2001 NISSAN X-TRAIL Service Repair Manual

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Page 105 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual CAMSHAFT
EM-55
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●Thickness of a new valve lifter can be identified by stamp
marks on the reverse side (inside the cylinder).
Stamp mark 696 indicates 6.96 mm

Page 106 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EM-56
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OIL SEAL
OIL SEAL
PFP:12279
Removal and Installation of Valve Oil SealEBS00KNM
REMOVAL
1. Remove camshaft. Refer to EM-46, "CAMSHAFT" .
2. Remove valve lifter. Refer to EM-46, "

Page 107 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual OIL SEAL
EM-57
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INSTALLATION
1. Apply new engine oil to new front oil seal joint surface and seal
lip.
2. Press in front oil seal to the position in the figure

Page 108 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EM-58
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OIL SEAL
●Press in rear oil seal to the position shown in the figure.
3. Install followings in the reverse order of removal.
●Install transaxle or automatic transaxle assembly. Re

Page 109 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual CYLINDER HEAD
EM-59
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CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00KNP
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure

Page 110 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EM-60
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CYLINDER HEAD
●If the engine speed is out of specified range, check battery liquid for proper gravity. Check engine
speed again with normal battery gravity.
●If compression

EM-60
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CYLINDER HEAD
●If the engine speed is out of specified range, check battery liquid for proper gravity. Check engine
speed again with normal battery gravity.
●If compression pressure is below minimum value, check valve clearances and parts associated with
combustion chamber (Valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). After the checking, measure compression pressure again.
●If 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
malfunctioning. Check the valves for damage. Replace the valve or valve seat accordingly.
●If 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 InstallationEBS00KNQ
REMOVAL
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. Drain engine coolant and engine oil.
3. Remove the following components and related parts.
●Engine hood and engine undercover.
●Air cleaner case and air duct assembly; Refer to EM-14, "AIR CLEANER AND AIR DUCT" .
●Ignition coils; Refer to EM-29, "IGNITION COIL" .
●Rocker cover; Refer to EM-35, "ROCKER COVER" .
●Engine coolant reservoir tank
●Drive belt; Refer to EM-12, "REMOVAL" .
●Alternator
●Drive belt auto-tensioner; Refer to EM-13, "REMOVAL" .
●Exhaust front tube; Refer to EX-2, "Removal and Installation" .
●Exhaust manifold; Refer to EM-24, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .
KBIA0250E
1. Cylinder head assembly 2. Cylinder head gasket 3. Cylinder head bolt

Page 111 of 3833

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 valv

Page 112 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EM-62
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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 j

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