lock NISSAN X-TRAIL 2003 Service User Guide

EM-4 INSTALLATION ..................................................199
Disassembly and Assembly ..................................201
DISASSEMBLY .................................................201
ASSEMBLY .......................................................202
INSPECTION AFTER DISASSEMBLY ..............203
ENGINE ASSEMBLY ..............................................208
Removal and Installation ......................................208
REMOVAL .........................................................209
INSTALLATION ..................................................211
INSPECTION AFTER INSTALLATION ..............211
CYLINDER BLOCK .................................................212
Disassembly and Assembly ..................................212
DISASSEMBLY .................................................213
ASSEMBLY .......................................................217
How to Select Piston and Bearing ........................222
DESCRIPTION ..................................................222
HOW TO SELECT PISTON ...............................222
HOW TO SELECT CONNECTING ROD BEAR-
ING ....................................................................223
HOW TO SELECT MAIN BEARING ..................224
Inspection After Disassembly ...............................226
CRANKSHAFT END PLAY ................................226
CONNECTING ROD SIDE CLEARANCE .........226
PISTON TO PISTON PIN CLEARANCE ...........226
PISTON RING SIDE CLEARANCE ...................227
PISTON RING END GAP ..................................227
CONNECTING ROD BEND AND TORSION .....228
CONNECTING ROD BIG END INNER DIAME-
TER ...................................................................228
CONNECTING ROD BUSHING OIL CLEAR-
ANCE .................................................................228
CYLINDER BLOCK TOP SURFACE DISTOR-TION ..................................................................229
MAIN BEARING HOUSING INNER DIAMETER .229
PISTON TO CYLINDER BORE CLEARANCE ..230
CRANKSHAFT JOURNAL OUTER DIAMETER .231
CRANKSHAFT PIN OUTER DIAMETER ..........231
CRANKSHAFT OUT-OF-ROUND AND TAPER .231
CRANKSHAFT RUNOUT ..................................232
CONNECTING ROD BEARING OIL CLEAR-
ANCE .................................................................232
MAIN BEARING OIL CLEARANCE ...................233
CRUSH HEIGHT OF MAIN BEARING ..............233
CRUSH HEIGHT OF CONNECTING ROD
BEARING ...........................................................233
MAIN BEARING CAP BOLT DEFORMATION ...234
CONNECTING ROD BOLT DEFORMATION ....234
OIL JET ..............................................................234
OIL JET RELIEF VALVE ....................................234
FLYWHEEL DEFLECTION ................................235
MOVEMENT AMOUNT OF FLYWHEEL ...........235
SERVICE DATA AND SPECIFICATIONS (SDS) ....236
Standard and Limit ................................................236
GENERAL SPECIFICATIONS ...........................236
INTAKE MANIFOLD AND EXHAUST MANI-
FOLD .................................................................236
DRIVE BELTS ....................................................236
CYLINDER HEAD ..............................................237
VALVE ................................................................237
CAMSHAFT .......................................................241
CYLINDER BLOCK ............................................241
PISTON, PISTON RING AND PISTON PIN ......242
CONNECTING ROD ..........................................243
CRANKSHAFT ...................................................243
AVAILABLE MAIN BEARING .............................244
AVAILABLE CONNECTING ROD BEARING .....244
MISCELLANEOUS COMPONENTS ..................244
Tightening Torque .................................................245

PRECAUTIONS
EM-5
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[QR]PRECAUTIONSPFP:00001
Precautions for Drain Engine CoolantEBS00KN0
Drain engine coolant when engine is cooled.
Precautions for Disconnecting Fuel PipingEBS00KN1

Before starting work, make sure no fire or spark producing items are in the work area.

Release fuel pressure before disassembly.

After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyEBS00KN2

When instructed to use special service tools, use the specified tools. Always be careful to work safely,
avoid forceful or uninstructed operations.

Exercise maximum care to avoid damage to mating or sliding surfaces.

Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.

Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.

When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified.
Precautions for Inspection, Repair and ReplacementEBS00KN3
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and InstallationEBS00MRZ

Use torque wrench to tighten bolts or nuts to specification.

When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is speci-
fied, do exactly as specified.

Replace with new gasket, packing, oil seal or O-ring.

Thoroughly wash, clean, and air-blow each part. Carefully check oil or coolant passages for any restriction
and blockage.

Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.

Release air within route when refilling after draining coolant.

Before starting engine, apply fuel pressure to fuel lines with turning ignition switch “ON” (with engine
stopped). Then make sure there are no leaks at fuel line connections.

After repairing, start engine and increase engine speed to check engine coolant, fuel, engine oil, and
exhaust systems for leakage.
Parts Requiring Angle TighteningEBS00KN5

Use an angle wrench (special service tool: KV10112100) for the final tightening of the following engine
parts.
–Cylinder head bolts
–Lower cylinder block bolts
–Connecting rod cap bolts
–Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angular
tightening)
–Balancer unit

Do not use a torque value for final tightening.

The torque value for these parts are for a preliminary step.

Ensure thread and seat surfaces are clean and coated with engine oil.

EM-12
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

Use the Chart Below to Help You Find the Cause of the Symptom.EBS00L7Q
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation
of noiseType of
noiseOperating condition of engine
Source of
noiseCheck itemRefer-
ence page Before
warm-
upAfter
warm-
upWhen
start-
ingWhen
idlingWhen
racingWhile
driving
To p o f
engine
Rocker
cover
Cylinder
headTicking or
clickingCA—AB—Tappet
noiseValve clearanceEM-61
Rattle C A — A B CCamshaft
bearing
noiseCamshaft journal oil
clearance
Camshaft runoutEM-56EM-55
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock—A—BB—Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bush-
ing oil clearanceEM-99
EM-101
Slap or
rapA ——BBAPiston
slap noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsionEM-104EM-100
EM-100
EM-101
Knock A B CBBBConnect-
ing rod
bearing
noiseConnecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearanceEM-101EM-105
Knock A B — A B CMain
bearing
noiseMain bearing oil clear-
ance
Crankshaft runoutEM-106EM-105
Front of
engine
Front
coverTapping or
tickingA A —BBBTiming
chain and
chain ten-
sioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operationEM-48
EM-44
Front of
engineSqueak-
ing or fizz-
ingAB—B—CDrive belt
(Sticking
or slip-
ping)Drive belt deflection
EM-13
Creaking A B A B A BDrive belt
(Slipping)Idler pulley bearing
operation
Squall
CreakA B —BABWater
pump
noiseWater pump operationCO-20,
"WATER
PUMP"

EM-14
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DRIVE BELTS

INSTALLATION
1. With box wrench, and while securely holding the hexagonal part in center of drive belt auto-tensioner pul-
ley, move the wrench handle in the direction of arrow (loosening direction of tensioner).
CAUTION:
Avoid placing hand in a location where pinching may occur if the holding tool accidentally comes
off.
2. Insert a rod approximately 6 mm (0.24 in) in diameter such as short-length screwdriver into the hole of
retaining boss to fix drive belt auto-tensioner pulley.
3. Hook drive belt onto all pulleys except for water pump, and then onto water pump pulley finally.
CAUTION:
Confirm belt is completely set to pulleys.
4. Release drive belt auto-tensioner, and apply tension to drive belt.
5. Turn crankshaft pulley clockwise several times to equalize tension between each pulley.
6. Confirm tension of drive belt at indicator is within the range of possible use. Refer to EM-13, "
Checking
Drive Belts" .
Removal and Installation of Drive Belt Auto-TensionerEBS00KNA
REMOVAL
1. Remove splash guard on RH undercover.
2. Remove drive belt. Refer to EM-13, "
Removal and Installation" .
3. Remove drive belt auto-tensioner.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
When installing drive belt auto-tensioner, be careful not to damage water pump pulley.
1. Drive belt auto-tensioner 2. Water pump pulley
PBIC2170E

OIL PAN AND OIL STRAINER
EM-25
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OIL PAN AND OIL STRAINERP F P : 1111 0
Removal and InstallationEBS00KNE
REMOVAL
WARNING:
To avoid the danger of being scalded, do not drain the engine oil when the engine is hot.
1. Remove RH and LH undercovers.
2. Drain engine oil. Refer to LU-8, "
Changing Engine Oil" .
3. Remove oil pan (lower) with the following procedure:
a. Loosen mounting bolts in reverse order as shown in the figure.
1. Oil level gauge 2. Oil level gauge guide 3. O-ring
4. Oil pan (upper) 5. Cylinder block 6. O-ring
7. Oil filter 8. O-ring 9. Drain plug washer
10. Oil strainer 11. Drain plug 12. Oil pan (lower)
13. Rear plate cover
PBIC2177E
KBIA0096E

OIL PAN AND OIL STRAINER
EM-27
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h. Insert seal cutter (special service tool) between oil pan (upper)
and cylinder block, and slide it by tapping on the side of the tool
with a hammer.
CAUTION:
Be careful not to damage the mating surface.
6. Remove O-rings at front cover side.
INSPECTION AFTER REMOVAL
Clean oil strainer if any object attached.
INSTALLATION
1. Install oil pan (upper) with the following procedure:
a. Use a scraper to remove old liquid gasket from mating surfaces.

Also remove the old liquid gasket from mating surface of cyl-
inder block.

Remove old liquid gasket from the bolt holes and threads.
CAUTION:
Do not scratch or damage the mating surfaces when clean-
ing off old liquid gasket.
b. Apply a continuous bead of liquid gasket with a tube presser
(special service tool: WS39930000) as shown in the figure.
Use Genuine Liquid Gasket or equivalent.
CAUTION:
Apply liquid gasket to outside of bolt hole for the positions
shown by arrows.
c. Install new O-rings at front cover side.
d. Tighten bolts in numerical order as shown in the figure.
No. 12 and 17 mean double tightening of bolts No. 1 and 2.
NOTE:
Refer to the following for locating bolts.
e. Tighten transaxle joint bolts. Refer to MT-17, "
TRANSAXLE ASSEMBLY" (M/T models) or AT- 4 1 3 ,
"REMOVAL AND INSTALLATION" (A/T models).
f. Install rear plate cover.
SEM365EA
MEM108A
SBIA0253E
M6 × 20 mm (0.79 in) : No. 18, 19
M8 × 25 mm (0.98 in) : No. 1, 2, 3, 11
M8 × 45 mm (1.77 in) : No. 4, 10, 13, 14, 15, 16
M8 × 100 mm (3.97 in) : No. 5, 6, 7, 8, 9
SBIA0233E

EM-46
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TIMING CHAIN

a. Rotate crankshaft pulley clockwise and align TDC mark to timing
indicator on front cover.
b. At the same time, make sure that the mating marks on camshaft
sprockets are located as shown in the figure.

If not, rotate crankshaft pulley one more turn to align mating
marks to the positions in the figure.
15. Remove crankshaft pulley with the following procedure:
a. Fix crankshaft pulley with a pulley holder (commercial service
tool), loosen crankshaft pulley bolt, and locate bolt seating sur-
face at 10 mm (0.39 in) from its original position.
b. Attach a pulley puller (special service tool) in the M 6 thread hole
on crankshaft pulley, and remove crankshaft pulley.
16. Remove front cover with the following procedure:
KBIA0190E
PBIC2351E
PBIC2434E
PBIC2413E

TIMING CHAIN
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INSTALLATION
NOTE:
The figure shows the relationship between the mating mark on each
timing chain and that on the corresponding sprocket, with the com-
ponents installed.
1. Make sure that crankshaft key points straight up.
2. Tighten mounting bolts in numerical order as shown in figure
with the following procedure, and install balancer unit.
CAUTION:
If mounting bolts are re-used, check their outer diameter
before installation. Refer to EM-48, "
INSPECTION AFTER
REMOVAL" .
a. Apply new engine oil to threads and seat surfaces of mounting
bolts.
b. Tighten all bolts.
c. Turn all bolts 90 degrees clockwise (angle tightening).
d. Completely loosen.
CAUTION:
In this step, loosen bolts in reverse order as shown in the
figure.
e. Tighten all bolts.
f. Turn them another 90 degrees clockwise (angle tightening).
CAUTION:
Check tightening angle with an angle wrench (special service tool) or a protractor. Do not make
judgment by visual check alone.
PBIC2182E
: 48.1 N·m (4.9 kg-m, 35 ft-lb)KBIA0122E
: 0 N·m (0 kg-m, 0 ft-lb)
: 48.1 N·m (4.9 kg-m, 35 ft-lb)
KBIA0080E

EM-50
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TIMING CHAIN

3. Install crankshaft sprocket and balancer unit timing chain.

Make sure that crankshaft sprocket is positioned with mating
marks on cylinder block and crankshaft sprocket meeting at
the top.

Install it by aligning mating marks on each sprocket and bal-
ancer unit timing chain.
4. Install balancer unit timing chain tensioner.
NOTE:
Chain guide and tensioner move freely with the staking pin as
the axle. Therefore, bolt hole position of the three points could
be changed during removal. If points change, temporarily fix the
two mounting bolts on chain guide, and move tensioner to mate
the bolt holes.

Be careful not to let mating marks of each sprocket and timing
chain slip.

After installation, make sure the mating marks have not
slipped, then remove stopper pin and release tensioner
sleeve.
5. Install timing chain and related parts.

Install by aligning mating marks on each sprocket and timing
chain.

Before and after installing chain tensioner, check again to
make sure that mating marks have not slipped.

After installing chain tensioner, remove stopper pin, and make
sure that tensioner moves freely.
CAUTION:

For the following note, after the mating marks are
aligned, keep them aligned by holding them with a
hand.

To avoid skipped teeth, do not rotate crankshaft and
camshaft until front cover is installed.
NOTE:
Before installing chain tensioner, it is possible to change the
position of mating mark on timing chain for that on each
sprocket for alignment.
6. Install front oil seal to front cover. Refer to EM-64, "
Removal and Installation of Front Oil Seal" .
7. Install front cover with the following procedure:
a. Install O-rings to cylinder head and cylinder block.
PBIC2183E
KBIA0124E
PBIC2182E

EM-52
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TIMING CHAIN

d. Apply a continuous bead of liquid gasket with a tube presser
(special service tool: WS39930000) to intake valve timing con-
trol cover as shown in the figure.
Use Genuine Liquid Gasket or equivalent.
e. Tighten mounting bolts in numerical order as shown in the fig-
ure.
10. Insert crankshaft pulley by aligning with crankshaft key.

When inserting crankshaft pulley with a plastic hammer, tap on its center portion (not circumference).
CAUTION:
Install protecting front oil seal lip section from any damage.
11. Tighten crankshaft pulley bolt.

Secure crankshaft pulley with a pulley holder (commercial service tool), and tighten crankshaft pulley
bolt.

Perform angle tightening with the following procedure:
a. Apply new engine oil to thread and seat surfaces of crankshaft pulley bolt.
b. Tighten crankshaft pulley bolt.
c. Put a paint mark on crankshaft pulley, mating with any one of six
easy to recognize angle marks on bolt flange.
d. Turn another 60 degrees clockwise (angle tightening).

Check the tightening angle with movement of one angle mark.
12. Install all removed parts in the reverse order of removal.
SBIA0260E
KBIA0085E
: 42.1 N·m (4.3 kg-m, 31 ft-lb)
SEM751G