NISSAN X-TRAIL 2001 Service Repair Manual

ENGINE ASSEMBLY
EM-71
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●Use a manual lift table caddy or equivalently rigid tool such as
a jack or trestle. Securely support bottom of engine and tran-
saxle, and simultaneously adjust hoist tension.
CAUTION:
Put 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:
●During the operation, make sure that no part interferes
with body side.
●Before and during this lifting, always check if any har-
nesses are left connected.
●During the removal operation, always be careful to pre-
vent vehicle from falling off the lift due to changes in the center of gravity.
●If 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. Refer to MT-15, "
TRANSAXLE ASSEMBLY" (M/T models) or AT- 4 1 8 ,
"REMOVAL AND INSTALLATION" (A/T models)
INSTALLATION
Install in the reverse order of removal.
●Do not allow engine oil to get on mounting insulator. Be careful not to damage mounting insulator.
●When installation directions are specified, install parts according to the direction marks on them referring
to components illustration.
●Make sure that each mounting insulator is seated properly, and tighten mounting bolts and nuts.
INSPECTION AFTER INSTALLATION
●Before starting engine, check the levels of engine coolant, lubrications and working engine oils. If less
than required quantity, fill to the specified level.
●Run engine to check for unusual noise and vibration.
●Warm up engine thoroughly to make sure there is no leakage of engine coolant, lubricants, working
engine oil, fuel and exhaust gas.
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EM-72
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ENGINE ASSEMBLY
●Bleed air from passages in pipes and tubes of applicable lines.

CYLINDER BLOCK
EM-73
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CYLINDER BLOCKPFP:11010
Disassembly and AssemblyEBS00KNU
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1. Cylinder block 2. O-ring 3. Crankshaft position sensor (POS)
4. Knock sensor 5. Oil pressure switch 6. Lower cylinder block
7. Lower cylinder block bolt 8. Snap ring 9. Connecting rod
10. Connecting rod bearing 11. Connecting rod bearing cap 12. Connecting rod bolt
13. Piston 14. Oil ring 15. Second ring
16. Top ring 17. Piston pin 18. Thrust bearing
19. Main bearing upper 20. Crankshaft 21. Main bearing lower
22. Rear oil seal 23. Pilot convertor (A/T model) 24. Signal plate
25. Drive plate (A/T model) 26. Reinforce plate (A/T model) 27. Flywheel (M/T model)

EM-74
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CYLINDER BLOCK
CAUTION:
Apply new engine oil to parts marked in illustration before installation.
DISASSEMBLY
1. Remove engine and transaxle assembly from vehicle, and separate transaxle from engine. Refer to EM-
69, "ENGINE ASSEMBLY" .
2. Mount engine on an engine stand with the following procedure.
a. Remove oil cooler on right side of cylinder block. Refer to LU-13, "
OIL COOLER" .
b. Install engine sub-attachment to right side of cylinder block.
●Do not use bolt hole at the upper right looking from bolt inser-
tion side.
●Machine a bolt hole at the lower right of the engine sub-
attachment looking from bolt insertion side shown in the fig-
ure.
c. Lift engine, and mount it onto the engine stand.
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CYLINDER BLOCK
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●A commercial engine stand can be used.
NOTE:
This example is an engine stand for holding at transaxle
mounting side with the flywheel or drive plate removed.
3. Drain engine oil and engine coolant from inside of engine.
4. Remove the following components and associated parts.
●Exhaust manifold and three way catalyst assembly; Refer to
EM-24, "
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST" .
●Intake manifold collector; Refer to EM-16, "INTAKE MANI-
FOLD" .
●Intake manifold and fuel tube assembly; Refer to EM-16, "INTAKE MANIFOLD" .
●Ignition coil; Refer to EM-29, "IGNITION COIL" .
●Rocker cover; Refer to EM-35, "ROCKER COVER" .
●Oil pan and oil strainer; Refer to EM-26, "OIL PAN AND OIL STRAINER" .
●Front cover, timing chain and balancer unit; Refer to EM-37, "TIMING CHAIN" .
●Camshaft; Refer to EM-46, "CAMSHAFT" .
●Cylinder head; Refer to EM-59, "CYLINDER HEAD" .
5. Remove knock sensor.
CAUTION:
Carefully handle the sensor avoiding shocks.
6. Remove crankshaft position sensor (POS).
CAUTION:
●Avoid impacts such as a dropping.
●Do not disassemble.
●Keep it away from metal particles.
●Do not place sensor close to magnetic materials.
7. Remove flywheel (M/T model) or drive plate (A/T model). Fix crankshaft with a stopper plate, and remove
mounting bolts.
Torx bit (size T55): Flywheel (M/T model)
Torx socket (size T55): Drive plate (A/T model)
CAUTION:
Be careful not to damage contact surface for the clutch disc
of the flywheel.
NOTE:
The flywheels, two block construction, allows movement in
response to transmission side pressure, or when twisted in its
rotational direction. Therefore, some amount of noise is normal.
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CYLINDER BLOCK
8. Remove pilot converter using Tool or suitable tool. (A/T model)
NOTE:
M/T models have no pilot push.
9. Remove the piston and connecting rod assembly.
a. Position the crankshaft pin corresponding to the connecting rod
to be removed onto the bottom dead center.
b. Remove the connecting rod cap.
c. Using a hammer handle or similar tool, push the piston and con-
necting rod assembly out to the cylinder head side.
●Before removing the piston and connecting rod assembly,
check the connecting rod side clearance. Refer to EM-89,
"CONNECTING ROD SIDE CLEARANCE" .
10. Remove the connecting rod bearings.
CAUTION:
When removing them, note the installation position. Keep them in the correct order.
11. Remove the piston rings form the piston.
●Use a piston ring expander.
CAUTION:
●When removing the piston rings, be careful not to dam-
age the piston.
●Be careful not to damage piston rings by expanding
them excessively.
●Before removing the piston rings, check the piston ring
side clearance. Refer to EM-90, "
PISTON RING SIDE
CLEARANCE" .
12. Remove the piston from the connecting rod as follows.
a. Using a snap ring pliers, remove the snap ring.
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CYLINDER BLOCK
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b. Heat piston to 60 to 70°C (140 to 158°F) with drier or equivalent.
c. Push out piston pin with stick of outer diameter approximately 19
mm (0.75 in).
13. Remove lower cylinder block mounting bolts.
●Loosen them in the reverse order shown in the figure, and
remove them.
●Use Torx socket (size E14) for bolts No. 1 to 10.
●Before loosening lower cylinder block mounting bolts, mea-
sure crankshaft side clearance. Refer to EM-88, "
CRANK-
SHAFT END PLAY" .
14. Remove lower cylinder block.
●Using Tool (Seal cutter), cut liquid gasket off, and remove it
from cylinder block.
CAUTION:
Be careful not to damage the mounting surface.
15. Remove crankshaft.
CAUTION:
●Be careful not damage or deform the signal plate
mounted on the crankshaft.
●When setting crankshaft on a flat floor surface, use a
block of wood to avoid interference between the signal
plate and the floor surface.
●Do not remove signal plate unless it is necessary to do
so.
NOTE:
When removing or installing signal plate, use Torx bit size T30.
16. Pull rear oil seal out from rear end of crankshaft.
NOTE:
When replacing rear oil seal without removing cylinder block, use a screwdriver to pull it out from between
crankshaft and block.
CAUTION:
Be careful not to damage the crankshaft and cylinder block.
17. Remove main bearings and thrust bearings from cylinder block and lower cylinder block.
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EM-78
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CYLINDER BLOCK
CAUTION:
Identify installation positions, and store them without mixing them up.
ASSEMBLY
1. Fully air-blow the engine coolant and engine oil passages in the cylinder block, the cylinder bore and the
crankcase to remove any foreign material.
CAUTION:
Use a goggles to protect your eye.
2. Install each plug to the cylinder block.
●Apply liquid gasket.
Use Genuine Liquid Gasket or equivalent.
●Replace the copper washers with new ones.
3. Install the main bearings and the thrust bearings.
a. Remove dust, dirt, and engine oil on the bearing mating sur-
faces of the cylinder block and the lower cylinder block.
b. Install the thrust bearings to the both sides of the No. 3 journal
housing on the cylinder block.
●Install the thrust bearings with the oil groove facing the crank-
shaft arm (outside).
c. Install the main bearings paying attention to the direction.
●The main bearing with an oil hole and groove goes on the cyl-
inder block. The one without them goes on the lower cylinder
block.
●Only the main bearing (on the cylinder block) for No. 3 journal
has different specifications.
●Before installing the bearings, apply engine oil to the bearing
surface (inside). Do not apply engine oil to the back surface,
but thoroughly clean it.
●When installing, align the bearing stopper to the notch.
●Ensure the oil holes on cylinder block and those on the corre-
sponding bearing are aligned.
4. Install the signal plate to the crankshaft.
a. Position crankshaft and signal plate using a positioning dowel
pin, and tighten mounting bolts.
b. Remove dowel pin.
CAUTION:
Be sure to remove dowel pin.
NOTE:
Dowel pins of crankshaft and signal plate are provided as a set
for each.
If dowel pin is not available (when reusing crankshaft and sig-
nal), use M6-bolt (length below the head of the bolt should be 10
mm or more) as a substitute.
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CYLINDER BLOCK
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5. Install the crankshaft to the cylinder block.
●While turning the crankshaft by hand, check that it turns smoothly.
6. Install the lower cylinder block.
● Apply liquid gasket or equivalent to positions shown in the fig-
ure.
Use Genuine Liquid gasket or equivalent.
NOTE:
Cylinder block and lower cylinder block are machined
together. Neither of them can be replaced as a single unit.
CAUTION:
After liquid gasket is applied, rear oil seal installation
must be finished within 5 minutes. Therefore, the follow-
ing procedure must be performed quickly.
7. Tighten lower cylinder block mounting bolts in the numerical
order in the figure by following the procedure below.
a. Apply new engine oil to threads and seat surfaces of mounting
bolts.
b. Tighten M10 (0.39 in) bolts in order from No. 1 to 10 with tighten-
ing torque 36.3 to 42.2 N·m (3.7 to 4.3 kg-m, 27 to 31 ft-lb).
NOTE:
There are two more processes to complete the tightening of
mounting bolts (See step 9). However stop procedure here to
install rear oil seal.
8. Install rear oil seal.
CAUTION:
Complete this step within approximately 5 minutes after liq-
uid gasket is applied to the lower cylinder block.
●Press oil seal between cylinder block and crankshaft with a
suitable drift.
●Be careful not to touch the grease on the oil seal lip.
●Be careful not to cause scratches or burrs when pressing in
the oil seal.
●Press in rear oil seal to the position shown in the figure.
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EM-80
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CYLINDER BLOCK
9. Restart tightening of lower cylinder block bolts with the following
procedure.
NOTE:
Step “a ”and “b” have been completed before installation of rear
oil seal (step 7).
a. Step “a” has been completed before installation of rear oil seal.
b. Step “b” has been completed before installation of rear oil seal.
c. Tighten M10 (0.39 in) bolts to 60 to 65° (target: 60°) in order
from No. 1 to 10.
d. Tighten M8 (0.31 in) bolts to 19.6 to 24.5 N·m (2.0 to 2.5 kg-m,
15 to 18 ft-lb) in order from No. 11 to 22.
CAUTION:
In step “c”, use an angle wrench (special service tool) or
protractor to check tightening angle. Do not make judgment
by visual inspection.
●After installing mounting bolts, make sure that crankshaft can
be rotated smoothly by hand.
●Wipe off completely any protruding liquid gasket on front side
of engine.
●Check crankshaft side clearance. Refer to EM-88, "CRANK-
SHAFT END PLAY" .
10. Install the piston to the connecting rod.
a. Using a snap ring pliers, install the snap ring to the grooves of
the piston rear side.
●Insert it fully into groove to install.
b. Install the piston to the connecting rod.
●Using an industrial drier or similar tool, heat the piston until the piston pin can be pushed in by hand
without excess force [approx. 60 to 70 °C (140 to 158 °F)]. From the front to the rear, insert the piston
pin into the piston and the connecting rod.
●Assemble so that the front mark on the piston crown and the
oil holes and the cylinder No. on the connecting rod are posi-
tioned as shown in the figure.
c. Install the snap rings to the front of the piston.
● After installing, check that the connecting rod moves
smoothly.
11. Using a piston ring expander, install the piston rings.
CAUTION:
Be careful not to damage the piston.
●Position each ring with the gap as shown in the figure refer-
ring to the piston front mark.
●Install the top ring and the second ring with the stamped sur-
face facing upward.
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Stamped mark : 1E (top ring)
: 2A (second ring)
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