]
HIGH PRESSURE FUEL PUMP AND FUEL HOSE
• 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.
• To avoid the danger of being scalded, never drain engine coolant when engine is hot.
1.
Release fuel pressure. Refer to
.
2.
Remove fuel pump connector protector, and remove high pressure fuel pump insulator.
3.
Disconnect quick connector
with the following procedure.
a.
Disconnect fuel feed hose
from bracket hose clamp
.
b.
Disengage
and pull up
the pawl of the fuel feed hose con-
nector retainer
to disconnect the fuel feed hose from high
pressure fuel pump.
NOTE:
If the fuel feed hose is stuck, hold the fuel pipe by hand and dis-
connect it by pushing and pulling.
CAUTION:
• Keep parts away from heat source. Especially, be careful
when welding is performed around them.
• Never expose parts to battery electrolyte or other acids.
• Never bent or twist connection between quick connector
and fuel feed hose (with damper) during installation/
removal.
• Pull quick connector holding
.
• Never remove the retainer.
• Prepare a tray and waste beforehand as fuel leaks out.
• Never pull with lateral force applied. O-ring inside quick
connector may be damaged.
• To prevent damage to each joint and protect it from the
entry of foreign matter, cover the joint with plastic bag
or an equivalent.
4.
Remove intake manifold. Refer to
EM-149, "Removal and Installation"
5.
Remove fuel tube.
6.
Remove fuel rail connector.
JPBIA4376ZZ
Retainer color
: Red
JPBIA4377ZZ
JPBIA4378ZZ
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