2003 NISSAN X-TRAIL lock

EM-176
[YD22DDTi]
CAMSHAFT


Be careful of the intake and exhaust valve arrangement. The
valve arrangement is different from that in a normal engine.
NOTE:
The camshafts have, alternately, either intake valve or exhaust
valve. (Refer to figure.)
1. Remove charge air cooler. Refer to EM-135, "
Removal and Installation" .
2. Remove air duct. Refer to EM-133, "
Removal and Installation" .
3. Remove rocker cover. Refer to EM-168, "
Removal and Installation" .
4. Remove fuel injector. Refer to EM-157, "
Removal and Installation" .
5. Set the No. 1 piston to TDC on its compression stroke.

Turn crankshaft pulley clockwise so that the knock pin on
camshaft left side faces straight above. (No position indicator,
etc. is provided on the crankshaft pulley.)
6. Put an alignment mark with paint, etc. on crankshaft pulley and
on oil pump housing as an angle indicator.
7. While referring to the figure, measure the valve clearance
marked in the table below.
NOTE:

The injection order is 1-3-4-2.
SBIA0178E
PBIC2533E
JEM177G
Measuring pointNo. 1No. 2No. 3No. 4
INT EXH INT EXH INT EXH INT EXH
When the No. 1
cylinder is in the
TDCXXX X
SBIA0180E

CAMSHAFT
EM-177
[YD22DDTi]
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Measure the valve clearance using the feeler gauge when
engine is cool (at normal temperature).
8. Set the No. 4 cylinder at TDC by rotating the crankshaft clockwise once. (360 degrees)
9. While referring to the figure, measure the valve clearance
marked in the table below.
10. If the valve clearance is outside the specification, adjust as fol-
lows.
ADJUSTMENTS

Remove adjusting shim for parts which are outside the specified valve clearance.
1. Extract engine oil on the upper side of the cylinder head (for the air blowing in step 6).
2. Rotate crankshaft to face the camshaft for adjusting shims that
are to be removed upward.
3. Grip camshaft with the camshaft pliers (special service tool),
then using camshaft as a support point, push adjusting shim
downward to compress valve spring.
CAUTION:
Do not damage camshaft, cylinder head and the outer cir-
cumference of valve lifter.Valve clearance (Cold):
Standard:
Intake : 0.24 - 0.32 mm (0.0094 - 0.0126 in)
Exhaust : 0.26 - 0.34 mm (0.0102 - 0.0134 in)
SBIA0181E
Measuring pointNo. 1No. 2No. 3No. 4
INT EXH INT EXH INT EXH INT EXH
When the No. 4
cylinder is in the
TDCXX XX
SBIA0182E
SBIA0183E
PBIC2321E

SECONDARY TIMING CHAIN
EM-181
[YD22DDTi]
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Loosen fixing bolts in reverse order of that shown in the figure
and remove them.

Remove No. 6, 10 and 11 bolts with the rubber washer as
space is limited for pulling them out.
CAUTION:

While front chain case is removed, cover openings to
prevent entry of foreign material into engine.

Do not remove two mass dampers on the back of
cover.
5. Set the No. 1 piston to TDC on its compression stroke.

Turn crankshaft pulley clockwise so that the alignment mark
(punched mark) on each camshaft sprocket is positioned as
shown in the figure.

No position indicator is provided on crankshaft pulley.

When installing, color coded links on secondary timing
chain can be used as alignment marks. Marking may not
be necessary for removal; however, make alignment
marks as required because the alignment mark on fuel
pump sprocket may not be easy to see.
6. Remove chain tensioner.
a. Push the plunger of chain tensioner and keep it pressed with a
push pin.
JEM121G
SBIA0189E
SEM515G
JEM124G

PRIMARY TIMING CHAIN
EM-191
[YD22DDTi]
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a. Apply a continuous bead of liquid gasket with the tube presser
(special service tool: WS39930000) on locations shown in the
figure.
Use Genuine Liquid Gasket or equivalent.
A: Apply bead so that it does not protrude into the oil passage.
B, C: Minimize overlapping area of bead, by starting and ending
at areas of bead as shown in the figure. Apply so that the portion
marked * comes at an external location but cannot be viewed
externally after engine assembly.
D: Leave the start and end areas of the bead slightly protruding
from the case surface.
b. Install four O-rings to the grooves of the cylinder block and fuel
pump bracket.
c. Install rear chain case.

When installing, align the dowel pin with the pin hole.
PBIC1255E
JEM141G

EM-194
[YD22DDTi]
PRIMARY TIMING CHAIN

a. Apply a continuous bead of liquid gasket with the tube presser
(special service tool: WS39930000) as shown in the figure.
A: Leave the start and end areas of the bead slightly protruding
from the surface.
B: Apply liquid gasket along upper end surface of oil pump hous-
ing.
b. Install oil pump drive spacer to crankshaft.

Install with the front mark (punched mark) facing the front of
the engine.
c. Install O-ring into the groove of rear chain case.
d. Install oil pump housing.

When installing, align the inner rotor in the direction of the two facing flats of oil pump drive spacer.

When installing, align the dowel pin with the pin hole.
e. Tighten fixing bolts in numerical order shown in the figure.
f. After tightening all the bolts, re-tighten in the same order.
14. Check gaps on upper oil pan mounting surface.

Using straightedge and feeler gauge, measure gaps between
the locations of the following parts:

If the measured value is out of the standard, install again.
15. Install crankshaft pulley.
a. Install crankshaft pulley to crankshaft.
JEM144G
JEM145G
JEM133G
Oil pump housing and rear chain case:
Standard : – 0.09 to 0.09 mm (– 0.0035 to 0.0035 in)
Rear chain case and cylinder block:
Standard : – 0.19 to 0.07 mm (– 0.0075 to 0.0028 in)
JEM146G

EM-196
[YD22DDTi]
CYLINDER HEAD

CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00LRV
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Using CONSULT-II, make sure no error codes are indicated for self-diagnosis items. Refer to EC-905,
"Basic Inspection" (WITH EURO-ODB) or EC-1231, "Basic Inspection" (WITHOUT EURO-ODB).

Do not disconnect CONSULT-II until the end of this operation; it will be used to check engine rpm and
for error detection at the end of this operation.
3. Disconnect the negative battery terminal.
4. Remove charge air cooler. Refer to EM-135, "
Removal and Installation"
5. To prevent fuel from being injected during inspection, remove
fuel pump fuse [ENG CONT 2 (20A)] from fuse box on the left
side of engine room.

Among marks on fuse box, [ENG CONT 2 (20A)] is for fuel
pump fuse.
6. Remove glow plugs from all the cylinders. Refer to EM-152,
"Removal and Installation" .
CAUTION:

Before removal, clean the surrounding area to prevent
entry of any foreign materials into engine.

Carefully remove glow plugs to prevent any damage or
breakage.

Handle with care to avoid applying any shock to glow plugs.
7. Install compression gauge adapter (special service tool) to
installation holes of glow plugs and connect compression gauge
for diesel engine.
8. Connect battery negative terminal.
9. 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.

Always use a fully-charged battery to obtain specified engine
speed.
Compression pressure
Unit: kPa (bar, kg/cm2 , psi)/rpm

When engine rpm is out of the specified range, check the specific gravity of battery liquid. Measure
again under corrected conditions.

If engine rpm exceeds the limit, check valve clearance and combustion chamber components (valves,
valve seats, cylinder head gaskets, piston rings, pistons, cylinder bores, cylinder block upper and lower
surfaces) and measure again.

If compression pressure is low in some cylinders, apply engine oil from glow plug installation hole. Then
check pressure again.
–If compression pressure becomes normal after applying engine oil, piston ring may be worn or dam-
aged. Check piston ring for malfunction. If any, replace piston ring.
–If compression pressure is still low after applying engine oil, valve may be malfunctioning. Check valve
for malfunction. If contact malfunction is found, replace valve or valve seat.

If compression pressure in adjacent two cylinders is low after applying engine oil, pressure may be
leaking from gasket. In this case, replace cylinder head gasket.
PBIC0680E
: 18 - 22 N·m (1.8 - 2.2 kg-m, 13 - 16 ft-lb)
SEM112G
Standard Minimum Difference limit between cylinders
2,991 (29.9, 30.5, 434)/200 2,452 (24.5, 25.0, 356)/200 490 (4.9, 5.0, 71)/200

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

CYLINDER HEAD
EM-199
[YD22DDTi]
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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