2005 NISSAN X-TRAIL exhaust

TIMING CHAIN
EM-47
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Hood assembly; Refer to BL-12, "HOOD" .

RH and LH undercovers

PCV hose; Refer to EM-18, "INTAKE MANIFOLD" .

Ignition coil; Refer to EM-31, "IGNITION COIL" .

Rocker cover; Refer to EM-44, "ROCKER COVER" .

Engine coolant reservoir tank; Refer to CO-12, "RADIATOR" .

Drive belt; Refer to EM-13, "REMOVAL" .

Alternator; Refer to SC-13, "CHARGING SYSTEM" .

Drive belt auto-tensioner; Refer to EM-14, "REMOVAL" .

Exhaust front tube; Refer to EX-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. Remove power steering oil pump with piping connected, and secure it to vehicle side temporarily. Refer to
PS-37, "
HYDRAULIC LINE" .
5. Remove power steering reservoir tank from bracket to move power steering piping. Refer to PS-37,
"HYDRAULIC LINE" .
CAUTION:
To avoid power steering fluid leakage, temporarily fix power steering reservoir tank vertically.
6. 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.
7. Lift with hoist, and support the engine posture.
8. Remove RH engine mounting insulator and bracket. Refer to EM-81, "
ENGINE ASSEMBLY" .
9. Remove engine mounting related parts below. Refer to EM-81, "
Removal and Installation (2WD Models)"
(2WD models) or EM-85, "Removal and Installation (4WD Models)" (4WD models).

RH engine mounting insulator

Center member

Rear engine mounting bracket (2WD models)
10. Drain engine oil. Refer to LU-8, "
Changing Engine Oil" .
11. Remove oil pan (upper and lower), and oil strainer. Refer to EM-27, "
OIL PAN AND OIL STRAINER" .
12. Remove intake valve timing control cover.

Loosen bolts in reverse order as shown in the figure.

U s e a s e a l c u t t e r ( s p e c i a l s e r v i c e t o o l : K V 1 0 1111 0 0 ) o r e q u i v -
alent tool to cut liquid gasket for removal.
CAUTION:
Be careful not to damage mounting surface.
13. Pull chain guide between camshaft sprockets out through front cover.Slinger bolts:
Front
: 57.9 N·m (5.9 kg-m, 43 ft-lb)
Rear
: 28.0 N·m (2.9 kg-m, 21 ft-lb)
SBIA0271E
KBIA0085E

TIMING CHAIN
EM-55
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INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

CAMSHAFT
EM-59
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4. If out of the standard, replace camshaft.
Camshaft Cam Height
1. Measure the camshaft cam height with a micrometer.
2. If out of the standard, replace camshaft.
Camshaft Journal Oil Clearance
CAMSHAFT JOURNAL DIAMETER
Measure the outer diameter of camshaft journal with a micrometer.
CAMSHAFT BRACKET INNER DIAMETER

Tighten camshaft bracket bolts with specified torque. Refer to EM-61, "INSTALLATION" for the tightening
procedure.

Measure the inner diameter of camshaft bracket with an inside
micrometer.
CAMSHAFT JOURNAL OIL CLEARANCE

(Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter)

If out of the standard, replace either or both camshaft and cylinder head.
NOTE:
Camshaft bracket cannot be replaced as a single part, because it is machined together with cylinder head.
Replace whole cylinder head assembly.
Camshaft End Play
1. Install camshaft in cylinder head. Refer to EM-61, "INSTALLATION" for tightening procedure. Standard:
Intake
QR20DE : 45.015 - 45.205 mm (1.7722 - 1.7797 in)
QR25DE : 45.665 - 45.855 mm (1.7978 - 1.8053 in)
Exhaust
QR20DE : 42.825 - 43.015 mm (1.6860 - 1.6935 in)
QR25DE : 43.975 - 44.165 mm (1.7313 - 1.7388 in)
PBIC0039E
Standard:
No. 1 : 27.935 - 27.955 mm (1.0998 - 1.1006 in)
No. 2, 3, 4, 5 : 23.435 - 23.455 mm (0.9226 - 0.9234 in)
PBIC0040E
Standard:
No. 1 : 28.000 - 28.021 mm (1.1024 - 1.1032 in)
No. 2, 3, 4, 5 : 23.500 - 23.521 mm (0.9252 - 0.9260 in)
PBIC0041E
Standard: 0.045 - 0.086 mm (0.0018 - 0.0034 in)

CAMSHAFT
EM-61
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Measure the outer diameter of valve lifter with a micrometer.
VALVE LIFTER HOLE DIAMETER
Measure the diameter of valve lifter hole of cylinder head with an
inside micrometer.
VALVE LIFTER CLEARANCE

(Valve lifter clearance) = (Valve lifter hole diameter) – (Valve
lifter outer diameter)

If out of the standard, referring to the each standard of valve
lifter outer diameter and valve lifter hole diameter, replace either
or both valve lifter and cylinder head.
INSTALLATION
1. Install valve lifters.

Install them in the original positions.
2. Install camshafts.

Distinction between intake and exhaust camshafts is per-
formed with the different shapes of rear end.

Install camshafts so that camshaft dowel pins on the front side
are positioned as shown in the figure.
3. Install camshaft brackets with the following procedure:
a. Remove foreign material completely from camshaft bracket backside and from cylinder head installation
face.Standard: 33.965 - 33.980 mm (1.3372 - 1.3378 in)
JEM798G
Standard: 34.000 - 34.021 mm (1.3386 - 1.3394 in)
Standard: 0.020 - 0.056 mm (0.0008 - 0.0022 in)
PBIC0043E
Intake : Signal plate shape for camshaft position
sensor (PHASE)
Exhaust : Cone end shape
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EM-62
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CAMSHAFT

b. Install camshaft brackets (No. 2 to 5) aligning the identification
marks on upper surface as shown in the figure.
NOTE:
Install so that identification mark can be correctly read when
viewed from the exhaust side.
c. Install camshaft bracket (No. 1) with the following procedure:
i. Apply liquid gasket to camshaft bracket (No. 1) as shown in the
figure.
Use Genuine Liquid Gasket or equivalent.
CAUTION:
After installation, be sure to wipe off any excessive liquid
gasket leaking from part “A”.
ii. Apply liquid gasket to camshaft bracket (No. 1) contact surface
on the front cover backside.
Use Genuine Liquid Gasket or equivalent.

Apply liquid gasket to the outside of bolt hole on front cover.
iii. For camshaft bracket (No. 1) near installation position, and
install it without disturbing the liquid gasket applied to the sur-
faces.
SBIA0256E
PBIC2579E
SBIA0258E
PBIC2641E

EM-64
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CAMSHAFT

e. Tighten mounting bolts in numerical order as shown in the fig-
ure.
10. Inspect and adjust valve clearance. Refer to EM-64, "
Valve Clearance" .
11. Install in the reverse order of removal after this step.
Valve ClearanceEBS00LS3
INSPECTION
Perform inspection as follows after removal, installation or replacement of camshaft or valve-related parts, or if
there is unusual engine conditions regarding valve clearance.
1. Remove rocker cover. Refer to EM-44, "
ROCKER COVER" .
2. Open splash guard on RH undercover.
3. Measure the valve clearance with the following procedure:
a. Set No. 1 cylinder at TDC of its compression stroke.

Rotate crankshaft pulley clockwise and align TDC mark to
timing indicator on front cover.

At the same time, make sure that both intake and exhaust
cam noses of No. 1 cylinder face outside as shown in the fig-
ure.

If they do not face outside, rotate crankshaft pulley once more
(360 degrees) and align as shown in the figure.
b. Use a feeler gauge, measure the clearance between valve lifter
and camshaft.
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SEM139D

CAMSHAFT
EM-65
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Valve clearance:
Unit: mm (in)
*:Approximately 80°C (176°F)

By referring to the figure, measure the valve clearances at
locations marked “×” as shown in the table below (locations
indicated with black arrow in the figure) with a feeler gauge.

No. 1 cylinder compression TDC
c. Rotate crankshaft pulley one revolution (360 degrees) and align
TDC mark to timing indicator on front cover.

By referring to the figure, measure the valve clearance at
locations marked “×” as shown in the table below (locations
indicated with black arrow in the figure) with a feeler gauge.

No. 4 cylinder compression TDC
4. If out of standard, perform adjustment. Refer to EM-65, "
ADJUSTMENT" .
ADJUSTMENT

Perform adjustment depending on selected head thickness of valve lifter.
1. Remove camshaft. Refer to EM-56, "
REMOVAL" .
2. Remove valve lifters at the locations that are out of the standard.
Cold Hot * (reference data)
Intake 0.24 - 0.32 (0.009 - 0.013) 0.304 - 0.416 (0.012 - 0.016)
Exhaust 0.26 - 0.34 (0.010 - 0.013) 0.308 - 0.432 (0.012 - 0.017)
Measuring position No. 1 CYL. No. 2 CYL. No. 3 CYL. No. 4 CYL.
No. 1 cylinder at
compression TDCINT × ×
EXH × ×
PBIC2624E
KBIA0190E
Measuring position No. 1 CYL. No. 2 CYL. No. 3 CYL. No. 4 CYL.
No. 4 cylinder at
compression TDCINT × ×
EXH × ×
PBIC2625E

EM-66
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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.

Thickness of new valve lifter can be identified by stamp mark
on the reverse side (inside the cylinder).
Stamp mark “696” indicates 6.96 mm (0.2740 in) in thickness.
NOTE:
Available thickness of valve lifter: 26 sizes 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). Refer to EM-119, "
Available Valve Lifter" .
5. Install the selected valve lifter.
6. Install camshaft. Refer to EM-61, "
INSTALLATION" .
7. Manually rotate crankshaft pulley a few rotations.
8. Make sure that valve clearances for cold engine are within specifications by referring to the specified val-
ues. Refer to EM-64, "
INSPECTION" .
9. Install all removed parts in the reverse order of removal. Refer to EM-61, "
INSTALLATION" .
10. Warm up the engine, and check for unusual noise and vibration.
KBIA0057E
Valve lifter thickness calculation: t = t1 + (C1 – C2 )
t = Valve lifter thickness to be replaced
t
1 = Removed valve lifter thickness
C
1= Measured valve clearance
C
2= Standard valve clearance:
Intake : 0.28 mm (0.011 in)
Exhaust : 0.30 mm (0.012 in)
KBIA0119E