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10. Complete this operation as follows:
a. Turn the ignition switch to “OFF”.
b. Disconnect battery negative terminal.
c. Install glow NISSAN X-TRAIL 2003 Service Repair Manual CYLINDER HEAD
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10. Complete this operation as follows:
a. Turn the ignition switch to “OFF”.
b. Disconnect battery negative terminal.
c. Install glow](/manual-img/5/57404/w960_57404-248.png)
CYLINDER HEAD
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10. Complete this operation as follows:
a. Turn the ignition switch to “OFF”.
b. Disconnect battery negative terminal.
c. Install glow plug and install all the parts removed in step 4.
d. Install fuel pump fuse [ENG CONT (20A)].
e. Connect battery negative terminal.
f. Using CONSULT-II make sure no DTC is indicated for items of self-diagnosis.
Removal and InstallationEBS00LRW
REMOVAL
1. Drain engine coolant. Refer to CO-31, "Changing Engine Coolant" .
2. Remove the following:
Charge air cooler (Refer to EM-135, "Removal and Installation" .)
Rocker cover (Refer to EM-168, "Removal and Installation" .)
Air cleaner and air duct (Refer to EM-133, "Removal and Installation" .)
Vacuum pump (Refer to EM-153, "Removal and Installation" .)
Spill tube and fuel injector (Refer to EM-157, "Removal and Installation" .)
Intake manifold (Refer to EM-136, "Removal and Installation" .)
Exhaust manifold and Turbocharger (Refer to EM-141, "Removal and Installation" .)
Secondary timing chain (Refer to EM-180, "Removal and Installation" .)
Camshaft (Refer to EM-170, "Removal and Installation" .)
3. Remove cylinder head assembly.
1. Glow plug 2. Cylinder head assembly 3. Cylinder head bolt
4. Copper washer 5. Engine coolant temperature sensor 6. Gasket
7. Water outlet 8. Dowel pin 9. Gasket
10. Glow harness 11. Glow plate 12. Cap
PBIC2437E
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![NISSAN X-TRAIL 2003 Service Repair Manual EM-198
[YD22DDTi]
CYLINDER HEAD
Remove cylinder head bolts in reverse order as shown in the
figure with the cylinder head bolt wrench (commercial service
tool).
Lift up cylinder head assembly to NISSAN X-TRAIL 2003 Service Repair Manual EM-198
[YD22DDTi]
CYLINDER HEAD
Remove cylinder head bolts in reverse order as shown in the
figure with the cylinder head bolt wrench (commercial service
tool).
Lift up cylinder head assembly to](/manual-img/5/57404/w960_57404-249.png)
EM-198
[YD22DDTi]
CYLINDER HEAD
Remove cylinder head bolts in reverse order as shown in the
figure with the cylinder head bolt wrench (commercial service
tool).
Lift up cylinder head assembly to avoid interference with
dowel pins located between the cylinder block and cylinder
head, and remove cylinder head assembly.
CAUTION:
Remove glow plug in advance to avoid damage as the tip
of the glow plug projects from the bottom of cylinder
head, or, place wood blocks beneath both ends of cylin-
der head to keep the cylinder bottom from any contact.
For glow plug removal, the following shall be noted.
CAUTION:
To avoid breakage, do not remove glow plug unless necessary.
Perform continuity test with glow plug installed.
Keep glow plug from any impact. [Replace if dropped from a height 10 cm (3.94 in) or higher.]
Do not use air impact wrench.
INSPECTION AFTER REMOVAL
Cylinder Head Bolt Deformation
Using micrometer, measure the outer diameters d1 and d2 of
bolt thread as shown in the figure.
If the necking point can be identified, set it as measuring point
d1.
Calculate the difference between d1 and d2.
If it exceeds the limit, replace cylinder head bolt.
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 passages for oil or water.
2. At each of several locations on bottom surface of cylinder head,
measure distortion in six directions.
If it exceeds the limit, replace cylinder head.
JEM149G
Limit : 0.15 mm (0.0059 in)
JEM171G
Limit : 0.1mm (0.004 in)
SEM496G
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INSTALLATION
Before installation, remove old liquid gasket from mating surface of all liquid gasket applied parts.
1. Install cylinder head NISSAN X-TRAIL 2003 Service Repair Manual CYLINDER HEAD
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INSTALLATION
Before installation, remove old liquid gasket from mating surface of all liquid gasket applied parts.
1. Install cylinder head](/manual-img/5/57404/w960_57404-250.png)
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INSTALLATION
Before installation, remove old liquid gasket from mating surface of all liquid gasket applied parts.
1. Install cylinder head gasket.
Cylinder head gasket to be installed is selected by its thickness through the following procedure.
–When replacing gasket alone
Install a gasket with same thickness as that of the one removed.
Identify the thickness of gasket by the number of cut-outs on
the rear RH side.
*: Measured with head bolts tightened
Gasket thickness can be identified at the location shown in
the figure by the numbers of cut-outs before removal.
–When the following parts have been repaired/replaced:
With cylinder block upper surface and/or crankshaft pin journal ground
With cylinder block, pistons, connecting rods, and/or crankshaft replaced
a. Set piston at a point close to TDC.
b. Set the dial gauge at the location as shown in the figure. Turning
crankshaft gradually, set the gauge scale to “0” where the piston
protrusion is maximized.
c. Move the dial gauge stand so that the tip of dial gauge can con-
tact cylinder block. Read the difference.
d. Measure two points from each cylinder in order to obtain each
mean value of them. Choose a properly thick gasket corre-
sponding the highest number of the four values.
Gasket thickness* mm (in) Number of grade Number of cut-outs
0.900 (0.0354) 1 0
0.925 (0.0364) 2 1
0.950 (0.0374) 3 2
0.975 (0.0384) 4 3
1.000 (0.0394) 5 4
1.025 (0.0404) 6 5
MBIA0020E
PBIC0682E
SEM507G
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![NISSAN X-TRAIL 2003 Service Repair Manual EM-200
[YD22DDTi]
CYLINDER HEAD
*: Measured with head bolts tightened
2. Apply a continuous bead of liquid gasket with the tube presser
(special service tool: WS39930000) as shown in the figure.
A: NISSAN X-TRAIL 2003 Service Repair Manual EM-200
[YD22DDTi]
CYLINDER HEAD
*: Measured with head bolts tightened
2. Apply a continuous bead of liquid gasket with the tube presser
(special service tool: WS39930000) as shown in the figure.
A:](/manual-img/5/57404/w960_57404-251.png)
EM-200
[YD22DDTi]
CYLINDER HEAD
*: Measured with head bolts tightened
2. Apply a continuous bead of liquid gasket with the tube presser
(special service tool: WS39930000) as shown in the figure.
A: Apply bead so that it does not protrude into oil passage.
B: Minimize the overlapping area of the bead, with start and end
areas of bead as shown in the figure.
Apply so that the portion marked * comes at an external loca-
tion but cannot be viewed externally after engine is assembled.
3. Install cylinder head assembly.
Tighten bolts in numerical order as shown in the figure
according to the following procedure:
a. Apply engine oil to bolt threads and seat surfaces.
b. Tighten all bolts.
c. Tighten 180 degrees to 185 degrees [target: 180 degrees]
(angle tightening).
d. Loosen completely in reverse order of that shown in the figure.
e. Tighten all bolts.
f. Tighten 90 degrees to 95 degrees [target: 90 degrees] (angle
tightening).
g. Tighten another 90 degrees to 95 degrees [target: 90 degrees]
(angular tightening).
CAUTION:
When the angle wrench (special service tool) is not used, paint an alignment mark on the head
of cylinder head bolt and cylinder head surface before tightening. Check the angle with a pro-
tractor.
Piston protrusion mm (in) Gasket thickness* mm (in)Identification
Number of cut-outs
Less than 0.255 (0.0100) 0.900 (0.0354) 0
Less than 0.255 - 0.280 (0.0100 - 0.0110) 0.925 (0.0364) 1
Less than 0.280 - 0.305 (0.0110 - 0.0120) 0.950 (0.0374) 2
Less than 0.305 - 0.330 (0.0120 - 0.0130) 0.975 (0.0384) 3
Less than 0.330 - 0.355 (0.0130 - 0.0140) 1.000 (0.0394) 4
More than 0.355 (0.0140) 1.025 (0.0404) 5
PBIC1256E
: 35 - 44 N·m (3.5 - 4.5 kg-m, 26 - 32 ft-lb)
JEM149G
: 0 N·m (0 kg-m, 0 ft-lb)
: 35 - 44 N·m (3.5 - 4.5 kg-m, 26 - 32 ft-lb)
JEM166G
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4. After installing cylinder head, measure dimension from the front
end surface of cylinder block to that of cylinder head.
If out of the s NISSAN X-TRAIL 2003 Service Repair Manual CYLINDER HEAD
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4. After installing cylinder head, measure dimension from the front
end surface of cylinder block to that of cylinder head.
If out of the s](/manual-img/5/57404/w960_57404-252.png)
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4. After installing cylinder head, measure dimension from the front
end surface of cylinder block to that of cylinder head.
If out of the standard, check fitting of dowel pins and cylinder
head.
5. Install glow plug.
CAUTION:
To avoid damage, glow plugs should be removed only when required.
Handle with care to avoid applying shock. When dropped from approx. 10 cm (3.94 in) or higher,
always replace with a new one.
Before installing, remove carbon depositing on mounting hole of glow plug with a reamer.
6. Install engine coolant temperature sensor.
7. Install in the reverse order of removal.
Disassembly and AssemblyEBS00LRX
DISASSEMBLY
1. Remove adjusting shims and valve lifters.
Check the installation positions, and keep them to avoid being confused. Standard : 23.53 - 24.07 mm (0.9264 - 0.9476 in)
JEM172G
1. Adjusting shim 2. Valve lifter 3. Valve collet
4. Valve spring retainer 5. Valve spring 6. Valve oil seal
7. Valve spring seat 8. Valve guide 9. Cylinder head
10. Valve seat 11. Valve (Exhaust) 12. Valve (Intake)
PBIC2328E
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![NISSAN X-TRAIL 2003 Service Repair Manual EM-202
[YD22DDTi]
CYLINDER HEAD
2. Remove valve collet.
Using the valve spring compressor (special service tool),
compress valve spring. Using magnet hand, remove valve
collets.
3. Remove valve sp NISSAN X-TRAIL 2003 Service Repair Manual EM-202
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CYLINDER HEAD
2. Remove valve collet.
Using the valve spring compressor (special service tool),
compress valve spring. Using magnet hand, remove valve
collets.
3. Remove valve sp](/manual-img/5/57404/w960_57404-253.png)
EM-202
[YD22DDTi]
CYLINDER HEAD
2. Remove valve collet.
Using the valve spring compressor (special service tool),
compress valve spring. Using magnet hand, remove valve
collets.
3. Remove valve spring retainers and valve springs.
4. Remove valves as pressing valve stems toward combustion chamber.
Before removing valve, check the valve guide clearance. Refer to EM-203, "Valve Guide Clearance" .
NOTE:
Refer to the figure for intake and exhaust valve positions.
Intake and exhaust valve driving cams are provided alter-
nately for each camshaft.
5. Remove valve oil seals using the valve oil seal puller (special
service tool).
6. Remove valve spring seats.
7. Before removing valve seats, perform valve seat contact check.
Refer to EM-205, "
Valve Seat Contact" .
8. Before removing valve guides, perform valve guide clearance
check. Refer to EM-203, "
Valve Guide Clearance" .
ASSEMBLY
1. Install valve guides. Refer to EM-204, "Valve Guide Replacement" .
2. Install valve seats. Refer to EM-205, "
Valve Seat Replacement" .
3. Using the valve oil seal drift (special service tool), install valve oil
seals referring to the dimension shown in the figure.
4. Install valve spring seats.
PBIC2388E
SBIA0196E
JEM153G
JEM165G
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5. Install valves.
Install the valves with bigger outer diameter to intake valve
side.
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5. Install valves.
Install the valves with bigger outer diameter to intake valve
side.
Note that valve layout here is different from that](/manual-img/5/57404/w960_57404-254.png)
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5. Install valves.
Install the valves with bigger outer diameter to intake valve
side.
Note that valve layout here is different from that of conven-
tional engine.
6. Install valve spring.
7. Install valve spring retainers.
8. Using the valve spring compressor (special service tool), com-
press valve springs.
Then install valve collets using magnet hand.
After installing valve collets, tap the stem end using the plastic
hammer, and check the installation status.
9. Install valve lifters and adjusting shims to the same positions as before.
INSPECTION AFTER DISASSEMBLY
Valve Dimension
Check dimensions of each valve. For dimensions, refer to EM-
237, "Valve Dimensions" .
If dimensions are out of the standard, replace valve.
Valve Guide Clearance
Valve Stem Diameter
Measure diameter of valve stem with micrometer.
Valve Guide Inner Diameter
Measure inner diameter of valve guide with inside micrometer.
SBIA0196E
PBIC2388E
SEM188A
Standard
Intake : 5.965 - 5.980 mm (0.2348 - 0.2354 in)
Exhaust : 5.945 - 5.960 mm (0.2341 - 0.2346 in)
SEM938C
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![NISSAN X-TRAIL 2003 Service Repair Manual EM-204
[YD22DDTi]
CYLINDER HEAD
Valve Guide Clearance
(Valve guide clearance) = (Valve guide inner diameter) – (Valve stem diameter).
If it exceeds the limit, replace valve and/or valve guide.
V NISSAN X-TRAIL 2003 Service Repair Manual EM-204
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CYLINDER HEAD
Valve Guide Clearance
(Valve guide clearance) = (Valve guide inner diameter) – (Valve stem diameter).
If it exceeds the limit, replace valve and/or valve guide.
V](/manual-img/5/57404/w960_57404-255.png)
EM-204
[YD22DDTi]
CYLINDER HEAD
Valve Guide Clearance
(Valve guide clearance) = (Valve guide inner diameter) – (Valve stem diameter).
If it exceeds the limit, replace valve and/or valve guide.
Valve Guide Replacement
When removing valve guide, replace it with oversized [0.2 mm (0.0008 in)] valve guide.
1. Heat cylinder head to 110 to 130°C (230 to 266°F) in oil bath.
2. Using the valve guide drift (commercial service tool), tap valve
guides out from the combustion chamber side.
CAUTION:
Cylinder head contains heat, when working, wear protective
equipment to avoid getting burned.
3. Ream cylinder head valve guide hole with the valve guide
reamer (commercial service tool).Standard
Intake and Exhaust : 6.000 - 6.018 mm (0.2362 - 0.2369 in)
Valve guide clearance:
Standard
Intake : 0.020 - 0.053 mm (0.0008 - 0.0021 in)
Exhaust : 0.040 - 0.073 mm (0.0016 - 0.0029 in)
Limit
Intake : 0.08 mm (0.0031 in)
Exhaust : 0.10 mm (0.0039 in)
SEM008A
SEM931C
Valve guide hole diameter (for service parts):
10.175 - 10.196 mm (0.4006 - 0.4014 in)
SEM932C