NISSAN X-TRAIL 2001 Service Repair Manual

CYLINDER HEAD
EM-61
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●Intake manifold collector, intake manifold and fuel tube assembly; Refer to EM-16, "INTAKE MANI-
FOLD" .
●Water control valve and housing; Refer to CO-20, "THERMOSTAT AND WATER CONTROL VALVE" .
4. Remove front cover and timing chain. Refer to EM-37, "
TIMING CHAIN" .
5. Remove camshaft. Refer to EM-46, "
CAMSHAFT" .
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
Outer Diameter of Cylinder Head Bolts
●Cylinder 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.
●If 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:
●If cylinder head bolts are re-used, check their outer diam-
eters before installation. Refer to EM-61, "
Outer Diameter
of Cylinder Head Bolts" .
●In step “c”, loosen bolts in the reverse order of that indi-
cated in figure.
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 4.5 kg-m, 26 to 32 ft-lb).
e. Turn all bolts 75° to 80° (target: 75°) degrees clockwise.
KBIA0058E
Limit (d1 – d2): More than 0.23 mm (0.0091 in).
SBIA0269E
KBIA0058E

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CYLINDER HEAD
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.
3. Install followings in reverse order of removal.
Disassembly and AssemblyEBS00KNR
CAUTION:
●When installing camshafts, chain tensioners, oil seals or other sliding parts, lubricate contacting
surface with new engine oil.
●Apply new engine oil to threads and seat surface when installing cylinder head, camshaft
sprocket, crankshaft pulley and camshaft bracket.
●Attach tags to valve lifters so as not to mix them up.
KBIA0059E
SBIA0251E
1. Valve Collet 2. Valve spring retainer 3. Valve spring (with valve spring seat)
4. Valve oil seal 5. Valve guide 6. Cylinder head
7. Valve seat (INT) 8. Valve (INT) 9. Valve (EXH)
10. Valve seat (EXH) 11. Spark plug 12. Spark plug tube

CYLINDER HEAD
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DISASSEMBLY
1. Remove spark plug with spark plug wrench.
2. Remove spark plug tube, if necessary.
●Using pliers, remove it from cylinder head.
CAUTION:
●Be careful not to damage cylinder head.
●Do not remove spark plug tube if not necessary. Once remove, the spark plug tube cannot be
reused because of deformation.
3. Remove valve lifter.
●Confirm installation point.
4. Remove valve collet.
●Compress valve spring with valve spring compressor.
Remove valve collet with magnet driver.
5. Remove valve spring retainer and valve spring.
CAUTION:
Do not remove valve spring seat from valve spring.
6. Push valve stem to combustion chamber side, and remove
valve.
●Inspect valve guide clearance before removal. Refer to EM-
65, "VALVE GUIDE CLEARANCE" .
●Confirm installation point.
7. Remove valve oil seal with valve oil seal puller.
8. When valve seat must be replaced, refer to EM-66, "
VA LV E
SEAT REPLACEMENT" to removal.
9. When valve guide must be replaced, refer to EM-65, "
VA LV E
GUIDE REPLACEMENT" to removal.
ASSEMBLY
1. Install valve guide. Refer to EM-65, "VALVE GUIDE REPLACEMENT" .
2. Install valve seat. Refer to EM-66, "
VALVE SEAT REPLACEMENT" .
3. Install valve oil seal.
●Install with valve oil seal drift to match dimension in illustra-
tion.
4. Install valve.
●Install larger diameter to intake side.
PBIC0277E
SEM093F
SBIA0270E

EM-64
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CYLINDER HEAD
5. Install valve spring.
●Install smaller pitch (valve spring seat side) to cylinder head
side.
●Confirm identification color of valve spring.
6. Install valve spring retainer.
7. Install valve collet.
●Compress valve spring with valve spring compressor. Install
valve collet with magnet hand.
●Tap stem edge lightly with plastic hammer after installation to check its installed condition.
8. Install valve lifter.
9. Install spark plug tube.
●Press fit it into cylinder head as follows.
a. Remove old liquid gasket from cylinder head side mounting
hole.
b. Apply liquid gasket all round on spark plug tube with a 12 mm
(0.47 in) width from edge of spark plug tube on the press fit side.
Use Genuine Liquid gasket or equivalent.
c. Using a drift (commercial service tool), press fit spark plug tube
so that height is as same as H shown in figure.
CAUTION:
●When press fitting be careful not to deform spark plug tube.
●After press fitting, wipe off any protruding liquid gasket on top surface of cylinder head.
10. Install spark plug with spark plug wrench.
Inspection After DisassemblyEBS00KNS
CYLINDER HEAD DISTORTION
1. Wipe off engine oil and remove water scale (like deposit), gas-
ket, sealer, carbon, etc with scraper.
CAUTION:
Use utmost care not to allow gasket debris to enter pas-
sages for engine oil or water.
2. At each of several locations on bottom surface of cylinder head,
measure distortion in six directions.
VALVE DIMENSIONS
Check dimensions of each valve. For dimensions, refer to SDS, EM-
99, "Valve Dimensions" . Intake : Blue
Exhaust : Yellow
Press fit height “H” standard value:
38.55 - 38.65 mm (1.518 - 1.522 in)
PBIC0525E
SBIA0252E
Standard: 0.1mm (0.004 in)
PBIC0075E
SEM188A

CYLINDER HEAD
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VALVE GUIDE CLEARANCE
Perform this inspection before removing valve guide.
1. Make sure that the valve stem diameter is within the specification.
2. Push the valve out by approx. 15 mm (0.59 in) toward the combustion chamber side to measure the
valve's run-out volume (in the direction of dial gauge) with dial gauge.
3. The half of the run-out volume accounts for the valve guide
clearance.
VALVE GUIDE REPLACEMENT
When valve guide is removed, replace with oversized [0.2 mm (0.008 in)] valve guide.
1. To remove valve guide, heat cylinder head to 110 to 130°C (230
to 266°F) by soaking in heated oil.
2. Drive out valve guide with a press [under a 20 kN (2 ton, 2.2 US
ton, 2.0 lmp ton) pressure] or hammer and suitable tool.
CAUTION:
Cylinder head contains heat, when working, wear protective
equipment to avoid getting burned.
3. Ream cylinder head valve guide hole.
4. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in
heated oil.Standard
Intake : 0.020 - 0.053 mm (0.0008 - 0.0021 in)
Exhaust : 0.030 - 0.063 mm (0.0012 - 0.0025 in)
PBIC0077E
SEM008A
SEM931C
Valve guide hole diameter (for service parts)
Intake and exhaust:
10.175 - 10.196 mm (0.4006 - 0.4014 in)
SEM932C

EM-66
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CYLINDER HEAD
5. Press valve guide from camshaft side to dimensions as in illus-
tration.
CAUTION:
Cylinder head contains heat, when working, wear protective
equipment to avoid getting burned.
6. Using valve guide reamer, apply reamer finish to valve guide.
VALVE SEAT CONTACT
●After confirming that the dimensions of valve guides and valves
are within specifications, perform this procedure.
●Apply prussian blue (or white lead) onto contacting surface of
valve seat to check the condition of the valve contact on the sur-
face.
●Check if the contact area band is continuous all around the cir-
cumference.
●If not, grind to adjust valve fitting and check again. If the contact-
ing surface still has NG conditions even after the re-check,
replace valve seat.
VALVE SEAT REPLACEMENT
When valve seat is removed, replace with oversized [0.5 mm (0.020 in)] valve seat.
1. Bore out old seat until it collapses. Boring should not continue beyond the bottom face of the seat recess
in cylinder head. Set the machine depth stop to ensure this.
2. Ream cylinder head recess diameter for service valve seat.
●Be sure to ream in circles concentric to the valve guide center.
This will enable valve seat to fit correctly.
PBIC0078E
Standard
Intake and exhaust:
6.000 - 6.018 mm (0.2362 - 0.2369 in)
SEM932C
SBIA0322E
Oversize [0.5 mm (0.020 in)]
Intake : 37.000 - 37.016 mm (1.4567 - 1.4573 in)
Exhaust : 32.000 - 32.016 mm (1.2598 - 1.2605 in)
SEM795A

CYLINDER HEAD
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3. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in
heated oil.
4. Provide valve seats cooled well with dry ice. Force fit valve seat
into cylinder head.
CAUTION:
●Avoid directly to touching cold valve seats.
●Cylinder head contains heat, when working, wear protec-
tive equipment to avoid getting burned.
5. Using valve seat cutter set or valve seat grinder, finish the seat
to the specified dimensions.
CAUTION:
When using valve seat cutter, firmly grip the cutter handle
with both hands. Then, press on the contacting surface all
around the circumference to cut in a single drive. Improper
pressure on with the cutter or cutting many different times
may result in stage valve seat.
●Grind to obtain the dimensions indicated in figure.
6. Using compound, grind to adjust valve fitting.
7. Check again for normal contact.
VALVE SPRING SQUARENESS
Set try square along the side of valve spring and rotate the spring.
Measure the maximum clearance between the top face of spring and
try square.
SEM008A
SEM934C
Standard
D1 dia. : 33.5 mm (1.3189 in)
D2 dia. : 35.1 - 35.3 mm (1.382 - 1.390 in)
D3 dia. : 39.0 - 39.2 mm (1.535 - 1.543 in)
D4 dia. : 28 mm (1.10 in)
D5 dia. : 29.9 - 30.1 mm (1.177 - 1.185 in)
D6 dia. : 33.5 - 33.7mm (1.319 - 1.327 in)
SBIA0226E
Limit: More than 1.9 mm (0.0748 in).
PBIC0080E

EM-68
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CYLINDER HEAD
VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD
Check valve spring pressure with valve spring seat installed at spec-
ified spring height.
CAUTION:
Do not remove valve spring seat.
SEM113
Standard: INTAKE EXHAUST
Free height : 44.84 - 45.34 mm (1.7654 -
1.7850 in): 45.28 - 45.78 mm (1.7827 -
1.8024 in)
Installation height : 35.30 mm (1.390 in) : 35.30 mm (1.390 in)
Installation load : 151 - 175 N (15.4 - 17.8 kg, 34 -
39 lb): 151 - 175 N (15.4 - 17.8 kg, 34 -
39 lb)
Height during valve open : 24.94 mm (0.9819 in) : 26.39 mm (1.0390 in)
Load with valve open : 358 - 408 N (36.5 - 41.6 kg, 80 -
92 lb): 325 - 371 N (33.1 - 37.8 kg, 73 -
83 lb)
Identification color : Blue : Yellow

ENGINE ASSEMBLY
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ENGINE ASSEMBLYPFP:10001
Removal and InstallationEBS00KNT
WARNING:
●Situate vehicle on a flat and solid surface.
●Place chocks at front and back of rear wheels.
●For engines not equipped with engine slingers, attach proper slingers and bolts described in
PARTS CATALOG.
CAUTION:
●Always be careful to work safely, avoid forceful or uninstructed operations.
●Do not start working until exhaust system and engine coolant are cool enough.
●If items or work required are not covered by the engine main body section, refer to the applicable
sections.
●Always use the support point specified for lifting.
●Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for
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.
●For supporting points for lifting and jacking point at rear axle, refer to GI-35, "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
PBIC1262E
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
10. Stopper 11. Grommet (2pcs)

EM-70
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ENGINE ASSEMBLY
1. Release fuel pressure. Refer to EC-775, "FUEL PRESSURE RELEASE" [QR20DE (WITH EURO-OBD)],
EC-1139, "
FUEL PRESSURE RELEASE" [QR20DE (WITHOUT EURO-OBD)], EC-42, "FUEL PRES-
SURE RELEASE" [QR25DE (WITH EURO-OBD)] or EC-452, "FUEL PRESSURE RELEASE" [QR25DE
(WITHOUT EURO-OBD)].
2. Remove engine hood.
3. Drain engine coolant from radiator drain plug. Refer to CO-9, "
DRAINING ENGINE COOLANT" .
4. Remove the following parts.
●LH/RH undercovers
●LH/RH front wheels
●Battery
●Drive belts; Refer to EM-12, "REMOVAL" .
●Air duct and air cleaner case assembly; Refer to EM-14, "REMOVAL" .
●Alternator
●Radiator and radiator fan assembly; Refer to CO-11, "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 to EM-16, "
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 suspensions from steering knuckle under strut.
Removal
21. Install engine slingers into front left of cylinder head and rear right of cylinder head.
●Use alternator bracket mounting bolt holes for the front side.
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)
SBIA0271E