2003 NISSAN X-TRAIL engine coolant

EM-2
INSPECTION AFTER REMOVAL ........................ 38
Valve Clearance ...................................................... 40
INSPECTION ....................................................... 40
ADJUSTMENT .................................................... 41
TIMING CHAIN .......................................................... 43
Removal and Installation ........................................ 43
REMOVAL ........................................................... 44
INSPECTION AFTER REMOVAL ........................ 47
INSTALLATION .................................................... 48
CYLINDER HEAD ..................................................... 52
On-Vehicle Service ................................................. 52
CHECKING COMPRESSION PRESSURE ......... 52
Removal and Installation ........................................ 53
REMOVAL ........................................................... 53
INSPECTION AFTER REMOVAL ........................ 54
INSTALLATION .................................................... 54
Disassembly and Assembly .................................... 55
DISASSEMBLY ................................................... 55
ASSEMBLY ......................................................... 56
Inspection After Disassembly ................................. 56
CYLINDER HEAD DISTORTION ........................ 56
VALVE DIMENSIONS .......................................... 57
VALVE GUIDE CLEARANCE .............................. 57
VALVE GUIDE REPLACEMENT ......................... 57
VALVE SEAT CONTACT ..................................... 58
VALVE SEAT REPLACEMENT ........................... 58
VALVE SPRING SQUARENESS ......................... 60
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD ............................... 60
ENGINE ASSEMBLY ................................................ 61
Removal and Installation ........................................ 61
REMOVAL ........................................................... 61
INSTALLATION .................................................... 63
INSPECTION AFTER INSTALLATION ................ 63
CYLINDER BLOCK ................................................... 64
Disassembly and Assembly .................................... 64
DISASSEMBLY ................................................... 65
ASSEMBLY ......................................................... 69
How to Select Piston and Bearing .......................... 73
DESCRIPTION .................................................... 73
HOW TO SELECT PISTON ................................. 74
HOW TO SELECT CONNCTING ROD BEARING... 74
HOW TO SELECT MAIN BEARING .................... 77
Inspection After Disassembly ................................. 80
CRANKSHAFT SIDE CLEARANCE .................... 80
CONNECTING ROD SIDE CLEARANCE ........... 81
PISTON AND PISTON PIN CLEARANCE .......... 81
PISTON RING SIDE CLEARANCE ..................... 82
PISTON RING END GAP .................................... 82
CONNECTING ROD BEND AND TORSION ....... 82
CONNECTING ROD BEARING (BIG END) ........ 83
CONNECTING ROD BUSHING OIL CLEAR-
ANCE (SMALL END) ........................................... 83
CYLINDER BLOCK DISTORTION ...................... 84
INNER DIAMETER OF MAIN BEARING HOUS-
ING ...................................................................... 85
PISTON TO CYLINDER BORE CLEARANCE .... 85
OUTER DIAMETER OF CRANKSHAFT JOUR-NAL ......................................................................86
OUTER DIAMETER OF CRANKSHAFT PIN ......86
OUT-OF-ROUND AND TAPER OF CRANK-
SHAFT .................................................................87
CRANKSHAFT RUNOUT ....................................87
OIL CLEARANCE OF CONNECTING ROD
BEARING .............................................................87
OIL CLEARANCE OF MAIN BEARING ...............88
CRUSH HEIGH OF MAIN BEARING ...................88
OUTER DIAMETER OF LOWER CYLINDER
BLOCK MOUNTING BOLT ..................................88
OUTER DIAMETER OF CONNECTING ROD
BOLT ....................................................................89
MOVEMENT AMOUNT OF FLYWHEEL (M/T
MODELS) .............................................................89
SERVICE DATA AND SPECIFICATIONS (SDS) ......90
Standard and Limit ..................................................90
GENERAL SPECIFICATIONS .............................90
INTAKE MANIFOLD AND EXHAUST MANI-
FOLD ...................................................................90
DRIVE BELTS ......................................................90
CYLINDER HEAD ................................................91
VALVE ..................................................................91
CAMSHAFT AND CAMSHAFT BEARING ...........94
CYLINDER BLOCK ..............................................94
PISTON, PISTON RING AND PISTON PIN ........95
CONNECTING ROD ............................................96
CRANKSHAFT .....................................................97
MAIN BEARING ...................................................98
CONNECTING ROD BEARING ...........................99
Tightening Torque ................................................. 100
YD22DDTi
PRECAUTIONS ....................................................... 102
Precautions for Drain Coolant ............................... 102
Precautions for Disconnecting Fuel Piping ........... 102
Precautions for Removal and Disassembly .......... 102
Precautions for Inspection, Repair and Replace-
ment ...................................................................... 102
Precautions for Assembly and Installation ............ 102
Parts Requiring Angular Tightening ...................... 102
Precautions for Liquid Gasket ............................... 103
REMOVAL OF LIQUID GASKET SEALING ...... 103
LIQUID GASKET APPLICATION PROCEDURE. 103
PREPARATION ....................................................... 104
Special Service Tools ............................................ 104
Commercial Service Tools .................................... 106
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ............................................ 108
NVH Troubleshooting —Engine Noise .................. 108
Use the Chart Below to Help You Find the Cause
of the Symptom. .................................................... 109
DRIVE BELTS ..........................................................110
Checking Drive Belts .............................................110
Tension Adjustment ...............................................110
AIR CONDITIONER COMPRESSOR BELT ...... 111

PRECAUTIONS
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[QR20DE]PRECAUTIONSPFP:00001
Precautions for Drain CoolantEBS009QD
lDrain coolant when engine is cooled.
Precautions for Disconnecting Fuel PipingEBS009QE
lBefore starting work, make sure no fire or spark producing items are in the work area.
lRelease fuel pressure before disassembly.
lAfter disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyEBS009QF
lWhen instructed to use special service tools, use the specified tools. Always be careful to work safely,
avoid forceful or uninstructed operations.
lExercise maximum care to avoid damage to mating or sliding surfaces.
lCover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.
lMark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.
lWhen 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 ReplacementEBS009QG
lBefore repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way,
and replace if necessary.
Precautions for Assembly and InstallationEBS009QH
lUse torque wrench to tighten bolts or nuts.
lWhen 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.
lReplace with new gasket, packing, oil seal or O-ring.
lThoroughly wash, clean, and air-blow each part. Carefully check oil or coolant passages for any restriction
and blockage.
lAvoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.
lRelease air within route after draining coolant.
lAfter repairing, start engine and increase engine speed to check coolant, fuel, oil, and exhaust systems
for leakage.
Parts Requiring Angular TighteningEBS009QI
lUse an angle wrench 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)
lDo not use a torque value for final tightening.
lThe torque value for these parts are for a preliminary step.
lEnsure thread and seat surfaces are clean and coated with engine oil.

EM-6
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PRECAUTIONS
Precautions for Liquid Gasket
EBS009QJ
REMOVAL OF LIQUID GASKET SEALING
lAfter removing the mounting bolts and nuts, disconnect and
remove the liquid gasket sealing using a seal cutter.
CAUTION:
Be careful not to damage the mating surfaces.
lIn areas where the cutter is difficult to use, use a plastic hammer
to lightly tap the areas where the liquid gasket is applied.
CAUTION:
If for some unavoidable reason a tool such as a flat-bladed
screwdriver is used, be careful not to damage the mating sur-
faces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using a scraper, remove the old liquid gasket adhering to the
gasket application surface and the mating surface.
lRemove the liquid gasket completely from the groove of the gas-
ket application surface, mounting bolts, and bolt holes.
2. Wipe the gasket application surface and the mating surface with
white gasoline (lighting and heating use) to remove adhering
moisture, grease and foreign materials.
3. Attach the liquid gasket to the tube presser.
Use Genuine Liquid Gasket or equivalent.
4. Apply the gasket without breaks to the specified location with the
specified dimensions.
lIf there is a groove for the liquid gasket application, apply the
gasket to the groove.
lAs for the bolt holes, normally apply the gasket inside the holes.
If specified, it should be applied outside the holes. Make sure to
read the text of service manual.
lWithin five minutes of gasket application, install the mating com-
ponent.
lIf the liquid gasket protrudes, wipe it off immediately.
lDo not retighten after the installation.
lAfter 30 minutes or more have passed from the installation, fill
the engine oil and coolant.
CAUTION:
If there are specific instructions in the service manual, observe
them.
PBIC0275E
PBIC0003E
EMA0622D
SEM164F

INTAKE MANIFOLD
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INTAKE MANIFOLDPFP:14003
Removal and InstallationEBS009QT
REMOVAL
WA RN ING:
To avoid the danger of being scalded, never drain the coolant when the engine is hot.
1. Remove mass air flow sensor harness connector from mass air flow sensor and clamp.
2. Release fuel pressure.
Refer toEC-34, "
FUEL PRESSURE RELEASE"(WITH EURO-OBD),EC-399, "FUEL PRESSURE
RELEASE"(WITHOUT EURO-OBD).
3. Remove air cleaner case and air duct assembly.
Refer toEM-15, "
Removal and Installation".
4. Drain coolant when engine is cooled. Refer toCO-9, "
DRAINING ENGINE COOLANT".
KBIA0232E
1 Bracket 2 PCV hose 3 Intake manifold collector
4 Gasket 5 Electric throttle control actuator 6 Intake manifold support
7EVAP canister purge volume control
solenoid valve8 Vacuum hose 9 Intake manifold

EM-44
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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.
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KBIA0190E

CYLINDER HEAD
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lIf some cylinders have low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, the piston rings may be worn out or damaged. Check
the piston rings and replace if necessary.
–If the compression pressure remains at low level despite the addition of engine oil, the valves may be mal-
functioning. Check the valves for damage. Replace the valve or valve seat accordingly.
lIf two adjacent cylinders have respectively low compression pressure and their compression remains low
even after the addition of engine oil, the gaskets are leaking. In such a case, replace the cylinder head
gaskets.
8. Install spark plug, ignition coil and harness connectors.
Removal and InstallationEBS009R4
REMOVAL
1. Release fuel pressure. Refer toEC-34, "FUEL PRESSURE RELEASE"(WITH EURO-OBD),EC-399,
"FUEL PRESSURE RELEASE"(WITHOUT EURO-OBD).
2. Drain engine coolant and engine oil.
3. Remove the following components and related parts.
lEngine hood and engine under cover.
lAir cleaner case and air duct assembly; Refer toEM-15, "Removal and Installation".
lIgnition coils; Refer toEM-27, "Removal and Installation".
lRocker cover; Refer toEM-31, "Removal and Installation".
lEngine Coolant reservoir tank
lAuxiliary drive belt; Refer toEM-14, "Removal and Installation of Auxiliary Drive Belt Auto- tensioner".
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".
lExhaust manifold; Refer toEM-22, "Removal and Installation".
lIntake manifold collector, intake manifold and fuel tube assembly; Refer toEM-17, "Removal and Installa-
tion".
lWater control valve and housing; Refer toCO-21, "THERMOSTAT AND WATER CONTROL VALVE".
4. Remove front cover and timing chain. Refer toEM-43, "
Removal and Installation".
KBIA0250E
1 Cylinder head assembly 2 Cylinder head gasket 3 Cylinder head bolt

ENGINE ASSEMBLY
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ENGINE ASSEMBLYPFP:10001
Removal and InstallationEBS009R7
WA RN ING:
lSituate vehicle on a flat and solid surface.
lPlace chocks at front and back of rear wheels.
lFor engines not equipped with engine slingers, attach proper slingers and bolts described in
PA R T S C ATA L O G.
CAUTION:
lAlways be careful to work safely, avoid forceful or uninstructed operations.
lDo not start working until exhaust system and coolant are cool enough.
lIf items or work required are not covered by the engine main body section, refer to the applicable
sections.
lAlways use the support point specified for lifting.
lUseeither2-polelifttypeorseparatetypeliftasbestyoucan.Ifboard-ontypeisusedfor
unavoidable reasons, support at the rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.
lFor supporting points for lifting and jacking point at rear axle, refer toGI-37, "Garage Jack and
Safety Stand".
REMOVAL
Description of work
Remove engine, transaxle and transfer assembly with front suspension member from vehicle down ward.
Separate suspension member, and then separate engine and transaxle.
Preparation
KBIA0254E
1 Rear engine mounting insulator 2 Rear engine mounting bracket 3 RH engine mounting insulator
4 RH engine mounting bracket 5 Front engine mounting bracket 6 Front engine mounting insulator
7 Center member 8 LH engine mounting insulator 9 LH engine mounting bracket

EM-62
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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)
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