2003 NISSAN X-TRAIL secure

TIMING CHAIN
EM-51
[QR20DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
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

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-62
[QR20DE]
ENGINE ASSEMBLY
1. Release fuel pressure. Refer toEC-34, "FUEL PRESSURE RELEASE"(WITH EURO-OBD),EC-399,
"FUEL PRESSURE RELEASE"(WITHOUT EURO-OBD).
2. Remove engine hood.
3. Drain coolant from radiator drain plug.
4. Remove the following parts.
lLH/RH under cover
lLH/RH Front wheel
lBattery
lAuxiliary drive belt; Refer toEM-14, "Removal and Installation of Auxiliary Drive Belt Auto- tensioner".
lAir duct and air cleaner case assembly; Refer toEM-15, "Removal and Installation".
lAlternator
lRadiator and radiator fan assembly; Refer toCO-12, "RADIATOR".
5. Disconnect engine room harness from the engine side and set it aside for easier work.
6. Disconnect all the body-side vacuum hoses and air hoses at engine side.
Engine room LH
7. Disconnect fuel hose, and plug it to prevent fuel from draining. Refer toEM-17, "
INTAKE MANIFOLD"
8. Disconnect heater hose, and install plug it to prevent engine coolant from draining.
9. Disconnect select cable from transaxle (A/T models).
10. Remove clutch operating cylinder from transaxle, and move it aside (M/T models).
11. Disconnect shift cable from transaxle (M/T models).
Engine room RH
12. Remove engine coolant reservoir tank.
13. Remove air conditioner compressor with piping connected from engine. Temporarily secure it on body
with a rope to avoid putting load on it.
Vehicle underbody
14. Remove exhaust front tube.
15. Remove propeller shaft.
16. Remove steering shaft from steering gear.
17. Disconnect power steering fluid cooler piping at a point between body and engine.
18. Remove ABS sensor from brake caliper.
19. Remove brake caliper with piping connected from steering knuckle. Temporarily secure it on body with a
rope to avoid load on it.
20. Remove LH/RH suspension from steering knuckle under strut.
Removal
21. Install engine slingers into front left of cylinder head and rear right of cylinder head.
lUse alternator bracket mounting bolt holes for the frontside.
22. Lift with hoist and secure the engine in position.Slinger bolts:
Front: 51.0 - 64.7 N·m (5.2 - 6.6 kg-m, 38 - 47 ft-lb)
Rear: 24.5 - 31.4 N·m (2.5 - 3.2 kg-m, 18 - 23 ft-lb)
KBIA0255E

ENGINE ASSEMBLY
EM-63
[QR20DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
lUse a manual lift table caddy or equivalently rigid tool such as a
jack or trestle. Securely support bottom of engine and transaxle,
and simultaneously adjust hoist tension.
CAUTION:
lPut a piece of wood or something similar as the support-
ing surface, secure a completely stable condition.
23. Remove RH engine mounting insulator.
24. Pull LH engine mounting through-bolt out.
25. Remove mounting bolts at front end of center member.
26. Remove front suspension member mounting bolts and nuts.
27. Remove engine, transaxle and transfer assembly with suspen-
sion member from vehicle downward by carefully operating sup-
porting tools.
CAUTION:
lDuring the operation, make sure that no part interferes
with body side.
lBefore and during this lifting, always check if any har-
nesses are left connected.
lDuring the removal operation, always be careful to pre-
vent vehicle from falling off the lift due to changes in the center of gravity.
lIf necessary, support vehicle by setting a jack or equivalent tool at the rear.
28. Remove power steering pump with piping connected from engine. Move it aside on suspension member.
29. Remove front engine mounting and rear engine mounting through-bolts to remove suspension member.
30. Remove starter motor.
31. Separate engine and transaxle.
INSTALLATION
Install in the reverse order of removal.
lDo not allow oil to get on mounting insulator. Be careful not to damage mounting insulator.
lWhen installation directions are specified, install parts according to the direction marks on them referring
to components illustration.
lMake sure that each mounting insulator is seated properly, and tighten mounting bolts and nuts.
INSPECTION AFTER INSTALLATION
lBefore starting engine check the levels of coolant, lubrications and working oils. If less than required
quantity, fill to the specified level.
lRun engine to check for unusual noise and vibration.
lWarm up engine thoroughly to make sure there is no leakage of coolant, lubricants, working oil, fuel and
exhaust gas.
lBleed air from passages in pipes and tubes of applicable lines.
KBIA0256E
KBIA0257E
KBIA0270E

EM-132
[YD22DDTi]
VACUUM PUMP
12. Disconnect electronic EGR control valve water hose and harness.
13. Disconnect heater hose.
14. Remove EGR tube.
15. Disconnect vacuum hose from vacuum pump side.
16. Remove camshaft position sensor.
17. Remove cylinder head rear cover plate.
18. Loosen and remove the installation bolts in rear cam sprocket.
lLoosen rear cam sprocket installation bolts by fixing the hexagonal portion of the camshaft.
19. Remove vacuum pump and cylinder head rear cover assembly.
lRemove and install vacuum pump, sprocket, drive chain and
chain guide as an assembly.
lLoosen mounting bolts in reverse order shown in figure.
lDo not remove any bolts not shown in figure. (Especially
never remove M6 bolts on vacuum pump.)
lUse seal cutter (special service tool) or other suitable tool to
remove.
INSTALLATION
1. Install vacuum pump and cylinder head rear cover assembly
onto cylinder head. Refer toEM-133, "
ASSEMBLY".
lApply Genuine Liquid Gasket or equivalent (Refer toEM-103,
"Precautions for Liquid Gasket".) to area shown in the figure.
lAttaching should be done with in 5 minutes after coating.
2. Tighten mounting bolts in order shown in the figure.
3. Install rear cam sprocket mounting bolts by fixing the hexagonal
portion of the camshaft. .
4. Tighten rear cam sprocket mounting bolts.
5. Install cylinder head rear cover plate.
lApply Genuine Liquid Gasket or equivalent (Refer toEM-103,
"Precautions for Liquid Gasket".) to area shown in the figure.
lAttaching should be done with in 5 minutes after coating.
CAUTION:
Never start engine with vacuum circuit being open. If
engine is started and vehicle is running while vacuum
pump is open (with vacuum hose disconnected), blow-by
flow rate will increase and engine may be damaged.
6. Install in reverse order of removal after this step.
lWhen vacuum hose is connected, insert it securely by at least
15 mm (0.59 in).
INSPECTION AFTER INSTALLATION
Check generated vacuum satisfies the specification at idle speed. Refer toEM-131, "INSPECTION BEFORE
REMOVAL".
SBIA0167E
SBIA0167E
SBIA0169E

EM-136
[YD22DDTi]
INJECTION TUBE AND FUEL INJECTOR
5. Remove nozzle oil seal.
lUsing a slotted screwdriver, pry flange to remove oil seal.
NOTE:
Nozzle oil seal seals between fuel injector and rocker cover. If
only injection tube shall be removed and installed, nozzle oil
seal replacement is not required.
6. Remove rocker cover. Refer toEM-147, "
Removal and Installa-
tion".
7. Remove spill tube mounting bolts and nut.
lLoosen bolts and nut to the reverse order of the shown in the
figure and remove then.
8. Following steps below, remove fuel injector.
a. Remove nozzle support.
b. Remove fuel injector. While rotating it to left and right, raise it to
remove.
CAUTION:
lHandle fuel injector carefully without giving any impact.
lDo not disassemble fuel injector.
c. If nozzle gasket remains in cylinder head, hook it with tip of a
slotted screwdriver and pull it out.
INSTALLATION
1. Following steps below, install fuel injector.
a. Install O-ring and nozzle gasket to fuel injector, and insert them into cylinder head.
b. Secure it with support.
SBIA0176E
SBIA0205E
SBIA0204E

EM-150
[YD22DDTi]
CAMSHAFT
6. Remove injection tube and fuel injector. Refer toEM-135, "Removal and Installation".
7. Remove secondary timing chain. Refer toEM-158, "
Removal and Installation".
8. Set the No. 1 cylinder at TDC on its compression stroke.
9. Remove the camshaft stroke.
lLoosen the camshaft gear installation bolt by fixing the hexag-
onal portion of the camshaft.
10. Remove the camshaft.
lPlace distinguishing marks on the right and left sides with
paint.
lLoosen and remove the installation bolt in reverse order
shown in the figure.
11. Remove the adjusting shim and valve lifter.
lRemove by taking notice of the installation position, and place
outside engine in order to prevent confusion.
INSPECTION AFTER REMOVAL
Visual Check of Camshaft
lCheck the camshaft for one sided wear or scratches.
lReplace the camshaft if there are abnormalities.
Camshaft Runout
lPrepare V-block on a flat surface and secure camshaft journals
No. 1 and No. 5.
lSet the dial gauge vertically on journal No. 3.
lRotate camshaft in one direction by hand, then read needle
movement on dial indicator. (Total indicator reading)
Height of Cam Nose
Measure by using a micrometer.
JEM159G
JEM160G
Limit : 0.04 mm (0.0016 in)
JEM161G
Standard:
Intake : 39.505 - 39.695 mm (1.5553 - 1.5628 in
Exhaust : 39.905 - 40.095 mm (1.5711 - 1.5785 in)
SEM549A

CAMSHAFT
EM-153
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM
INSTALLATION
1. Install the valve lifter and adjusting shim.
lMake sure that these are installed in the same position as before the removal process.
2. Install the camshaft.
lIdentify camshafts by the paint position and screw hole at the
rear end.
lInstall so that knock pins are positioned in the directions
showninthefigure.
3. Install camshaft brackets.
lInstall correctly, identifying brackets by the journal No. and
front mark on top surface.
4. Tighten bolts in the order shown in the figure according to the
following procedure:
a. Tighten to 2.0 N·m (0.2 kg-m, 17 in-lb).
lMake sure camshaft thrusting parts (on rear side) securely fit
in their mating parts on the cylinder head.
b. Tighten to 6 N·m (0.6 kg-m, 52 in-lb).
c. Tighten to 12 to 13 N·m (1.2 to 1.4 kg-m, 9 to 10 ft-lb).
5. Install camshaft sprockets.
lCamshaft sprockets are commonly used for RH and LH.
lAlign camshaft sprocket and dowel pin on camshaft, and
install.
lHolding the hexagonal part of camshaft with a wrench, tighten bolt securing camshaft sprocket.
6. Before installing spill tube after installing secondary timing chain, check and adjust valve clearance. Refer
toEM-154, "
Va l v e C le a r a n c e".
7. Hereafter, install in the reverse order of removal.Camshaft RH : Paint is at position A without screw hole.
Camshaft LH : Paint is at position B with screw hole.
JEM173G
SEM516G
JEM175G
JEM160G