NISSAN X-TRAIL 2003 Electronic Repair Manual
Manufacturer: NISSAN, Model Year: 2003, Model line: X-TRAIL, Model: NISSAN X-TRAIL 2003Pages: 3066, PDF Size: 51.47 MB
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![NISSAN X-TRAIL 2003 Electronic Repair Manual TIMING CHAIN
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9. Install Intake valve timing control cover with the following procedure.
a. Install Intake valve timing control solenoid valves to Intake valve NISSAN X-TRAIL 2003 Electronic Repair Manual TIMING CHAIN
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9. Install Intake valve timing control cover with the following procedure.
a. Install Intake valve timing control solenoid valves to Intake valve](/img/5/57402/w960_57402-2020.png)
TIMING CHAIN
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9. Install Intake valve timing control cover with the following procedure.
a. Install Intake valve timing control solenoid valves to Intake valve timing control cover.
b. Install Oil rings to the intake camshaft sprocket insertion points on Intake valve timing control backside
cover.
c. Install O-ring to front cover.
d. Apply liquid gasket to the positions in the figure.
e. Tighten mounting bolts in the numerical order shown in the fig-
ure.
10. Insert crankshaft pulley by aligning with crankshaft key.
lTap its center with a plastic hammer to insert.
lDo not tap belt hook.
11. Tighten crankshaft pulley mounting bolts.
lSecure crankshaft pulley with a pulley holder, and tighten the bolts.
lPerform angle tightening with the following procedure.
a. Apply new engine oil to threads and seat surfaces of mounting bolts.
b. Tighten to 37.3 to 47.1 N·m (3.8 to 4.8 kg-m, 28 to 34 ft-lb).
c. put a paint mark on front cover, mating with any one of six easy
to recognize stamp marks on bolt flange.
d. Turn another 60°to 66°[Target: 60°].
lCheck vertical mounting angle with movement of one stamp
mark.
12. Install remaining parts in reverse order of removal.
KBIA0084E
KBIA0085E
PBIC0258E
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![NISSAN X-TRAIL 2003 Electronic Repair Manual EM-52
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CYLINDER HEAD
CYLINDER HEAD
PFP:11041
On-Vehicle ServiceEBS009R3
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer toEC-34, "
FU NISSAN X-TRAIL 2003 Electronic Repair Manual EM-52
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CYLINDER HEAD
CYLINDER HEAD
PFP:11041
On-Vehicle ServiceEBS009R3
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer toEC-34, "
FU](/img/5/57402/w960_57402-2021.png)
EM-52
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CYLINDER HEAD
CYLINDER HEAD
PFP:11041
On-Vehicle ServiceEBS009R3
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer toEC-34, "
FUEL PRESSURE RELEASE"(WITH EURO-OBD),EC-399,
"FUEL PRESSURE RELEASE"(WITHOUT EURO-OBD).
3. Remove ignition coil and spark plug from each cylinder.
Refer to IGNITION COILEM-27, "
Removal and Installation"and SPARK PLUGEM-28, "Removal and
Installation".
4. Connect engine tachometer (not required in use of CONSULT-ll).
5. Disconnect fuel injector sub-harness to avoid fuel injection dur-
ing measurement.
6. Install compression tester with adapter onto spark plug hole.
lUse compression gauge whose picking up end inserted to spark
plug hole is smaller than 20 mm (0.79 in) in diameter. Otherwise,
it may be caught by cylinder head during removal.
7. With accelerator pedal fully depressed, turn ignition switch to
“START” for cranking. When the gauge pointer stabilizes, read
the compression pressure and engine rpm. Perform these steps
to check each cylinder.
Unit: mPa (bar, kg/cm2,psi)/rpm
CAUTION:
Always use a fully changed battery to obtain specified engine speed.
lIf the engine speed is out of specified range, check battery liquid for proper gravity. Check engine speed
again with normal battery gravity.
lIf compression pressure is below minimum value, check valve clearances and parts associated with com-
bustion chamber (Valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head gas-
ket). After the checking, measure compression pressure again.
KBIA0269E
KBIA0130E
Standard MinimumDeference limit
between cylinders
1,19 (11.9,12.1, 173) /
2500,99 (9.9, 10.1, 144) /
2500.1 (1.0, 1.0, 14 ) / 250
SEM387C
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![NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER HEAD
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lIf some cylinders have low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to re-check it for com NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER HEAD
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lIf some cylinders have low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to re-check it for com](/img/5/57402/w960_57402-2022.png)
CYLINDER HEAD
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lIf some cylinders have low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, the piston rings may be worn out or damaged. Check
the piston rings and replace if necessary.
–If the compression pressure remains at low level despite the addition of engine oil, the valves may be mal-
functioning. Check the valves for damage. Replace the valve or valve seat accordingly.
lIf two adjacent cylinders have respectively low compression pressure and their compression remains low
even after the addition of engine oil, the gaskets are leaking. In such a case, replace the cylinder head
gaskets.
8. Install spark plug, ignition coil and harness connectors.
Removal and InstallationEBS009R4
REMOVAL
1. Release fuel pressure. Refer toEC-34, "FUEL PRESSURE RELEASE"(WITH EURO-OBD),EC-399,
"FUEL PRESSURE RELEASE"(WITHOUT EURO-OBD).
2. Drain engine coolant and engine oil.
3. Remove the following components and related parts.
lEngine hood and engine under cover.
lAir cleaner case and air duct assembly; Refer toEM-15, "Removal and Installation".
lIgnition coils; Refer toEM-27, "Removal and Installation".
lRocker cover; Refer toEM-31, "Removal and Installation".
lEngine Coolant reservoir tank
lAuxiliary drive belt; Refer toEM-14, "Removal and Installation of Auxiliary Drive Belt Auto- tensioner".
lAlternator
lAuxiliary drive belt auto -tensioner; Refer toEM-14, "Removal and Installation of Auxiliary Drive Belt Auto-
tensioner".
lExhaust front tube; Refer toEX-2, "EXHAUST SYSTEM".
lExhaust manifold; Refer toEM-22, "Removal and Installation".
lIntake manifold collector, intake manifold and fuel tube assembly; Refer toEM-17, "Removal and Installa-
tion".
lWater control valve and housing; Refer toCO-21, "THERMOSTAT AND WATER CONTROL VALVE".
4. Remove front cover and timing chain. Refer toEM-43, "
Removal and Installation".
KBIA0250E
1 Cylinder head assembly 2 Cylinder head gasket 3 Cylinder head bolt
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![NISSAN X-TRAIL 2003 Electronic Repair Manual EM-54
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CYLINDER HEAD
5. Remove camshaft. Refer toEM-33, "Removal and Installation".
6. Securely support bottom of cylinder block with a jack or equivalent tool, and remove the hoist that was
s NISSAN X-TRAIL 2003 Electronic Repair Manual EM-54
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CYLINDER HEAD
5. Remove camshaft. Refer toEM-33, "Removal and Installation".
6. Securely support bottom of cylinder block with a jack or equivalent tool, and remove the hoist that was
s](/img/5/57402/w960_57402-2023.png)
EM-54
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CYLINDER HEAD
5. Remove camshaft. Refer toEM-33, "Removal and Installation".
6. Securely support bottom of cylinder block with a jack or equivalent tool, and remove the hoist that was
supporting it.
7. Remove cylinder head loosening bolts in reverse order shown in
the figure.
INSPECTION AFTER REMOVAL
OuterDiameterofCylinderHeadBolts
lCylinder head bolts are tightened by plastic zone tightening
method. Whenever the size difference between d1 and d2
exceeds the limit, replace them with new one.
lIf reduction of outer diameter appears in a position other than
d2, use it as d2 point.
INSTALLATION
1. Install cylinder head gasket.
2. Follow the steps below to tighten fixing bolts in the order shown
in figure to install cylinder head.
CAUTION:
lIf cylinder head bolts are re-used, check their outer diam-
eters before installation. Refer toEM-54, "
Outer Diameter
of Cylinder Head Bolts".
lIn step “c”, loosen bolts in the reverse order of that indi-
catedinfigure.
a. Apply new engine oil to threads and seating surface of mounting
bolts.
b. Tighten all bolts to 98.1 N·m (10 kg-m, 72 ft-lb).
c. Completely loosen to 0 N·m (0 kg-m, 0 ft-lb).
d. Tighten all bolts to 34.3 to 44.1 N·m (3.5 to 4.4 kg-m, 26 to 32 ft-lb).
e. Turn all bolts 75°to 80°(target: 75°) degrees clockwise.
f. Turn all bolts 75°to 80°(target: 75°) degrees clockwise again.
CAUTION:
Check and confirm the tightening angle by using angle
wrench or protractor. Avoid judgment by visual inspection
without the tool.
KBIA0058E
Limit (d1 - d2) : More than 0.23 mm (0.0091 in)
KBIA0189E
KBIA0058E
KBIA0059E
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![NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER HEAD
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3. Install followings in reverse order of removal.
Disassembly and AssemblyEBS009R5
CAUTION:
lWhen installing camshafts, chain tensioners, oil se NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER HEAD
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3. Install followings in reverse order of removal.
Disassembly and AssemblyEBS009R5
CAUTION:
lWhen installing camshafts, chain tensioners, oil se](/img/5/57402/w960_57402-2024.png)
CYLINDER HEAD
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3. Install followings in reverse order of removal.
Disassembly and AssemblyEBS009R5
CAUTION:
lWhen installing camshafts, chain tensioners, oil seals or other sliding parts, lubricate contacting
surface with new engine oil.
lApply new engine oil to threads and seat surface when installing cylinder head, camshaft
sprocket, crankshaft pulley and camshaft bracket.
lAttach tags to valve lifters so as not to mix them up.
DISASSEMBLY
1. Remove valve lifter.
lConfirm installation point.
2. Remove valve collet.
lCompress valve spring with valve spring compressor.
Remove valve collet with magnet driver.
3. Remove valve spring retainer and valve spring.
CAUTION:
Do not remove valve spring seat from valve spring.
4. Push valve stem to combustion chamber side, and remove
valve.
lInspect valve guide clearance before removal. Refer toEM-
57, "VALVE GUIDE CLEARANCE".
lConfirm installation point.
KBIA0251E
1 Valve collet 2 Valve spring retainer 3 Valve spring (with valve spring seat)
4 Valve oil seal 5 Valve guide 6 Cylinder head
7 Valve seat (INT) 8 Valve (INT) 9 Valve (EXH)
10 Valve seat (EXH) 11 Spark plug
PBIC0277E
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![NISSAN X-TRAIL 2003 Electronic Repair Manual EM-56
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CYLINDER HEAD
5. Remove valve oil seal with valve oil seal puller.
6. When valve seat must be replaced, refer toEM-58, "
VA LV E
SEAT REPLACEMENT"to removal.
7. When valve guide must be NISSAN X-TRAIL 2003 Electronic Repair Manual EM-56
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CYLINDER HEAD
5. Remove valve oil seal with valve oil seal puller.
6. When valve seat must be replaced, refer toEM-58, "
VA LV E
SEAT REPLACEMENT"to removal.
7. When valve guide must be](/img/5/57402/w960_57402-2025.png)
EM-56
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CYLINDER HEAD
5. Remove valve oil seal with valve oil seal puller.
6. When valve seat must be replaced, refer toEM-58, "
VA LV E
SEAT REPLACEMENT"to removal.
7. When valve guide must be replaced, refer toEM-57, "
VA LV E
GUIDE REPLACEMENT"to removal.
8. Remove spark plug with spark plug wrench.
ASSEMBLY
1. Install valve guide. Refer toEM-57, "VALVE GUIDE REPLACEMENT".
2. Install valve seat. Refer toEM-58, "
VALVE SEAT REPLACEMENT".
3. Install valve oil seal.
lInstall with valve oil seal drift to match dimension in illustra-
tion.
4. Install valve.
lInstall larger diameter to intake side.
5. Install valve spring.
lInstall smaller pitch (valve spring seat side) to cylinder head
side.
lConfirm identification color of valve spring.
Intake: Blue
Exhaust : Yellow
6. Install valve spring retainer.
7. Install valve collet.
lCompress valve spring with valve spring compressor. Install
valve collet with magnet hand.
lTap stem edge lightly with plastic hammer after installation to
check its installed condition.
8. Install valve lifter.
9. Install spark plug with spark plug wrench.
Inspection After DisassemblyEBS009R6
CYLINDER HEAD DISTORTION
1. Wipe off oil and remove water scale (like deposit), gasket,
sealer, carbon, etc with scraper.
CAUTION:
Use utmost care not to allow gasket debris to enter pas-
sages for oil or water.
2. At each of several locations on bottom surface of cylinder head,
measuredistortioninsixdirections.
SEM093F
KBIA0135E
PBIC0525E
Standard : 0.1mm (0.004 in)
PBIC0075E
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VA LV E D I M EN S IO N S
Check dimensions of each valve. For dimensions, refer to SDSEM-
91, "VA LV E"
VALVE GUIDE CLEARANCE
Perform this inspec NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER HEAD
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VA LV E D I M EN S IO N S
Check dimensions of each valve. For dimensions, refer to SDSEM-
91, "VA LV E"
VALVE GUIDE CLEARANCE
Perform this inspec](/img/5/57402/w960_57402-2026.png)
CYLINDER HEAD
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VA LV E D I M EN S IO N S
Check dimensions of each valve. For dimensions, refer to SDSEM-
91, "VA LV E"
VALVE GUIDE CLEARANCE
Perform this inspection before removing valve guide.
1. Make sure that the valve stem diameter is within the specification.
2. Push the valve out by approx. 15 mm (0.59 in) toward the combustion chamber side to measure the
valve's run-out volume (in the direction of dial gauge) with dial gauge.
3. The half of the run-out volume accounts for the valve guide clearance.
VALVE GUIDE REPLACEMENT
When valve guide is removed, replace with oversized (0.2 mm, 0.008 in) valve guide.
1. To remove valve guide, heat cylinder head to 110 to 130°C(230
to 266°F) by soaking in heated oil.
2. Driveoutvalveguidewithapress[undera20kN(2ton,2.2US
ton, 2.0 lmp ton) pressure] or hammer and suitable tool.
SEM188A
Standard
Intake : 0.020 - 0.053 mm (0.0008 - 0.0021 in)
Exhaust : 0.030 - 0.063 mm (0.0012 - 0.0025 in)
PBIC0077E
SEM008A
SEM931C
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![NISSAN X-TRAIL 2003 Electronic Repair Manual EM-58
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CYLINDER HEAD
3. Ream cylinder head valve guide hole.
4. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in
heated oil.
5. Press valve guide from camshaft side to dimensi NISSAN X-TRAIL 2003 Electronic Repair Manual EM-58
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CYLINDER HEAD
3. Ream cylinder head valve guide hole.
4. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in
heated oil.
5. Press valve guide from camshaft side to dimensi](/img/5/57402/w960_57402-2027.png)
EM-58
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CYLINDER HEAD
3. Ream cylinder head valve guide hole.
4. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in
heated oil.
5. Press valve guide from camshaft side to dimensions as in illus-
tration.
6. Using valve guide reamer, apply reamer finish to valve guide.
VA LV E S E AT C O N TA C T
lAfter confirming that the dimensions of valve guides and valves
are within specifications, perform this procedure.
lApply prussian blue (or white lead) onto contacting surface of
valve seat to check the condition of the valve contact on the sur-
face.
lCheck if the contact area band is continuous all around the cir-
cumference.
lIf not, grind to adjust valve fitting and check again. If the contact-
ing surface still has N.G conditions even after the re-check,
replace valve seat.
VALVE SEAT REPLACEMENT
When valve seat is removed, replace with oversized (0.5 mm, 0.020 in) valve seat.
1. Bore out old seat until it collapses. Boring should not continue beyond the bottom face of the seat recess
in cylinder head. Set the machine depth stop to ensure this.Valve guide hole diameter (for service parts)
Intake and exhaust
: 10.175 - 10.196 mm (0.4006 - 0.4014 in)
SEM932C
PBIC0078E
Standard
Intake and exhaust : 6.000- 6.018 mm (0.2362- 0.2369
in)
SEM932C
EMA0487D
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2. Ream cylinder head recess diameter for service valve seat.
lBe sure to ream in circles concentric to the valve guide center.
lThis will enable NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER HEAD
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2. Ream cylinder head recess diameter for service valve seat.
lBe sure to ream in circles concentric to the valve guide center.
lThis will enable](/img/5/57402/w960_57402-2028.png)
CYLINDER HEAD
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2. Ream cylinder head recess diameter for service valve seat.
lBe sure to ream in circles concentric to the valve guide center.
lThis will enable valve seat to fit correctly.
3. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in
heated oil.
4. Provide valve seats cooled well with dry ice. Force fit valve seat
into cylinder head.
CAUTION:
Avoid directly to touching cold valve seats.
5. Using valve seat cutter set or valve seat grinder, finish the seat
to the specified dimensions.
CAUTION:
When using valve seat cutter, firmly grip the cutter handle
with both hands. Then, press on the contacting surface all
around the circumference to cut in a single drive. Improper
pressure on with the cutter or cutting many different times
may result in stage valve seat.
Grind to obtain the dimensions indicated in figure.
6. Using compound, grind to adjust valve fitting.
7. Check again for normal contact.Oversize [0.5 mm (0.020 in)]
Intake : 37.000 - 37.016 mm (1.4567 - 1.4573 in)
Exhaust : 32.000 - 32.016 mm (1.2598 - 1.2605 in)
SEM795A
SEM008A
SEM934C
Standard
D1 dia. : 33.5 mm (1.3189 in)
D2 dia. : 35.1 - 35.3 mm (1.382 - 1.390 in)
D3 dia. : 39.0 - 39.2 mm (1.535 - 1.543 in)
D4 dia. : 28 mm (1.10 in)
D5 dia. : 29.9 - 30.1 mm (1.177- 1.185 in)
D6 dia. : 33.5 - 33.7mm (1.319 - 1.327 in)
SBIA0226E
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![NISSAN X-TRAIL 2003 Electronic Repair Manual EM-60
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CYLINDER HEAD
VALVE SPRING SQUARENESS
Set try square along the side of valve spring and rotate the spring.
Measure the maximum clearance between the top face of spring and
try square.
V NISSAN X-TRAIL 2003 Electronic Repair Manual EM-60
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CYLINDER HEAD
VALVE SPRING SQUARENESS
Set try square along the side of valve spring and rotate the spring.
Measure the maximum clearance between the top face of spring and
try square.
V](/img/5/57402/w960_57402-2029.png)
EM-60
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CYLINDER HEAD
VALVE SPRING SQUARENESS
Set try square along the side of valve spring and rotate the spring.
Measure the maximum clearance between the top face of spring and
try square.
VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD
Check valve spring pressure with valve spring seat installed at spec-
ified spring height.
CAUTION:
Do not remove valve spring seat.Limit : More than 1.9 mm (0.0748 in)
PBIC0080E
Standard: INTAKE EXHAUST
Free height 44.84-45.34 mm
(1.7654-1.7850
in)45.28-45.78 mm
(1.7827-1.8024 in)
Installation
height35.30 mm (1.390
in)35.30 mm (1.390
in)
Installation
load151-175 N (15.4-
17.8 kg, 34-39 lb)151-175 N (15.4-
17.8 kg, 34-39 lb)
Height during
valve open24.94 mm
(0.9819 in)26.39 mm (1.0390
in)
Load with
valve open358-408 N (36.5-
41.6 kg, 80-92 lb)325-371 N (33.1-
37.8 kg, 73-83 lb)
Identification
colorBlue Yellow
SEM113