Qashqai J11. Engine mechanical (HRA2DDT, K9K, MR20DD) — part 12
ENGINE STAND SETTING
EM-177
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[MR20DD]
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UNIT DISASSEMBLY AND ASSEMBLY
ENGINE STAND SETTING
Setting
INFOID:0000000010715492
NOTE:
Explained here is how to disassemble with engine stand supporting transaxle surface. When using different
type of engine stand, note with difference in steps and etc.
1.
Remove the engine and the transaxle assembly from the vehicle, and separate the transaxle from the
engine. Refer to
(CVT models).
2.
Install engine to engine stand with the following procedure:
a.
Remove flywheel or drive plate. Refer to
.
b.
Lift the engine with a hoist to install it onto widely use engine stand.
CAUTION:
• Use the engine stand that has a load capacity [approximately 135 kg (298 lb) or more] large
enough for supporting the engine weight.
• If the load capacity of stand is not adequate, remove the following parts beforehand to reduce the poten-
tial risk of overturning stand.
- Intake manifold: Refer to
.
- Exhaust manifold: Refer to
NOTE:
The figure shows an example of widely used engine stand
that can support mating surface of transaxle with drive plate
removed.
CAUTION:
Before removing the hanging chains, check the engine
stand is stable and there is no risk of overturning.
3.
Drain engine oil. Refer to
.
CAUTION:
Be sure to clean drain plug and install with new drain plug washer.
4.
Drain engine coolant by removing water drain plug
from
inside of the engine.
Use Genuine Liquid Gasket (Three Bond 1217H) or equiva-
lent.
PBIC3227J
: Engine front
Tightening torque
: Refer to
PBIC3228J
EM-178
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
FLYWHEEL
FLYWHEEL
Exploded View
INFOID:0000000010715493
Removal and Installation
INFOID:0000000010715494
REMOVAL
1.
Remove the engine and the transaxle assembly from the vehicle, and separate the transaxle from the
engine. Refer to
.
2.
Remove flywheel.
• Secure flywheel
with a stopper plate [SST: KV11105210]
(A), and remove mounting bolts.
CAUTION:
• Never disassemble them.
• Never place them with signal plate facing down.
• When handling signal plate, take care not to damage or scratch them.
• Handle signal plate in a manner that prevents them from becoming magnetized.
INSTALLATION
1.
Install flywheel.
Flywheel
: N·m (kg-m, ft-lb)
: Should be lubricated with oil.
JSBIA1437GB
JSBIA1438ZZ
FLYWHEEL
EM-179
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[MR20DD]
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• Secure flywheel
with a stopper plate [SST: KV11105210]
(A), and tighten mounting bolts.
• Using TORX socket (size E20), tighten mounting bolts.
CAUTION:
Never damage or scratch and contact surface for clutch disc of flywheel.
Inspection
INFOID:0000000010715495
FLYWHEEL DEFLECTION
• Measure the deflection of flywheel contact surface to torque with a
dial indicator (A).
• Measure the deflection at 210 mm (8.27 in) diameter.
• If measured value is out of the standard, replace flywheel.
• If a trace of burn or discoloration is found on the surface, repair it
with sandpaper.
MOVEMENT AMOUNT OF FLYWHEEL
CAUTION:
Never disassemble double mass flywheel.
Movement Amount of Thrust (Fore-and-Aft) Direction
• Measure the movement amount of thrust (fore-and-aft) direction when 100 N (10.2 kg, 22 lb) force is added
at the portion of 125 mm (4.92 in) radius from the center of flywheel.
• If measured value is out of the standard, replace flywheel.
Movement Amount in Radial (Rotation) Direction
Check the movement amount of radial (rotation) direction with the following procedure:
1.
Install clutch cover mounting bolt
to clutch cover mounting
hole, and place a torque wrench (A) on the extended line of the
flywheel
center
line.
• Tighten bolt at a force of 9.8 N·m (1.0 kg-m, 87 in-lb) to keep it
from loosening.
2.
Put a mating mark on circumferences of the two flywheel
masses without applying any load (Measurement standard
points).
3.
Apply a force of
[9.8 N·m (1.0 kg-m, 87 in-lb)] in each direc-
tion, and mark the movement amount on the mass on the tran-
saxle side.
4.
Measure the dimensions of movement amounts
and
on circumference of the flywheel on the tran-
saxle side.
JSBIA1438ZZ
Limit : 0.45 mm (0.0177 in) or less.
JSBIA1439ZZ
Standard
: 1.8 mm (0.071 in) or less
Limit
: 33.2 mm (1.307 in) or less.
JPBIA6915ZZ
EM-180
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
FLYWHEEL
• If measured value is out of the standard, replace flywheel.
DRIVE PLATE
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DRIVE PLATE
Exploded View
INFOID:0000000010715496
Removal and Installation
INFOID:0000000010715497
REMOVAL
1.
Remove the engine and the transaxle assembly from the vehicle, and separate the transaxle from the
engine. Refer to
.
2.
Remove drive plate.
• Secure drive plate
with a stopper plate [SST: KV11105210]
(A), and remove mounting bolts.
• Using TORX socket (size E20), loosen mounting bolts.
• loosen mounting bolts in diagonal order.
CAUTION:
• Never disassemble them.
Pilot converter
Drive plate
Reinforcement plate
Crankshaft position sensor 2
Chamfered
: Crankshaft side
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
: Should be lubricated with oil.
JPBIA6837GB
JPBIA4425ZZ
EM-182
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
DRIVE PLATE
3.
Remove pilot converter
, from the rear end of the crankshaft.
Use a pilot bush puller (commercial service tool)
, if neces-
sary.
INSTALLATION
1.
Install drive plate
, reinforcement plate
and pilot converter
as shown in figure.
• Using a drift of 33 mm (1.30 in) in diameter, press-fit pilot con-
verter into the end of crankshaft until it stops.
CAUTION:
Be careful not to damage or scratch and contact surface for clutch disc of flywheel.
2.
Install drive plate.
• Secure drive plate
with a stopper plate [SST: KV11105210]
(A), and remove mounting bolts.
• Using TORX socket (size E20), tighten mounting bolts.
• Install mounting bolts in diagonal order.
Inspection
INFOID:0000000010715498
DRIVE PLATE DEFLECTION
• Measure the deflection of drive plate contact surface to torque con-
verter with a dial indicator (A).
• Measure the deflection at the area limited between 11.0 mm (0.433
in) dia and 20.6 mm (0.811 in) dia around hole
.
• If measured value is out of the standard, replace drive plate.
PBIC3229J
: Crankshaft rear end
: Rounded
: Chamfered
PBIC3259J
JPBIA4425ZZ
Limit : 0.20 mm (0.0079 in) or less.
JSBIA1441ZZ
TIMING CHAIN
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TIMING CHAIN
Exploded View
INFOID:0000000010715499
Slack guide
Timing chain tensioner
Timing chain
Balancer unit timing chain
Crankshaft sprocket
Crankshaft key
Balancer unit sprocket
Balancer unit timing chain tensioner
O-ring
Timing chain tension guide
Camshaft sprocket (INT)
Camshaft sprocket (EXH)
O-ring
Front cover
Front oil seal
Crankshaft pulley
Crankshaft pulley bolt
O-ring
JPBIA6825GB
EM-184
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
TIMING CHAIN
Removal and Installation
INFOID:0000000010715500
REMOVAL
CAUTION:
The rotating direction in the text indicates all directions seen from the engine front.
1.
Drain engine oil. Refer to
.
CAUTION:
Perform this step when engine is cold.
2.
Remove rocker cover. Refer to
3.
Remove drive belts. Refer to
EM-139, "Removal and Installation"
4.
Set No. 1 cylinder at TDC on its compression stroke with the following procedure:
a.
Rotate crankshaft pulley
clockwise and align TDC mark (no
paint)
to timing indicator
on front cover.
b.
At the same time, check that the cam noses of the No. 1 cylinder
are located (
) as shown in the figure.
• If not, rotate crankshaft pulley one revolution (360 degrees)
and align as shown in the figure.
5.
Remove crankshaft pulley with the following procedure:
O-ring
VTC cover
O-ring
Exhaust valve timing control solenoid
valve
Intake valve timing control solenoid valve
Comply with the installation procedure
when tightening. Refer to
Comply with the installation procedure
when tightening. Refer to
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
: Should be lubricated with oil.
: Sealing point
,
,
: Indicates that the part is connected at points with same symbol in actual vehicle.
: White paint mark (Not use for service)
PBIC3960E
: Camshaft (INT)
: Camshaft (EXH)
: Engine front
JPBIA4347ZZ
TIMING CHAIN
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a.
Fix crankshaft pulley
with a pulley holder
(commercial ser-
vice tool), loosen crankshaft pulley bolt, and locate bolt seating
surface at 10 mm (0.39 in) from its original position.
CAUTION:
Never remove the crankshaft pulley bolt as they will be
used as a supporting point for the pulley puller [SST:
KV11103000].
b.
Attach a pulley puller [SST: KV11103000]
in the M6 thread
hole on crankshaft pulley
, and remove crankshaft pulley.
6.
Remove oil pan (lower). Refer to
.
NOTE:
If crankshaft sprocket and balancer unit component are not removed, this step is unnecessary.
7.
Remove intake valve timing control solenoid valve and exhaust valve timing control solenoid valve.
8.
Remove idler pulley assembly. Refer to
9.
Remove VTC cover.
• Loosen mounting bolts in the order from 8 to 1 as shown in the
figure.
NOTE:
Disregard No. 6 when loosening.
10. Remove front cover with the following procedure:
PBIC3961E
PBIC3962E
JPBIA6820ZZ
EM-186
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
TIMING CHAIN
a.
Loosen mounting bolts in the order from 21 to 1 as shown in the
figure.
b.
Cut liquid gasket by prying the position (
) shown in the figure,
and then remove the front cover.
CAUTION:
• Be careful not to damage the mating surface.
• A more adhesive liquid gasket is applied compared to pre-
vious types when shipped, so it should not be forced off
the position not specified.
11. Remove front oil seal from front cover.
CAUTION:
Be careful not to damage front cover.
• Lift up front oil seal using a screwdriver.
12. Remove timing chain tensioner with the following procedure:
a.
Push in timing chain tensioner plunger.
JPBIA6821ZZ
JPBIA4394ZZ
TIMING CHAIN
EM-187
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b.
Insert a stopper pin (A) into the body hole, and then fix it with the
plunger pushed in.
NOTE:
Use approximately 1.5 mm (0.059 in) diameter. hard metal pin
as a stopper pin.
c.
Remove timing chain tensioner.
13. Remove slack guide
, tension guide
and timing chain
.
CAUTION:
Never rotate each crankshaft and camshaft individually
while timing chain is removed. It causes interference
between valve and piston.
14. Remove crankshaft sprocket and balancer unit drive component with the following procedure:
: Timing chain tensioner
JPBIA4395ZZ
JPBIA5155ZZ
EM-188
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
TIMING CHAIN
a.
Press the balancer unit timing chain slack guide
toward bal-
ancer unit timing chain tensioner
.
b.
Insert a stopper pin (A) into tensioner body slit to secure the bal-
ancer unit timing chain slack guide.
NOTE:
Use a hard metal pin with the diameter of approximately 1.5 mm
(0.059 in) as a stopper pin.
c.
Remove balancer unit timing chain tensioner.
• When the holes on lever and tensioner body cannot be
aligned, align these holes by slightly moving the balancer unit
timing chain slack guide.
d.
Hold the WAF part of balancer shaft [WAF: 19 mm (0.75 in)]
,
and then loosen the balancer unit sprocket bolt.
CAUTION:
• Secure the balancer unit shaft with the WAF part.
• Never loosen the balancer unit sprocket bolt by tightening
the balancer unit drive chain.
e.
Remove crankshaft sprocket, balancer unit sprocket and bal-
ancer unit timing chain as a set.
INSTALLATION
CAUTION:
Do not reuse O-rings.
NOTE:
JPBIA5156ZZ
: Oil pan (upper)
: Engine front
PBIC3168J
TIMING CHAIN
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The figure shows the relationship between the matching mark on
each timing chain and that on the corresponding sprocket, with the
components installed.
*: There are two outer grooves in camshaft sprocket (INT). The wider one is a matching mark.
1.
Check that crankshaft key points straight up.
2.
If the tension guide (front cover side) is removed, install it to the front cover.
CAUTION:
Check the joint condition by sound or feeling.
3.
Install crankshaft sprocket
, balancer unit sprocket
and bal-
ancer unit timing chain
.
• Install it by aligning matching marks on each sprocket and bal-
ancer unit timing chain.
• If these matching marks are not aligned, rotate the balancer
shaft slightly to correct the position.
CAUTION:
Check matching mark position of each sprocket after installing the balancer unit timing chain.
: Timing chain
: Camshaft sprocket (EXH)
: Slack guide
: Timing chain tensioner
: Crankshaft sprocket
: Balancer unit timing chain
: Balancer unit sprocket
: Balancer unit timing chain tensioner
: Tension guide
: Camshaft sprocket (INT)
: Matching mark (dark blue link)
: Matching mark (stamping)
: Crankshaft key position (straight up)
: Matching mark (stamping)
: Matching mark (yellow link)
: Matching mark (white link)
: Matching mark (stamping)
: Matching mark (white link)
: Matching mark (dark blue link)
JSBIA5003ZZ
PBIC3171J
EM-190
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
TIMING CHAIN
4.
Hold the WAF part of balancer unit shaft [WAF: 19 mm (0.75 in)]
, and then tighten the balancer shaft sprocket bolt.
CAUTION:
• Secure the balancer unit shaft with the WAF part.
• Never loosen the balancer shaft sprocket bolt by tighten-
ing the balancer unit timing chain.
5.
Install balancer unit timing chain tensioner
.
• Fix the plunger at the most compressed position using a stop-
per pin (A), and then install it.
• Securely pull out (
) the stopper pin after installing the bal-
ancer unit timing chain tensioner.
• Check matching mark position of balancer unit timing chain
and each sprocket again.
: Oil pan (upper)
: Engine front
PBIC3168J
JPBIA5119ZZ
TIMING CHAIN
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6.
Align the matching marks of each sprocket with the matching
marks of timing chain.
*: There are 2 outer grooves in camshaft sprocket (INT). The wider one is a
matching mark.
• If these matching marks are not aligned, rotate the camshaft
slightly by holding the hexagonal portion to correct the posi-
tion.
CAUTION:
Check matching mark position of each sprocket and timing
chain again after installing the timing chain.
7.
Install the tension guide
and the slack guide
.
: Camshaft sprocket (EXH)
: Camshaft sprocket (INT)
: Timing chain
: Matching mark (dark blue link)
: Matching mark (stamping)
: Matching mark (yellow link)
: Matching mark (stamping)
JPBIA5153ZZ
: Timing chain
JPBIA5155ZZ
EM-192
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
TIMING CHAIN
8.
Install timing chain tensioner
.
• Fix the plunger at the most compressed position using a stop-
per pin (A), and then install it.
• Securely pull out the stopper pin after installing the timing
chain tensioner.
9.
Check matching mark position of timing chain and each sprocket again.
10. Install front oil seal. Refer to
EM-206, "FRONT OIL SEAL : Removal and Installation"
11. Install front cover with the following procedure:
a.
Install new O-ring to cylinder block.
CAUTION:
• Do not reuse O-ring.
• Never misalign O-ring.
b.
Apply a continuous bead of liquid gasket (A) with a tube presser
(commercial service tool) to front cover
as shown in the fig-
ure.
Use Genuine Liquid Gasket (Three Bond 1217H) or equiva-
lent.
c.
Check that matching marks of timing chain and each sprocket are still aligned. Then install front cover.
CAUTION:
• Check O-ring on cylinder block is correctly installed.
• Be careful not to damage front oil seal by interference with front end of crankshaft.
JPBIA4395ZZ
: 4.0 - 5.6 mm (0.157 - 0.220 in)
:
φ
3.4 - 4.4 mm (0.134 - 0.173 in)
: Engine outside
JPBIA6822ZZ
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