2003 NISSAN X-TRAIL clock

EM-14
[QR20DE]
DRIVE BELTS
2. Insert a rod approximately 6 mm (0.24in) in diameter through the rear of engine into holding boss to fix
tensioner pulley.
3. Hook auxiliary drive belt onto all pulleys except for water pump. Hook belt onto water pump pulley at the
end.
CAUTION:
Confirm belts are completely set to pulleys.
4. Release tensioner, and apply tensions to belt.
5. Turn crankshaft pulley clockwise several times to equalize tension between each pulley.
6. Confirm tensions of belt at indicator is within the allowable use range. Refer toEM-13, "
Checking Drive
Belts".
Removal and Installation of Auxiliary Drive Belt Auto- tensionerEBS009QR
REMOVAL
1. Remove front RH engine side cover.
2. Remove auxiliary drive belt.
lKeep tensioner pulley fixed with a tool such as a short-length screwdriver.
3. Remove alternator and then auxiliary drive belt auto-tensioner.
lRemove and install auxiliary drive belt auto-tensioner by fixing tension pulley.
INSTALLATION
lInstall in the reverse order of removal.
CAUTION:
Install auxiliary drive belt auto-tensioner carefully not to damage the water pump pulley.
KBIA0092E

EM-34
[QR20DE]
CAMSHAFT
a. Loosen bolts in reverse order shown in the figure.
b. Remove the cover using Tool (Seal cutter).
5. Set No.1cylinder at TDC on its compression stroke with the
folowing procedure.
a. Open splash cover on RH under cover.
b. Rotate crankshaft pulley clockwise, and align mating marks for
TDC with timing indicator on front cover.
c. At the same time, make sure that the mating marks on camshaft
sprockets are located as shown in the figure.
lIf not, rotate crankshaft pulley one more turn to line up the
mating marks to the positions in the figure.
6. Pull chain guide between camshaft sprockets out through front
cover.
7. Remove camshaft sprockets with the following procedure.
a. Line up the mating marks on camshaft sprockets, and paint an
indelible mating mark on timing chain link plate.
b. Push in tensioner plunger. Insert a stopper pin into hole on ten-
sioner body to fix chain tensioner and remove it.
lUse wire of 0.5mm (0.02in) in diameter as a stopper pin.
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KBIA0190E
KBIA0115E
KBIA0048E

EM-40
[QR20DE]
CAMSHAFT
ValveLifterHoleDiameter
lUsing inside micrometer, measure diameter of valve lifter hole of
cylinder head.
Calculation of Valve Lifter Clearance
(Valve lifter clearance) = (hole diameter of valve lifter) – (outer diam-
eter of valve lifter).
lWhen out of specified range, referring to each specification of outer and inner diameter, replace either or
both valve lifter and cylinder head.
Valve ClearanceEBS009R1
INSPECTION
lPerform inspection as follows after removal, installation or replacement of camshaft or valve-related parts,
or if there is unusual engine conditions due to changes in valve clearance over time (starting, idling, and/
or noise).
1. Warm up engine. Then stop it.
2. Remove front RH engine side cover.
3. Remove rocker cover.
Refer toEM-31, "
Removal and Installation".
4. Turn crankshaft pulley in normal direction (clockwise when
viewed from front) to align TDC identification notch (without
paint mark) with timing indicator.
5. At this time, check that the both intake and exhaust cam noses
of No. 1 cylinder face outside.
lIf they do not face outside, turn crankshaft pulley once more. Standard:
34.000 - 34.021 mm (1.3386 - 1.3394 in)
Standard:
0.020 - 0.056 mm (0.0008 - 0.0022 in)
PBIC0043E
KBIA0190E
KBIA0400J

EM-44
[QR20DE]
TIMING CHAIN
CAUTION:
Apply new engine oil to parts marked in illustration before installation.
REMOVAL
1. Remove the parts listed below.
lEngine hood
lUndercover
lPCV hose
lIgnition coil; Refer toEM-27, "Removal and Installation".
lRocker cover; Refer toEM-31, "Removal and Installation".
lEngine coolant reservoir tank
lAuxiliary drive belt; Refer toEM-13, "Removal and Installation".
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".
2. Remove A/C compressor from engine. Temporarily secure A/C compressor to vehicle side with a rope to
avoid putting a load on them.
3. Remove bracket mounting bolts for fixing A/C piping on right strut housing and exhaust manifold cover.
Doing so simplifies moving.
4. Move power steering pump with piping connected, and secure it to vehicle side temporarily.
5. Pull power steering reservoir tank out of brackets to move power steering piping.
CAUTION:
lTo avoid power steering fluid leakage, temporarily fix reservoir tank vertically.
6. Suspend engine with a hoist, and support the engine posture.
For installation of engine slingers, refer toEM-61, "
ENGINE ASSEMBLY"
7. Remove RH engine mount insulator.
8. Remove center member and rear engine mounting bracket.
9. Drain engine oil.
10. Remove oil pan upper and lower, and oil strainer. Refer toEM-24, "
Removal and Installation".
11. Remove Intake valve timing control cover.
a. Loosen bolts in reverse order shown in the figure.
b. Remove the cover using Tool (Seal cutter).
12. Pull chain guide between camshaft sprockets out through front
cover.
13. Set No.1 cylinder at TDC on its compression stroke with the fol-
lowing procedure.
a. Rotate crankshaft pulley clockwise and align mating marks to
timid indicator on front cover.
KBIA0085E
KBIA0190E

EM-54
[QR20DE]
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

EM-72
[QR20DE]
CYLINDER BLOCK
12. Install the connecting rod bearings to the connecting rod and the
connecting rod cap.
lWhen installing the connecting rod bearings, apply engine oil
to the bearing surface (inside). Do not apply oil to the back
surface, but thoroughly clean it.
lWhen installing, align the connecting rod bearing stopper pro-
trusion with the notch of the connecting rod to install.
lCheck the oil holes on the connecting rod and those on the
corresponding bearing are aligned.
13. Install the piston and connecting rod assembly to the crankshaft.
lPosition the crankshaft pin corresponding to the connecting
rod to be installed onto the bottom dead center.
lApply engine oil sufficiently to the cylinder bore, piston and
crankshaft pin.
lMatch the cylinder position with the cylinder No. on the con-
necting rod to install.
lUsing a piston ring compressor, install the piston with the front
mark on the piston crown facing the front of the engine.
CAUTION:
Be careful not to damage the crankshaft pin, resulting from
an interference of the connecting rod big end.
14. Install the connecting rod cap.
lMatch the stamped cylinder number marks on the connecting
rodwiththoseonthecaptoinstall.
15. Tighten the connecting rod bolt as follows.
a. Apply engine oil to the threads and seats of the connecting rod
bolts.
b. Tighten bolts to 18.6 to 20.6 N·m (1.9 to 2.1 kg-m, 14 to 15 ft-lb).
c. Put mating (with paint) on each bolt and connecting rod cap, all
in the same direction (when using a protractor).
d. Then tighten all bolts 90 to 95 degrees clockwise (target: 90
degrees) (Angle tightening).
CAUTION:
Always use either an angle wrench or protractor. Avoid
tightening based on visual check alone.
lAfter tightening the bolt, make sure that the crankshaft rotates smoothly.
lCheck the connecting rod side clearance. Refer toEM-81, "CONNECTING ROD SIDE CLEARANCE".
PBIC0266E
PBIC0267E
KBIA0067E
KBIA0068E

FUEL SUPPLY PUMP
EM-139
[YD22DDTi]
C
D
E
F
G
H
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J
K
L
MA
EM
5. Remove RH front wheel.
6. Remove RH splash cover (combined with under cover)
7. Remove fuel hose from fuel supply pump.
8. Remove the harness connector from the fuel supply pump.
9. Remove the fuel supply pump rear bracket.
lLoosen the fuel bolts in the reverse order of that show in the
figure and remove them.
10. Remove fuel supply pump center spill tube.
11. Remove front chain case.
lLoosen fixing bolts in the reverse order of that shown in the
figure and remove them.
lRemove No. 6, 10 and 11 bolts with the rubber washer as
space is limited for pulling them out.
CAUTION:
lWhile front chain case is removed, cover openings to
prevent entry of foreign material into engine.
lDo not remove two mass dampers on the back of cover.
12. Set the No. 1 piston to TDC on its compression stroke.
lTurn crankshaft pulley clockwise so that the alignment mark
(punched mark) on each camshaft sprocket is positioned as
showninthefigure.
lNo position indicator is provided on the crankshaft pul-
ley.
lWhen installing, color coded links on the secondary tim-
ing 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
supply pump sprocket may not be easy to see.
SBIA0214E
JEM121G
SBIA0189E
SEM515G

EM-154
[YD22DDTi]
CAMSHAFT
Valve Clearance
EBS00BOJ
INSPECTION
lWhen the camshaft or parts in connection with valves are
removed or replaced, and a malfunction has occurred (poor
starting, idling, or other malfunction) due to the mis adjustment
of the valve clearance, inspect as follows.
lInspect and adjust when the engine is cool (at normal tempera-
ture).
lBe 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 an intake valve or an
exhaust valve.(Refer to illustration)
1. Drain engine coolant. Refer toCO-30, "
Changing Engine Coolant".
2. Remove charge air cooler. Refer toEM-114, "
Removal and Installation".
3. Remove air duct and air inlet pipe. Refer toEM-112, "
Removal and Installation".
4. Remove rocker cover. Refer toEM-147, "
Removal and Installation".
5. Remove vacuum pump. Refer toEM-131, "
Removal and Installation".
6. Remove injection tube and fuel injector. Refer toEM-135, "
Removal and Installation".
7. Remove secondary timing chain. Refer toEM-158, "
Removal and Installation"
Check valve clearance while engine is cold and not running.
8. Set the No. 1 piston to TDC on its compression stroke.
lTurn crankshaft pulley clockwise so that the knock pin on
camshaft LH faces straight above. (No position indicator, etc.
is provided on the crankshaft pulley.)
9. Put an alignment mark with paint, etc. on the crankshaft pulley
and on the oil pump as an angle indicator.
10. While referring to the figure, measure the valve clearance
marked in the table below.
lThe injection order is 1-3-4-2.
SBIA0178E
SBIA0179E
JEM177G
Measuring pointNo. 1 No. 2 No. 3 No. 4
INT EXH INT EXH INT EXH INT EXH
When the No. 4
cylinder is in the
TDCXXX X
SBIA0180E