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![NISSAN X-TRAIL 2003 Electronic Repair Manual CAMSHAFT
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NOTICE:
Inner diameter of camshaft bracket is manufactured together with cylinder head. Replace the whole cylinder
head assembly.
Camshaft End Play
lI NISSAN X-TRAIL 2003 Electronic Repair Manual CAMSHAFT
EM-39
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NOTICE:
Inner diameter of camshaft bracket is manufactured together with cylinder head. Replace the whole cylinder
head assembly.
Camshaft End Play
lI](/manual-img/5/57402/w960_57402-2008.png)
CAMSHAFT
EM-39
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NOTICE:
Inner diameter of camshaft bracket is manufactured together with cylinder head. Replace the whole cylinder
head assembly.
Camshaft End Play
lInstall dial gauge in thrust direction on front end of camshaft.
Measure end play of dial gauge when camshaft is moved for-
ward/backward (in direction to axis).
lWhen out of the specified range, replace with new camshaft and
measure again.
lWhen out of the specified range again, replace with new cylinder
head.
Camshaft Sprocket Runout
1. Install camshaft in cylinder head.
2. Install camshaft sprocket to camshaft.
3. Measure camshaft sprocket runout.
4. If it exceeds the limit, replace camshaft sprocket.
Valve Lifter
lCheck if surface of valve lifter has any wear or cracks.
Valve Lifter Clearance
OuterDiameterofValveLifter
lMeasure outer diameter of valve lifter.Standard:
0.115 - 0.188 mm (0.0045 - 0.0074 in)
PBIC0042E
Runout : Less than 0.15 mm (0.0059 in)
KBIA0181J
KBIA0182E
Valve lifter outer diameter: 33.965 - 33.980mm (1.3372 -
1.3378 in)
SEM961E
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![NISSAN X-TRAIL 2003 Electronic Repair Manual EM-40
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CAMSHAFT
ValveLifterHoleDiameter
lUsing inside micrometer, measure diameter of valve lifter hole of
cylinder head.
Calculation of Valve Lifter Clearance
(Valve lifter clearance) = (hole NISSAN X-TRAIL 2003 Electronic Repair Manual EM-40
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CAMSHAFT
ValveLifterHoleDiameter
lUsing inside micrometer, measure diameter of valve lifter hole of
cylinder head.
Calculation of Valve Lifter Clearance
(Valve lifter clearance) = (hole](/manual-img/5/57402/w960_57402-2009.png)
EM-40
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CAMSHAFT
ValveLifterHoleDiameter
lUsing inside micrometer, measure diameter of valve lifter hole of
cylinder head.
Calculation of Valve Lifter Clearance
(Valve lifter clearance) = (hole diameter of valve lifter) – (outer diam-
eter of valve lifter).
lWhen out of specified range, referring to each specification of outer and inner diameter, replace either or
both valve lifter and cylinder head.
Valve ClearanceEBS009R1
INSPECTION
lPerform inspection as follows after removal, installation or replacement of camshaft or valve-related parts,
or if there is unusual engine conditions due to changes in valve clearance over time (starting, idling, and/
or noise).
1. Warm up engine. Then stop it.
2. Remove front RH engine side cover.
3. Remove rocker cover.
Refer toEM-31, "
Removal and Installation".
4. Turn crankshaft pulley in normal direction (clockwise when
viewed from front) to align TDC identification notch (without
paint mark) with timing indicator.
5. At this time, check that the both intake and exhaust cam noses
of No. 1 cylinder face outside.
lIf they do not face outside, turn crankshaft pulley once more. Standard:
34.000 - 34.021 mm (1.3386 - 1.3394 in)
Standard:
0.020 - 0.056 mm (0.0008 - 0.0022 in)
PBIC0043E
KBIA0190E
KBIA0400J
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![NISSAN X-TRAIL 2003 Electronic Repair Manual CAMSHAFT
EM-41
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6. By referring to the figure, measure valve clearances at locations
marked X as shown in the table below (locations indicated with
black arrow in fig NISSAN X-TRAIL 2003 Electronic Repair Manual CAMSHAFT
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6. By referring to the figure, measure valve clearances at locations
marked X as shown in the table below (locations indicated with
black arrow in fig](/manual-img/5/57402/w960_57402-2010.png)
CAMSHAFT
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6. By referring to the figure, measure valve clearances at locations
marked X as shown in the table below (locations indicated with
black arrow in figure) with a feeler gauge.
lNo.1 cylinder compression TDC.
lUse a feeler gauge, measure clearance between valve and camshaft.
*Reference data at approximately 20°C(68°F)
CAUTION:
If inspection was carried out with cold engine, check that values with fully warmed up engine are still
within specifications.
7. Turn crankshaft one revolution (360°) and align mark on crankshaft pulley with pointer.
8. By referring to the figure, measure valve clearances at locations
marked X as shown in the table below (locations indicated with
black arrow in figure).
lNo.4 cylinder compression TDC.
9. If out of specifications, adjust as follows.
ADJUSTMENT
lPerform adjustment depending on selected head thickness of valve lifter.
lThe specified valve lifter thickness is the dimension at normal temperatures. Ignore dimensional differ-
ences caused by temperature. Use the specifications for hot engine condition to adjust.
1. Remove camshaft. Refer toEM-33, "
Removal and Installation".
2. Remove the valve lifters at the locations that are outside the standard.
KBIA0248E
Cylinder No.1 No.2 No.3 No.4
Valve INT EXH INT EXH INT EXH INT EXH
Measurable´´´x
KBIA0185E
Valve clearance standard:
Hot Intake : 0.32 - 0.40 mm (0.013 - 0.016 in)
Exhaust : 0.33- 0.41 mm (0.013 - 0.016 in)
Cold* Intake : 0.24 - 0.32 mm (0.009- 0.013 in)
Exhaust : 0.26- 0.34 mm (0.010 - 0.013 in)
Cylinder No.1 No.2 No.3 No.4
Valve INT EXH INT EXH INT EXH INT EXH
Measurable x´x´
KBIA0249E
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![NISSAN X-TRAIL 2003 Electronic Repair Manual EM-42
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CAMSHAFT
3. Measure the center thickness of the removed valve lifters with a
micrometer.
4. Use the equation below to calculate valve lifter thickness for replacement.
lValve lifter thi NISSAN X-TRAIL 2003 Electronic Repair Manual EM-42
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CAMSHAFT
3. Measure the center thickness of the removed valve lifters with a
micrometer.
4. Use the equation below to calculate valve lifter thickness for replacement.
lValve lifter thi](/manual-img/5/57402/w960_57402-2011.png)
EM-42
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CAMSHAFT
3. Measure the center thickness of the removed valve lifters with a
micrometer.
4. Use the equation below to calculate valve lifter thickness for replacement.
lValve lifter thickness calculation.
Thickness of replacement valve lifter = t1+ ( C1 — C2 )
t1 = Thickness of removed valve lifter.
C1 = Measured valve clearance.
C2=Standard valve clearance.
lThickness of a new valve lifter can be identified by stamp
marks on the reverse side (inside the cylinder).
Stamp mark 696 indicates 6.96mm (0.2740in) in thickness.
Available thickness of valve lifter: 26 sizes with range 6.96 to 7.46 mm (0.2740 to 0.2937 in) in steps of
0.02 mm (0.0008 in) (when manufactured at factory).
5. Install the selected valve lifter.
6. Install camshaft.
7. Manually turn crankshaft pulley a few turns.
8. Check that valve clearances for cold engine are within specifications by referring to the specified values.
9. After completing the repair, check valve clearances again with the specifications for warmed engine. Make
sure the values are within specifications.
Valve clearance:
Unit: mm (in)
*: Approximately 20°C(68°F)
KBIA0057E
Intake : 0.36 mm (0.0142 in)
Exhaust : 0.37 mm (0.0146 in)
KBIA0119E
Cold* (reference data) Hot
Intake 0.24 - 0.32 (0.009 - 0.013) 0.32 - 0.40 (0.013 - 0.016)
Exhaust 0.26 - 0.34( 0.010 - 0.013) 0.33 - 0.41 (0.013 - 0.016)
Page 2013 of 3066
TIMING CHAIN
EM-43
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TIMING CHAINPFP:13028
Removal and InstallationEBS009R2
KBIA0120E
1 Oil rings 2 Camshaft sprocket (INT) 3 Camshaft sprocket (EXH)
4 Chain tensioner 5 Spring 6 Chain tensioner plunger
7 Timing chain slack guide 8 Timing chain 9 Front cover
10 Chain guide 11Intake valve timing control solenoid
valve12 Intake valve timing control cover
13 Engine mounting bracket 14 Crankshaft pulley bolt 15 Crankshaft pulley
16 Front oil seal 17 Balancer unit timing chain tensioner 18 Oil pump drive spacer
19 Crankshaft sprocket 20 Timing chain tension guide 21 Balancer unit timing chain
22 Balancer unit
Page 2014 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual 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 co NISSAN X-TRAIL 2003 Electronic Repair Manual 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 co](/manual-img/5/57402/w960_57402-2013.png)
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.
KBIA0085E
KBIA0190E
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TIMING CHAIN
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b. At the same time, make sure that the mating marks on camshaft
sprockets are located as shown in the figure.
lIf not, rotate crankshaft pulley one more turn to line up mating
marks to the positions in the figure.
14. Remove crankshaft pulley with the following procedure.
a. Fix crankshaft pulley with a pulley holder, loosen crankshaft pul-
ley mounting bolts, and pull the pulley out by 10mm (0.3937in).
b. Attach a pulley puller in the M 6 (0.24 in dia) thread hole on
crankshaft pulley, and remove crankshaft pulley.
KBIA0115E
KBIA0077E
KBIA0078E
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EM-46
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TIMING CHAIN
15. Remove front cover with following procedure.
a. Loosen mounting bolts in the reverse order shown in the figure,
and remove them.
b. Using a seal cutter, remove front cover.
CAUTION:
lBe careful not to damage mounting surface.
16. If front oil seal needs to be replaced, lift it with a screwdriver,
and remove it.
17. Remove timing chain with the following procedure.
a. Push in tensioner plunger. lnsert a stopper pin into hole on ten-
sioner body to fix chain tensioner and remove it.
lUse wire of 0.5mm (0.02in) in diameter as a stopper pin.
b. Secure hexagonal part of camshaft with a tool such as a span-
ner. Loosen camshaft sprocket mounting bolts and remove the
camshaft sprockets.
CAUTION:
lDo not rotate crankshaft or camshaft while timing chain
is removed. It causes interference between valve and pis-
ton.
18. Remove chain slack guide, tension guide, timing chain and oil
pump drive spacer.
KBIA0083E
KBIA0048E
KBIA0049E