Qashqai J11. Engine mechanical (HRA2DDT, K9K, MR20DD) — part 18
DRIVE BELT
EM-273
< PERIODIC MAINTENANCE >
[K9K]
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PERIODIC MAINTENANCE
DRIVE BELT
Exploded View
INFOID:0000000010287182
Removal and Installation
INFOID:0000000010287183
CAUTION:
• Replace any belt that has been removed with a new one.
• Auto-tensioner must be replaced with new ones when the belt is replaced.
• Never run the engine without the drive belts to avoid damaging the crankshaft pulley.
REMOVAL
1.
Remove RH front wheel.
2.
Remove front fender protector (RH) front side bolts and clips. And keep a service area. Refer to
3.
Remove drive belt.
• Turn clockwise adjusting bolt.
4.
If necessary, remove auto-tensioner.
INSTALLATION
1.
Install auto-tensioner mounting bolt.
2.
Install the drive belt.
CAUTION:
• Make sure belt is correctly engaged with the pulley groove.
• Check for oil and coolant on belt and each pulley groove.
E1BIA0021ZZ
1.
Crankshaft pulley
2.
A/C compressor or Idler pulley
3.
Drive belt
4.
Alternator
5.
Drive belt auto-tensioner
MBIB0353E
Auto-tensioner mounting bolt
: 40 N·m (4.1 kg-m, 30 ft-lb)
EM-274
< PERIODIC MAINTENANCE >
[K9K]
DRIVE BELT
3.
Make sure that tension of each belt is within the standard.
Inspection
INFOID:0000000010287184
INSPECTION
WARNING:
Be sure to perform when the engine is stopped.
1.
Inspect drive belt for cracks, fraying, wear and oil. Replace drive belt if necessary.
2.
Manually evaluate the drive belt tension (tension cannot be measured using frequency meter).
3.
Replace drive belt when tension is beyond normal operating limit.
CAUTION:
Auto-tensioner must be replaced with a new one when the belt is replaced.
Adjustment
INFOID:0000000010287186
Belt tensioning is not necessary, as it is automatically adjusted by auto-tensioner.
AIR CLEANER FILTER
EM-275
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[K9K]
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AIR CLEANER FILTER
Removal and Installation
INFOID:0000000010282054
REMOVAL
1.
Press the points (A) to separate air resonator from air duct and
air cleaner filter unit.
2.
Remove air resonator following the arrow.
3.
Unhook clips (1) on the air cleaner filter holder.
E1BIA1002ZZ
E1BIA1003ZZ
E1BIA1004ZZ
EM-276
< PERIODIC MAINTENANCE >
[K9K]
AIR CLEANER FILTER
4.
Separate air cleaner filter holder (1) from air cleaner filter unit
and remove air cleaner filter (2).
INSTALLATION
Install in the reverse order of removal.
E1BIA1005ZZ
DRIVE BELT AUTO-TENSIONER
EM-277
< REMOVAL AND INSTALLATION >
[K9K]
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REMOVAL AND INSTALLATION
DRIVE BELT AUTO-TENSIONER
Exploded View
INFOID:0000000010282057
WITH A/C
WITHOUT A/C
E1BIA0372GB
1.
Drive belt auto-tensioner
2.
Drive belt
3.
Multifunction bracket
E1BIA1196GB
1.
Drive belt auto-tensioner
2.
Multifunction bracket
3.
Drive beltt
4.
Idler pulley
5.
Idler pulley cover
6.
Cranshaft pulley
A.
EM-278
< REMOVAL AND INSTALLATION >
[K9K]
DRIVE BELT AUTO-TENSIONER
Removal and Installation
INFOID:0000000010282058
CAUTION:
• Replace any belt that has been removed with a new one.
• Auto-tensioner must be replaced with new ones when the belt is replaced.
• Do not run the engine without the drive belts to avoid damaging the crankshaft pulley.
REMOVAL
1.
Remove engine undercover.
2.
Remove RH front wheel.
3.
Remove right side splash cover.
4.
Remove drive belt. Refer to
EM-273, "Removal and Installation"
5.
Remove auto-tensioner.
6.
Remove idler pulley (Models without A/C only)
INSTALLATION
1.
Install auto-tensioner mounting bolt.
Align the notch and tighten mounting bolt.
2.
Install idler pulley (Models without A/C only)
3.
Install the drive belt. Refer to
EM-273, "Removal and Installation"
4.
Release drive belt auto-tensioner, and apply tension to drive belt.
5.
Turn crankshaft pulley clockwise several times to equalize tension between each pulley.
40.0 N·m (4.1 kg-m, 30 ft-lb)
MBIB0558E
40.0 N·m (4.1 kg-m, 30 ft-lb)
AIR CLEANER AND AIR DUCT
EM-279
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AIR CLEANER AND AIR DUCT
Exploded View
INFOID:0000000010478308
Removal and Installation
INFOID:0000000010282060
REMOVAL
1.
Remove air duct (air cleaner side).
2.
Remove air duct (inlet side).
3.
Disconnect mass air flow sensor.
4.
Disconnect air hose from air cleaner filter unit.
5.
Remove air cleaner filter unit.
6.
Remove air hose.
7.
Remove air filter element if necessary.
INSTALLATION
• Install in the reverse order of removal.
Inspection
INFOID:0000000010287198
INSPECTION AFTER REMOVAL
1.
Clip
2.
Air duct (inlet side)
3.
Air duct (air cleaner side)
4.
Holder
5.
Air filter element
6.
Air cleaner filter unit
7.
Mass air flow sensor
8.
Air hose
9.
Mounting rubber
10. Air cleaner filter unit bracket
E1BIA1158GB
EM-280
< REMOVAL AND INSTALLATION >
[K9K]
AIR CLEANER AND AIR DUCT
Inspect air ducts, air cleaner and hose for crack or tear.
• If anything found, replace air duct and resonator assembly.
CHARGE AIR COOLER
EM-281
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[K9K]
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CHARGE AIR COOLER
Exploded View
INFOID:0000000010287199
for symbols description.
Removal and Installation
INFOID:0000000010282062
REMOVAL
Air inlet hose and tube.
1.
Remove engine cover.
2.
Remove air inlet hose and tube. Refer to
Charge air cooler.
1.
Remove front bumper. Refer to
EXT-19, "Removal and Installation"
1.
Turbocharger
2.
Electric throttle control actuator
3.
Air inlet tube
4.
Cooling fan
5.
Charge air cooler
6.
High pressure pump
7.
Air inlet hose
E1BIA1152GB
EM-282
< REMOVAL AND INSTALLATION >
[K9K]
CHARGE AIR COOLER
2.
Put aside front bumper reinforcement (1) with harness assem-
bly.
3.
Remove:
• Radiator air guide RH (1).
• Radiator air guide LH (2).
• Radiator air guide lower (3).
• Radiator bracket mounting upper (4)
4.
Put aside radiator core support upper. Refer to
DLK-155, "HRA2DDT : Removal and Installation"
(Type 1),
DLK-336, "K9K : Removal and Installation"
(Type 2),
DLK-467, "K9K : Removal and Installation"
(Type 3),
DLK-605, "K9K : Removal and Installation"
(Type 4).
5.
Unhook and rotate charge air cooler (1).
6.
Remove charge air cooler.
CAUTION:
• Avoid interference between the charge air cooler and radiator.
• When removing charge air cooler, close opening on turbo
charger and intake manifold with shop cloth or other suitable
material.
INSTALLATION
1.
When replacing the electric throttle control actuator, this procedure must be performed. Refer to
"Special Repair Requirement List"
.
Install in the reverse order of removal paying attention to the following points:
• Apply a neutral detergent (fluid) to the joint between hoses and pipes (oil is not permissible).
• Pay attention to identification mark and direction.
• When installing air inlet hoses and tubes. Refer to
.
E1BIA1038ZZ
E1BIA1037ZZ
E1BIA1039ZZ
CHARGE AIR COOLER
EM-283
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[K9K]
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Inspection
INFOID:0000000010287200
INSPECTION AFTER REMOVAL
1.
Check that the charge air cooler is not full of oil. In that case, clean it with cleaning agent and then let it
dry.
2.
Check air passages of charge air cooler core and fins for clogging, leaks or deformation. Clean or replace
charge air cooler in necessary.
• Never deform core fins.
EM-284
< REMOVAL AND INSTALLATION >
[K9K]
EGR SYSTEM
EGR SYSTEM
Exploded View
INFOID:0000000010287201
for symbol marks in the figure.
Removal and Installation
INFOID:0000000010287202
REMOVAL
NOTE:
Exhaust Gas Recycling system is divided in two:
• High pressure Exhaust Gas Recycling.
• Low pressure Exhaust Gas Recycling.
1.
High pressure EGR valve
2.
Gasket
3.
High pressure EGR housing
4.
Electric throttle control actuator
5.
Low pressure EGR cooler
6.
Low pressure EGR valve
7.
Low pressure EGR intake tube
8.
Exhaust gas temperature sensor
9.
Clamp
10. High pressure EGR pipe
11.
EGR bracket
A.
To EGR tube
B.
From DPF
C.
From cylinder block
D.
To turbocharger air inlet pipe
E.
From charge air cooler
F.
From exhaust manifold
G.
To thermoplunger
E1BIA0900GB
EGR SYSTEM
EM-285
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[K9K]
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High pressure Exhaust Gas Recycling.
1.
Remove air cleaner case. Refer to
2.
Remove turbocharger air inlet pipe. Refer to
.
3.
Remove air inlet tube and air inlet hose. Refer to
4.
Remove electric throttle control actuator.
5.
Disconnect high pressure EGR solenoid valve connector. Refer to
.
6.
Remove high pressure EGR volume control valve mounting bolts .
7.
Remove high pressure EGR volume control valve. Refer to
.
CAUTION:
• Handle carefully to avoid any shock to EGR volume control valve.
• Never disassemble EGR volume control valve.
• Cover engine openings to avoid entry of foreign materials.
CAUTION:
High pressure EGR volume control valve housing, high pressure EGR pipe and EGR tube are con-
nected.
To remove those parts, it is necessary to follow the procedure below.
• Drain engine coolant. Refer to
CAUTION:
Perform this step when the engine is cold.
• Remove turbocharger. Refer to
.
• Remove high pressure EGR pipe. Refer to
• Remove EGR tube. Refer to
.
• Remove high pressure EGR volume control valve housing. Refer to
.
CAUTION:
• Handle carefully to avoid any shock to EGR volume control valve.
• Never disassemble EGR volume control valve.
• Cover engine openings to avoid entry of foreign materials.
Low pressure Exhaust Gas Recycling.
1.
Drain engine coolant. Refer to
CAUTION:
Perform this step when the engine is cold.
2.
Remove Diesel Particle Filter. Refer to
.
3.
Remove turbocharger. Refer to
4.
Remove exhaust gas temperature sensor on the low pressure EGR intake tube. Refer to
5.
Remove low pressure EGR intake tube. Refer to
.
6.
Remove low pressure EGR volume control valve mounting bolts. Refer to
.
7.
Remove low pressure EGR volume control valve. Refer to
CAUTION:
• Handle carefully to avoid any shock to EGR volume control valve.
• Never disassemble EGR volume control valve.
• Cover engine openings to avoid entry of foreign materials.
8.
Remove low pressure EGR cooler mounting bolts. Refer to
9.
Remove low pressure EGR cooler. Refer to
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Clean each joint surface before installation.
EM-286
< REMOVAL AND INSTALLATION >
[K9K]
EGR SYSTEM
1.
Perform "EGR volume control valve position learning". Refer to
removing or replacing EGR volume control valve.
2.
Perform "Low pressure EGR volume control valve position learning". Refer to
. when removing or replacing low pressure EGR volume control.
3.
When replacing the EGR volume control valve, this procedure must be performed. Refer to
"Special Repair Requirement List"
.
4.
When replacing the low pressure EGR volume control valve, this procedure must be performed. Refer to
TURBOCHARGER
EM-287
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[K9K]
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TURBOCHARGER
Exploded View
INFOID:0000000010287203
Refert to
for symbol marks in the figure.
Removal and Installation
INFOID:0000000010282069
REMOVAL
1.
Remove cowl top. Refer to
2.
Remove air cleaner case. Refer to
EM-275, "Removal and Installation"
.
3.
Drain engine coolant. Refer to
.
4.
Remove air inlet tube and air inlet hose. Refer to
5.
Remove diesel particulate filter assembly. Refer to
6.
Remove EGR volume control valve housing. Refer to
7.
Remove EGR cooler.
8.
Remove oil tubes.
9.
Remove turbocharger assembly (1) as follows.
1.
Oil supply tube
2.
Heat insulator
3.
Bracket
4.
Gasket
5.
Oil return pipe
6.
Oil return pipe
7.
O-ring
8.
Exhaust manifold
9.
Gasket
10. Bracket
11.
Spacer
12. Rubber
13. Gasket
14. Turbocharger air inlet pipe
15. Turbocharger
A.
To DPF
B.
To charge air cooler
C.
From low pressure EGR
D.
From turbocharger air inlet pipe
E.
To blow by hose
E1BIA1187GB
EM-288
< REMOVAL AND INSTALLATION >
[K9K]
TURBOCHARGER
NOTE:
After applying penetrative lubrificant to the mounting nuts, check for the penetration of the lubrificant, and
then loosen the nuts to remove.
10. Remove turbocharger oil outlet hose.
CAUTION:
Be careful not to deform each turbocharger piping when pulling out the assembly.
11. Remove turbocharger outlet duct.
INSTALLATION
Install in the reverse order of removal.
NOTE:
Apply LOCTITE FRENETANCHE or equivalent to the threads of the turbocharger oil inlet pipe union to the cyl-
inder head.
Inspection
INFOID:0000000010287204
INSPECTION AFTER REMOVAL
Turbocharger
CAUTION:
When the compressor wheel, turbine wheel or rotor shaft is damaged, remove all the fragments and
foreign matter left in the following passages in order to prevent a secondary failure:
INSPECTION AFTER INSTALLATION
Start engine and raise engine speed to check no exhaust emission leaks.
Suction side
: Between turbocharger and air cleaner
Exhaust side
: Between turbocharger and outlet duct
E1BIA0906ZZ
A
: Check for gas leaks
B
: Check fo oil leaks
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