Qashqai J11. Engine mechanical (HRA2DDT, K9K, MR20DD) — part 11
HIGH PRESSURE FUEL PUMP AND FUEL HOSE
EM-161
< REMOVAL AND INSTALLATION >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
7.
Remove high pressure fuel pump
and lifter.
CAUTION:
To prevent damage to high pressure fuel pump and cam-
shaft bracket, loosen bolt
alternately by one turn at a
time until the reaction force applied on the high pressure
fuel pump disappears.
INSTALLATION
CAUTION:
• Do not reuse O-rings.
• To prevent damage to parts due to generated abnormal stress and eccentric load, always observe
the installation procedure.
1.
Install high pressure fuel pump according to the following procedure.
a.
Check the orientation of pump cam from the mounting area
(view arrow) of high pressure fuel pump.
b.
Aim pump cam at the BDC area (arrow position).
NOTE:
For BDC area, anywhere within the area indicated by arrow can
be accepted.
c.
Install O-ring to high pressure fuel pump. When handing new O-ring, paying attention to the following cau-
tion items:
CAUTION:
• Do not reuse O-ring.
• Handle O-ring with bare hands. Never wear gloves.
• Lubricate O-ring with new engine oil.
• Never clean O-ring with solvent.
• Check that O-ring and its mating part are free of foreign material.
• Never damage O-ring with tools and fingernails during the installation. In addition, twisting or
stretching O-ring is not allowed. If O-ring is stretched during the installation to high pressure
fuel pump, never install high pressure fuel pump immediately.
d.
Install high pressure fuel pump lifter.
e.
Apply oil to the fitting area of high pressure fuel pump O-ring and camshaft bracket side to install high
pressure fuel pump.
f.
Install high pressure fuel pump. To prevent damage to high pressure fuel pump and camshaft bracket, the
following instructions must be observed.
JSBIA1673ZZ
JPBIA4379ZZ
: Camshaft (EXH)
JPBIA4380ZZ
EM-162
< REMOVAL AND INSTALLATION >
[MR20DD]
HIGH PRESSURE FUEL PUMP AND FUEL HOSE
CAUTION:
• Temporarily tighten bolt
by hand. Alternately tighten
bolt by one turn at a time until high pressure fuel pump
reaches camshaft bracket.
• After a pump flange sitting, tighten the bolts to the speci-
fied torque.
2.
Connect fuel feed hose with the following procedure, and them install the fuel feed hose.
a.
Check no foreign substances are deposited in and around matching pipe and quick connector, and no
damage on them.
b.
Quick connector shall be inserted gradually, aligning with the axis of the matching pipe.
c.
Insert the retainer until it clicks and check the retainer is locked.
After insertion, pull the connector and check that the connector
is locked.
CAUTION:
If retainer cannot be installed smoothly, quick connector
may be have not been installed correctly. Check connection
again.
d.
After attaching the quick connector and fix the hose to the clamp.
3.
Install new fuel rail connector
.
CAUTION:
• Never reuse fuel rail connector.
• Handle O-ring with bare hands. Never wear gloves.
• Lubricate O-ring with new engine oil.
• Never clean O-ring with solvent.
• Check that O-ring and its mating part are free of foreign
material.
• Never scratch O-ring with tools or fingernails when
installing fuel rail connector.
• Insert new fuel rail connector straight into fuel rail. Never decenter or twist the fuel rail connec-
tor during insertion.
4.
Install the fuel tube with the following procedure.
CAUTION:
• When removing fuel tube, always replace fuel rail connector together with fuel tube.
• Never reuse fuel tube.
• Never use fuel tube if its terminal tip is damaged.
• Observe the tightening order and the tightening torque.
: High pressure fuel pump
JSBIA1673ZZ
: Lock position
: Unlock position
JPBIA4381ZZ
: O-ring
JSBIA1674ZZ
HIGH PRESSURE FUEL PUMP AND FUEL HOSE
EM-163
< REMOVAL AND INSTALLATION >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
a.
Temporarily tighten flare nut
and
of fuel tube
until
seated.
CAUTION:
When temporarily tightening flare nut, place pipe in the cen-
ter of the nut inner diameter.
b.
Temporarily tighten bolt
until the seat of bracket is seated.
c.
Tighten flare nut
and
in alphabetical order.
CAUTION:
Always fit the tool completely with the nut.
d.
Tighten bolt
.
5.
Install in the reverse order of removal after this step.
Inspection
INFOID:0000000010715483
INSPECTION AFTER INSTALLATION
Check for Fuel Leakage
1.
Turn ignition switch “ON” (with the engine stopped). With fuel pressure applied to fuel piping, check that
there is no fuel leakage at connection points.
NOTE:
Use mirrors for checking at points out of clear sight.
2.
Start the engine. With engine speed increased, check again that there is no fuel leakage at connection
points.
CAUTION:
Never touch the engine immediately after it is stopped because the engine is extremely hot.
: High pressure fuel pump
: Fuel rail connector
JPBIA5808ZZ
EM-164
< REMOVAL AND INSTALLATION >
[MR20DD]
FUEL INJECTOR AND FUEL TUBE
FUEL INJECTOR AND FUEL TUBE
Exploded View
INFOID:0000000010715484
CAUTION:
• Never remove or disassemble parts unless instructed as shown in the figure.
Removal and Installation
INFOID:0000000010715485
WARNING:
• Be sure to read
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.
• 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.
Holder
Seal ring (white)
Backup ring
O-ring (blue)
Fuel injector
Stud bolt
Fuel rail
Fuel rail insulator
Fuel rail cover
Fuel pressure sensor
Gasket
To fuel rail connector and fuel tube.
Refer to
.
Comply with the assembly procedure
when tightening. Refer to
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
: Always replace after every disassembly.
: Should be lubricated with oil.
JPBIA5893GB
FUEL INJECTOR AND FUEL TUBE
EM-165
< REMOVAL AND INSTALLATION >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
• To avoid the danger of being scalded, never drain engine coolant when engine is hot.
REMOVAL
1.
Release the fuel pressure. Refer to
.
2.
Remove oil level gauge. Refer to
.
3.
Remove intake manifold. Refer to
4.
Remove alternator. Refer to
CHG-52, "MR20DD : Exploded View"
5.
Remove oil level gauge guide. Refer to
.
6.
Remove fuel rail cover, and then remove fuel rail insulator.
7.
Remove fuel tube and fuel rail connector. Refer to
.
8.
Disconnect fuel pressure sensor harness connector.
9.
Disconnect fuel injector harness connector.
10. Remove fuel pressure sensor, if necessary.
11. Remove fuel rail.
• Loosen mounting bolts in reverse order as shown in the figure.
CAUTION:
• When removing, be careful to avoid any interference with fuel
injector.
• Use a shop cloth to absorb any fuel leakage from fuel rail.
12. Remove fuel injector from cylinder head as per the following.
CAUTION:
• Be careful with remaining fuel that may go out from fuel rail.
• Be careful not to damage injector nozzles during removal.
• Never bump or drop fuel injector.
• Never disassemble fuel injector.
a.
Remove injector holder.
b.
Install an remover [SST: KV10119600 (—)] (A) to the injector
connector side so that cutout
of injector remover faces the
injector connector side.
• Hook pawl portion
of injector remover [SST: KV10119600
(—)] (A) to groove portion
of injector
: Engine front
JPBIA4388ZZ
JPBIA4382ZZ
JSBIA0343ZZ
EM-166
< REMOVAL AND INSTALLATION >
[MR20DD]
FUEL INJECTOR AND FUEL TUBE
c.
Press down body portion of injector remover [SST: KV10119600
(—)] (A) until it contacts cylinder head.
d.
Tighten injector remover [SST: KV10119600 (—)] clockwise and
remove injector from cylinder head.
e.
Cut seal ring
while pinching it. Be careful not to damage injec-
tor.
INSTALLATION
CAUTION:
Do not reuse O-rings.
1.
Install seal ring to fuel injector as per the following:
CAUTION:
• Handle seal ring with bare hands. Never wear gloves.
• Never apply engine oil to seal ring.
• Never clean seal ring with solvent.
JPBIA4383ZZ
JPBIA4384ZZ
JSBIA0346ZZ
FUEL INJECTOR AND FUEL TUBE
EM-167
< REMOVAL AND INSTALLATION >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
a.
Install an injector seal drift set [SST: KV101197S0 (—)] (A) to
fuel injector
.
b.
Set seal ring
to injector seal drift set [SST: KV101197S0 (—)]
.
c.
Straightly insert seal ring
, which is set in step 2, to fuel injec-
tor as shown in the figure and install.
CAUTION:
Be careful that seal ring does not exceed the groove portion
of fuel injector.
d.
Insert injector seal drift set [SST: KV101197S0 (—)] (A) to injec-
tor and rotate clockwise and counterclockwise by 90
°
while
pressing seal ring to fit it.
NOTE:
Compress seal ring, because this operation is for rectifying
stretch of seal ring caused by installation and for preventing
sticking when inserting injector into cylinder head.
2.
Install O-ring and backup ring to fuel injector. When handing new O-ring and backup ring, paying attention
to the following caution items:
CAUTION:
• Do not reuse O-ring.
• Handle O-ring with bare hands. Never wear gloves.
• Lubricate O-ring with new engine oil.
• Never clean O-ring with solvent.
• Check that O-ring and its mating part are free of foreign material.
• When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to
twist or stretch O-ring. If O-ring was stretched while it was being attached, never insert it quickly
into fuel tube.
JPBIA4386ZZ
JSBIA0348ZZ
JSBIA0350ZZ
JSBIA0351ZZ
EM-168
< REMOVAL AND INSTALLATION >
[MR20DD]
FUEL INJECTOR AND FUEL TUBE
• Insert new O-ring straight into fuel rail. Never decenter or twist it.
• Always install the back up ring
in the right direction as
instructed.
3.
Install fuel injector
to fuel rail
as per the following:
a.
Install fuel injector holder
to fuel injector.
CAUTION:
• Never reuse fuel injector holder. Replace it with a new
one.
• Be careful to keep fuel injector holder from interfering
with O-ring. If interference occurs, replace O-ring.
b.
Insert fuel injector into fuel rail with fuel injector holder attached.
• Insert it while matching it to the axial center.
• Insert so that protrusion
of fuel injector is aligned to cutout
.
c.
Check that installation is complete by checking that fuel injector
does not rotate or come off.
• Check that protrusions of fuel injectors and fuel rail are aligned
with cutouts of clips after installation.
4.
Install fuel rail and fuel injector assembly to cylinder head.
• Tighten mounting bolts and nuts in two steps in numerical
order as shown in the figure.
5.
Connect injector harness connector.
6.
Install fuel pressure sensor, if removed.
7.
Install fuel rail insulator.
CAUTION:
• As covering part of fuel tube connector at the back end of common rail can easily move because
of its shape, do not remove it before installation.
• Install the insulator so that it is placed under lower side of intake manifold flange.
8.
Install in the reverse order of removal after this step.
JPBIA3864ZZ
: O-ring (blue)
: Backup ring
JPBIA4387ZZ
: Engine front
1st step
: 10.0 N·m (1.0 kg-m, 89 in-lb)
2nd step
: 20.5 N·m (2.1 kg-m, 15 ft-lb)
JPBIA4388ZZ
FUEL INJECTOR AND FUEL TUBE
EM-169
< REMOVAL AND INSTALLATION >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
Inspection
INFOID:0000000010715486
INSPECTION AFTER INSTALLATION
Check on Fuel Leakage
1.
Turn ignition switch “ON” (with the engine stopped). With fuel pressure applied to fuel piping, check there
are no fuel leakage at connection points.
NOTE:
Use mirrors for checking at points out of clear sight.
2.
Start the engine. With engine speed increased, check again that there are no fuel leakage at connection
points.
CAUTION:
Never touch the engine immediately after stopped, as the engine becomes extremely hot.
EM-170
< REMOVAL AND INSTALLATION >
[MR20DD]
IGNITION COIL, SPARK PLUG AND ROCKER COVER
IGNITION COIL, SPARK PLUG AND ROCKER COVER
Exploded View
INFOID:0000000010715487
Removal and Installation
INFOID:0000000010715488
REMOVAL
1.
Remove intake manifold. Refer to
2.
Remove PCV valve and PCV hose, if necessary.
Ignition coil
Spark plug
Rocker cover
Rocker cover gasket
Oil filler cap
PCV valve
O-ring
Comply with the installation proce-
dure when tightening. Refer to
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
JPBIA6815GB
IGNITION COIL, SPARK PLUG AND ROCKER COVER
EM-171
< REMOVAL AND INSTALLATION >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
3.
Remove ignition coil.
CAUTION:
• Never drop or shock ignition coil.
• Never disassemble ignition coil.
4.
Remove rocker cover.
• Loosen bolts in the order from 7 to 1 shown in the figure.
5.
Remove rocker cover gasket from rocker cover.
6.
Use scraper to remove all traces of liquid gasket from camshaft bracket.
CAUTION:
Never scratch or damage the mating surface when cleaning off old liquid gasket.
INSTALLATION
CAUTION:
Do not reuse O-ring.
1.
Install the rocker cover gasket to rocker cover.
CAUTION:
Check the gasket is not dropped.
2.
Install rocker cover.
• Tighten bolts in two steps separately in the order from 1 to 7 as
shown in the figure.
3.
Install in the reverse order of removal, for the rest of parts.
JPBIA6816ZZ
1st step
: 1.96 N·m (0.20 kg-m, 17 in-lb)
2nd step
: 8.33 N·m (0.85 kg-m, 74 in-lb)
JPBIA6816ZZ
EM-172
< UNIT REMOVAL AND INSTALLATION >
[MR20DD]
ENGINE ASSEMBLY
UNIT REMOVAL AND INSTALLATION
ENGINE ASSEMBLY
Exploded View
INFOID:0000000010715489
MT Model
CVT Model
Engine mounting insulator (RH)
Rubber
Engine mounting insulator (LH)
Engine mounting frame support (LH)
Engine mounting bracket support
(LH)
Rear torque rod
Rear torque rod bracket
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
E1BIA1177GB
ENGINE ASSEMBLY
EM-173
< UNIT REMOVAL AND INSTALLATION >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
Removal and Installation
INFOID:0000000010715490
WARNING:
• Situate the vehicle on a flat and solid surface.
• Place chocks at front and back of rear wheels.
• Attach proper slingers and bolts described in PARTS CATALOG if engine slingers are not equipped.
CAUTION:
• Always be careful to work safely, avoid forceful or uninstructed operations.
• Never start working until exhaust system and coolant are cool enough.
• If items or work required are not covered by the engine section, refer to the applicable sections.
• Always use the support point specified for lifting.
• Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for unavoid-
able reasons, support at the rear axle jacking point with a transmission jack or similar tool before
starting work, in preparation for the backward shift of center of gravity.
Engine mounting insulator (RH)
Rear torque rod bracket
Rear torque rod
Engine mounting bracket (LH)
Stud bolt
Engine mounting bracket support
(LH)
Engine mounting insulator (LH)
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
E1BIA1178GB
EM-174
< UNIT REMOVAL AND INSTALLATION >
[MR20DD]
ENGINE ASSEMBLY
• For supporting points for lifting and jacking point at rear axle, refer to
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
Outline
Remove the engine and the transaxle assembly from the vehicle downward. Separate the engine and the tran-
saxle.
Preparation
1.
Release the fuel pressure. Refer to
.
2.
Drain engine coolant from radiator. Refer to
.
CAUTION:
• Perform this step when the engine is cold.
• Never spill engine coolant on drive belts.
3.
Remove the following parts.
• Engine under cover.
• Front road wheels and tires: Refer to
(without TPMS).
• Front fender protector (RH and LH): Refer to
• Drive belts: Refer to
.
• Engine cover.
• Battery: Refer to
PG-155, "Removal and Installation"
.
• Battery tray: Refer to
• TCM: Refer to
. (CVT models)
• Air duct, air duct assembly, and air cleaner assembly: Refer to
.
• Radiator hose (upper and lower): Refer to
• Exhaust front tube: Refer to
.
Engine Room LH
1.
Disconnect all connections of engine harness around the battery, and then temporarily secure the engine
harness into the engine side.
CAUTION:
Protect connectors using a resin bag against foreign materials during the operation.
2.
Disconnect fuel feed tube at engine side.
3.
Disconnect heater hoses
4.
Disconnect control cable from transaxle. Refer to
(CVT models) or
(MT models).
5.
Remove EVAP hoses. Refer to
.
Engine Room RH
1.
Disconnect vacuum hose from intake manifold. Refer to
.
2.
Disconnect A/C piping from A/C compressor. Refer to
(Type 3) or
(Type 4).
3.
Disconnect ground cable above the alternator.
Vehicle Underbody
1.
Disconnect steering lower joint at steering gear assembly side, and release steering shaft. Refer to
2.
Remove ground cable at transaxle side.
3.
Remove rear propeller shaft. Refer to
. (4WD models)
4.
Remove front wheel sensor (RH and LH) for ABS from steering knuckle. Refer to
5.
Remove lock plate of brake hose from strut. Refer to
BR-19, "FRONT : Exploded View"
(LHD models) or
BR-63, "FRONT : Exploded View"
(RHD models).
ENGINE ASSEMBLY
EM-175
< UNIT REMOVAL AND INSTALLATION >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
6.
Remove brake caliper assembly with piping connected from steering knuckle. Temporarily secure it on the
vehicle side with a rope to avoid load on it. Refer to the following table:
7.
Disconnect steering outer sockets from steering knuckle. Refer to
ST-13, "Disassembly and Assembly"
8.
Remove front drive shafts (RH and LH). Refer to
(2WD models),
(4WD models).
NOTE:
Cap or plug openings to prevent fluid from spilling.
9.
Remove rear torque rod.
10. Remove stabilizer connecting rod. Refer to
.
11. Remove front suspension member. Refer to
12. Preparation for the separation work of transaxle is as follows:
• Remove transaxle joint bolts which pierce at oil pan (upper) lower rear side. Refer to
.
Removal
1.
Use a manual lift table caddy (commercial service tool) or equiv-
alently rigid tool such as a transmission jack. Securely support
bottom of the engine and the transaxle assembly.
CAUTION:
Put a piece of wood or an equivalent as the supporting sur-
face, secure a completely stable condition.
2.
Remove engine mounting bolts on engine mounting insulator (RH).
• Loosen mounting bolts in the reverse order as shown in the
figure.
3.
Remove engine mounting insulator (LH) mounting nut
to the
transaxle.
4.
Carefully lower jack, or raise lift to remove the engine and the
transaxle assembly. When performing work, observe the follow-
ing caution.
CAUTION:
• Check that no part interferes with the vehicle side.
• Before and during this lifting, always check if any har-
nesses are left connected.
• During the removal, always be careful to prevent the vehi-
cle from falling off the lift due to changes in the center of
gravity.
• If necessary, support the vehicle by setting jack or suitable tool at the rear.
TYPE
Reference
LHD models
BR-37, "BRAKE CALIPER ASSEMBLY : Exploded View"
RHD models
BR-80, "BRAKE CALIPER ASSEMBLY : Exploded View"
JPBIA5146ZZ
: Vehicle front
JPBIA6802ZZ
JPBIA6803ZZ
EM-176
< UNIT REMOVAL AND INSTALLATION >
[MR20DD]
ENGINE ASSEMBLY
Separation
1.
Install engine slinger to front cover front left side
and cylinder
head rear right side
.
2.
Remove starter motor. Refer to
STR-25, "MR20DD : Exploded View"
3.
Lift with a hoist and separate the engine from the transaxle assembly. Refer to
(6MT models) or
(CVT models).
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
• Never allow engine oil to get on engine mounting insulator. Be careful not to damage engine mount-
ing insulator.
• Check that each mounting insulator is seated properly, and tighten mounting nuts and bolts.
Inspection
INFOID:0000000010715491
INSPECTION AFTER INSTALLATION
Inspection for Leakage
The following are procedures for checking fluids leakage, lubricates leakage, and exhaust gases leakage.
• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to
MA-59, "Fluids and Lubricants"
.
• Use procedure below to check for fuel leakage.
- Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-
age at connection points.
- Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.
• Warm up engine thoroughly to check there is no leakage of fuel, exhaust gases, or any oil/fluids including
engine oil and engine coolant.
• Bleed air from lines and hoses of applicable lines, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
*: Power steering fluid, brake fluid, etc.
Slinger bolts
: 32.9 N·m (3.4 kg-m, 24 ft-lb)
JPBIA6836ZZ
Items
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Transmission /
transaxle fluid
AT & CVT Models
Leakage
Level / Leakage
Leakage
MT Models
Level / Leakage
Leakage
Level / Leakage
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gases
—
Leakage
—
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст