NISSAN X-TRAIL 2003 Electronic Repair Manual

EXHAUST MANIFOLD AND TURBOCHARGER
EM-121
[YD22DDTi]
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Disassembly and AssemblyEBS00BOC
REMOVAL
1. After applying penetrative lubricant to the mounting nuts, check for the penetration of the lubricant, and
then loosen the nuts to remove.
CAUTION:
Do not disassemble or adjust the turbocharger body.
2. When a stud bolt is pulled out, tighten it to the following torque:
INSPECTION AFTER REMOVAL
Surface Distortion
Check the distortion on the mounting surface in the six directions
using a straightedge and a feeler gauge.
SBIA0159E
1. Exhaust manifold 2. Gasket 3. Oil inlet tube
4. Water tube 5. Turbocharger 6. Oil outlet tube
:24-27N·m(2.4-2.8kg-m,18-20ft-lb)
Limit : 0.3 mm (0.012 in)
JEM267G

EM-122
[YD22DDTi]
EXHAUST MANIFOLD AND TURBOCHARGER
Turbocharger
EBS00BPK
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:
ROTOR SHAFT CLEARANCE
lCheck that the rotor shaft rotates smoothly without any resis-
tance when it is rotated by your fingertips.
lCheck that the rotor shaft is not loose when it is moved vertically
or horizontally.
ROTOR SHAFT END PLAY
Place a dial gauge at the rotor shaft end in the axial direction to mea-
sure the end play.
SEM269G
Suction side : Between turbocharger and air cleaner
Exhaust side : Between turbocharger and catalyst
Standard : 0.068 - 0.096 mm (0.0027 - 0.0038 in)
SEM270G
Standard : 0.026 - 0.084 mm (0.0010 - 0.0033 in)
SEM271G

EXHAUST MANIFOLD AND TURBOCHARGER
EM-123
[YD22DDTi]
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TURBINE WHEEL
lCheck that there is no oil adhesion.
lCheck that there is no carbon accumulation.
lCheck that blades of the turbine wheel are not bent or broken.
lCheck that the turbine wheel does not interfere with the turbine
housing.
COMPRESSOR WHEEL
lCheck that there is no oil adhesion inside the air inlet.
lCheck that the compressor wheel does not interfere with the
compressor housing.
lCheck that the wheel is not bent or broken.
WASTEGATE VALVE ACTUATOR
lConnect the handy pump to the actuator, and check that the rod
strokes smoothly in compliance with the following pressure.
lPressure to be applied at actuator part to move rod end as fol-
lows:
TROUBLE DIAGNOSIS OF TURBOCHARGER
Preliminary check:
lCheck that the engine oil level is between MIN and MAX of the dipstick. (When the engine oil amount is
more than MAX, the oil flows into the inlet duct through the blow-by gas passage, and the turbocharger is
misjudged failure.)
lAsk the customer if he/she always runs the vehicle in idle engine speed to cool the oil down after driving.
lReplace the turbocharger assembly when any malfunction is found after unit inspections specified in the
table below.
lIf no malfunction is found after the unit inspections, judge that the turbocharger body has no failure. Check
the other parts again.
SEM272G
SEM273G
Standard (Pressure/rod stroke amount):
: 150.80 - 156.20 kPa (1,508 - 1,562 mbar, 1,131 - 1,172
mmHg, 44.0 - 46.2 inHg)/0.38 mm (0.0150 in)
: 176.50 - 185.90 kPa (1,765 - 1,859 mbar, 1,324 - 1,394
mmHg, 52.2 - 54.9 inHg)/4.0 mm (0.157 in)
SEM274G
Inspection item Inspection resultSymptom
(when each inspection item meets each inspection result)
Oil leakage Smoke NoiseInsufficient power/
acceleration failure

EM-124
[YD22DDTi]
EXHAUST MANIFOLD AND TURBOCHARGER
A: Large possibility
B: Medium possibility
C: Small possibilityTurbine wheelOil leaks C A C C
Carbon is accumulated C A B B
Friction with housing C B A B
Blades are bent or broken A A
Compressor wheelInside the air inlet is seriously con-
taminated by oil.BB
Friction with housing C B A B
Blades are bent or broken A A
After checking both turbine and
compressor, inspect rotor shaft
end play.There is resistance when the rotor
shaft is rotated by your fingertips.CC B
The rotor shaft sometimes does not
rotate by your fingertips.A
There is too much play in the bear-
ing.CCB C
Oil return portCarbon or sludge is accumulated in
the waste oil hole.CAC C

OIL PAN AND OIL STRAINER
EM-125
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OIL PAN AND OIL STRAINERP F P : 1111 0
Removal and InstallationEBS00BO1
REMOVAL
WA RN ING:
To avoid the danger of being scalded, never drain the engine oil when the engine is hot.
1. Remove engine under cover at both side.
2. Drain engine oil. Refer toLU-19, "
Changing Engine Oil".
3. Remove lower oil pan bolts, Loosen bolts in the reverse order of
that shown in the figure.
SBIA0160E
1. Rear plate cover 2. Oil pan upper 3. Oil strainer
4. Drain plug 5. Oil pan lower
SBIA0161E

EM-126
[YD22DDTi]
OIL PAN AND OIL STRAINER
4. Remove lower oil pan.
a. Insert Tool between upper oil pan and lower oil pan.
lBe careful not to damage aluminum mating surface.
lDo not insert screwdriver, or oil pan flange will be
deformed.
b. Slide Tool by tapping on the side of the Tool with a hammer.
c. Remove lower oil pan.
5. Remove drive belts.
6. Remove A/C compressor and bracket.
7. Remove front exhaust tube and its support.
8. Set a suitable transmission jack under transaxle and hoist
engine with engine slinger. Refer toEM-184, "
Removal and
Installation".
9. Remove center member.
10. Remove rear plate cover and four engine-to transaxle bolts.
11. Remove catalyst and rear diffuser. Refer toEM-118, "
Removal
and Installation".
12. Loosen bolts in reverse order of illustration to remove upper oil
pan.
SEM544G
SEM545G
JEM553G
SBIA0162E

OIL PAN AND OIL STRAINER
EM-127
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13. Remove upper oil pan.
lInsert Tool (Seal cutter) between upper oil pan and cylinder
block. Slide tool by tapping on the side of the tool with a ham-
mer. Remove oil pan.
lBe careful not to damage aluminum mating surface.
lDo not insert screwdriver, or oil pan flange will be
deformed.
14. Remove oil strainer.
INSPECTION AFTER REMOVAL
Clean oil strainer if any object attached.
INSTALLATION
1. Install oil strainer.
2. Install upper oil pan in the order below.
a. Use a scraper to remove old liquid gasket from mating surfaces.
lAlso remove old liquid gasket from mating surface of cylinder block, front cover and lower oil
pan.
lRemove old liquid gasket from the bolt hole and thread.
b. Apply a continuous bead of liquid gasket to mating surface of
aluminum oil pan.
lUse Genuine Liquid Gasket or equivalent.
c. Apply Genuine Liquid Gasket or equivalent, to areas shown in
the figure.
lAt the 8 bolt holes marked , liquid gasket should be
applied on the rims of the holes.
lBe sure liquid gasket is 3.5 to 4.5 mm (0.138 to 0.177 in)
or 4.5 to 5.5 mm (0.177 to 0.217 in) wide. (Be careful that
the diameter of the silicon bead is different around the
front.)
lAttaching should be done within 5 minutes after coating.
SEM365EA
JEM117G
SEM159F
JEM118G

EM-128
[YD22DDTi]
OIL PAN AND OIL STRAINER
d. Install upper oil pan.
lTighten bolts in numerical order to specified torque.
lBolt dimensions vary depending on the installation location.
Refer to the following and use appropriate bolts.
lThe shank length under the bolt neck above is the length of
the threaded part (pilot portion not included).
3. Tighten transaxle joint bolts.
4. Install rear plate cover.
5. Install lower oil pan.
a. Use a scraper to remove old liquid gasket from mating surfaces.
lAlso remove old liquid gasket from mating surface of
upper oil pan.
b. Apply a continuous bead of liquid gasket to mating surface of
lower oil pan.
lUse Genuine Liquid Gasket or equivalent.
lBe sure liquid gasket is 3.5 to 4.5 mm (0.138 to 0.177 in)
wide.
lAttaching should be done within 5 minutes after coating.
6. Install oil pan drain plug.
lRefer to illustration of components parts for installation direc-
tion of washer. M6 x 30 mm (1.18 in) : Bolt No. 15, 16
M8 x 25 mm (0.98 in) : Bolt No. 3, 4, 9, 10
M8x60mm(2.36in) :BoltNo.1,2,5,6,7,8,
11, 12, 13, 14
SBIA0162E
SBIA0163E
SEM159F
SBIA0164E

OIL PAN AND OIL STRAINER
EM-129
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7. Install in the reverse order of removal after this step.
lPour engine oil or start engine at least 30 minutes after
oil pan is installed.
INSPECTION AFTER INSTALLATION
Check for leakage of engine oil when engine is warmed.
SBIA0161E

EM-130
[YD22DDTi]
GLOW PLUG
GLOW PLUG
PFP:22401
Removal and InstallationEBS00BO2
REMOVAL
CAUTION:
Remove glow plug only if necessary. If carbon adheres, it may be stuck and broken.
1. Remove chage air cooler cover. Refer toEM-114, "
Removal and Installation".
2. Remove charg air cooler and bracket.
3. Disconnect harness connector from glow plate.
4. Remove glow nut to remove glow plate.
5. Remove glow plug.
CAUTION:
lWhen removing or installing, do not use such tools as an air impact wrench.
lHandle it carefully without giving any impact, even after removal. [As a guide, if it drops from
height of 10 cm (3.94 in) or higher, always replace it.]
INSTALLATION
1. Remove adhered carbon from glow plug installation hole with a reamer.
2. Install glow plug.
3. Install remaining parts in reverse order of removal.
SBIA0165E
1. Glow plate 2. Glow harness 3. Glow nut
4. Cap 5. Glow plug