2006 INFINITI FX35 exh

CAMSHAFT EM-221
[VK45DE]
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Revision: 2006 December 2006 FX35/FX45
4. Tighten camshaft bracket bolts in the following steps, in numeri- cal order as shown in the figure.
a. Tighten No. 9 to 12 in numerical order as shown.
b. Tighten No. 1 to 8 in numerical order as shown.
c. Tighten No. 13 to 14 in numerical order as shown. (Left bank only)
d. Tighten all bolts in numerical order as shown.
e. Tighten No. 1 to 12 in numerical order as shown.
f. Tighten No. 13 to 14 in numerical order as shown. (Left bank only)
CAUTION:
After tightening mounting bolts of camshaft brackets, be sure to wipe off excessive liquid gasket
from the parts listed below.

Mating surface of rocker cover

Mating surface of front cover
5. Install camshaft sprockets.

Install by checking with identification mark on surface.

Install camshaft sprocket (EXH) by selectively using the
groove of dowel pin according to the bank. (Common part
used for both banks.)

Lock the hexagonal part of camshaft in the same way as for
removal, and tighten mounting bolts.
6. Check and adjust the valve clearance. Refer to EM-222, "
Valve Clearance" .
7. Install in the reverse order of removal after this step.
INSPECTION AFTER INSTALLATION
Inspection of Camshaft Sprocket (INT) Oil Groove
CAUTION:

Perform this inspection only when DTC P0011 and/or P0021 are detected in self-diagnostic results
of CONSULT-II and it is directed according to inspection procedure of EC section. Refer to EC-748,
"TROUBLE DIAGNOSIS" .

Check when the engine is cold so as to prevent burns from any splashing engine oil.
1. Check the engine oil level. Refer to LU-25, "
ENGINE OIL" .
2. Perform the following procedure so as to prevent the engine from being unintentionally started while checking.
a. Release fuel pressure. Refer to EC-746, "
FUEL PRESSURE RELEASE" .
b. Disconnect ignition coil and injector harness connectors.
3. Remove intake valve timing control solenoid valve. Refer to EM-203, "
TIMING CHAIN" .
: 1.96 N·m (0.2 kg-m, 1 ft-lb)
: 1.96 N·m (0.2 kg-m, 1 ft-lb)
: 1.96 N·m (0.2 kg-m, 1 ft-lb)
: 5.88 N·m (0.6 kg-m, 4 ft-lb)
: 10.41 N·m (1.1 kg-m, 8 ft-lb)
: 31.35 N·m (3.2 kg-m, 23 ft-lb)
PBIC0031E
PBIC2345E

EM-222
[VK45DE]
CAMSHAFT
Revision: 2006 December 2006 FX35/FX45
4. Crank the engine, and then make sure that engine oil comes out from intake valve timing control cover oil hole. End crank after
checking.
WARNING:
Be careful not to touch rotating parts (drive belt, idler pul-
ley, and crankshaft pulley, etc.).
CAUTION:
Engine oil may squirt from intake valve timing control sole-
noid valve installation hole during cranking. Use a shop
cloth to prevent the engine components and the vehicle. Do
not allow engine oil to get on rubber components such as
drive belt or engine mount insulators. Immediately wipe off
any splashed engine oil.

Clean oil groove between oil strainer and intake valve timing control solenoid valve if engine oil does not
come out from intake valve timing control cover oil hole. Refer to LU-23, "
LUBRICATION SYSTEM" .
5. Remove components between intake valve timing control solenoid valve and camshaft sprocket (INT), and then check each oil groove for clogging.

Clean oil groove if necessary. Refer to LU-23, "LUBRICATION SYSTEM" .
6. After inspection, install removed parts.
Valve ClearanceNBS003IF
INSPECTION
In cases of removing/installing or replacing camshaft and valve-related parts, or of unusual engine conditions
due to changes in valve clearance (found malfunctions during starting, idling or causing noise), perform
inspection as follows:
1. Remove rocker covers (right and left bank). Refer to EM-200, "
ROCKER COVER" .
2. Measure the valve clearance as follows:
a. Set No. 1 cylinder at TDC of its compression stroke.

Rotate crankshaft pulley in clockwise to align TDC identifica-
tion notch (without paint mark) with timing indicator on front
cover.

Make sure that both intake and exhaust cam noses of No. 1
cylinder (engine front side of left bank) are located as shown
in the figure.

If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
PBIC2848E
PBIC2341E
KBIA0400J

CAMSHAFT EM-223
[VK45DE]
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Revision: 2006 December 2006 FX35/FX45
b. Use feeler gauge, measure the clearance between valve lifter and camshaft.
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 figure).
NOTE:
Firing order 1-8-7-3-6-5-4-2

No.1 cylinder at compression TDC
c. Rotate crankshaft pulley clockwise (when view from engine front) by 270 degrees from the position of No. 1 cylinder com-
pression TDC to align No. 3 cylinder at TDC of its compression
stroke.
NOTE:
Crankshaft pulley mounting bolt flange has a angle mark every
90 degrees. They can be used as a guide to rotation angle.
SEM139D
Cold Hot * (reference data)
Intake 0.26 - 0.34 (0.010 - 0.013) 0.304 - 0.416 (0.012 - 0.016)
Exhaust 0.29 - 0.37 (0.011 - 0.015) 0.308 - 0.432 (0.012 - 0.017)
Measuring position (right bank) No. 2
CYL. No. 4
CYL. No. 6
CYL. No. 8
CYL.
No. 1 cylinder at
compression TDC EXH
×
INT ××
Measuring position (left bank) No. 1
CYL. No. 3
CYL. No. 5
CYL. No. 7
CYL.
No. 1 cylinder at
compression TDC INT
××
EXH ××
PBIC2358E
PBIC2346E

EM-224
[VK45DE]
CAMSHAFT
Revision: 2006 December 2006 FX35/FX45

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

No. 3 cylinder at compression TDC
d. Rotate crankshaft pulley clockwise (when view from engine front) by 90 degrees from the position of No. 3 cylinder compres-
sion TDC to align No. 6 cylinder at TDC of its compression
stroke.

By referring to the figure, measure the valve clearances at
locations marked “ ×” as shown in the table below.

No. 6 cylinder at compression TDC
3. For the measured value are out of the standard, perform adjustment. Refer to EM-224, "
ADJUSTMENT" .
ADJUSTMENT
NOTE:
Adjust valve clearance while engine is cold.
1. Thoroughly wipe off engine oil around adjusting shim using rag.
2. Rotate crankshaft to position cam nose on camshaft of valve that must be adjusted upward.
Measuring position (right bank) No. 2
CYL. No. 4
CYL. No. 6
CYL. No. 8
CYL.
No. 3 cylinder at
compression TDC EXH
×
INT ×
Measuring position (left bank) No. 1
CYL. No. 3
CYL. No. 5
CYL. No. 7
CYL.
No. 3 cylinder at
compression TDC INT
××
EXH ××
PBIC2358E
PBIC2346E
Measuring position (right bank) No. 2
CYL. No. 4
CYL. No. 6
CYL. No. 8
CYL.
No. 6 cylinder at
compression TDC EXH
× ×
INT ×
PBIC0824E

CAMSHAFT EM-225
[VK45DE]
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Revision: 2006 December 2006 FX35/FX45
3. Using small screwdriver, turn the round hole of adjusting shim in the direction of the arrow.
CAUTION:
perform (the above procedure) during camshaft do not con-
tact with adjusting shim.
4. Install lifter stopper [SST: 10115120 (J38972-2)] as follows:
a. Except exhaust side of No. 7 and 8 cylinder;
i. Place camshaft pliers (SST) around camshaft as shown in the figure.
ii. Rotate camshaft pliers so that valve lifter is pushed down. CAUTION:
Be careful not to damage cam surface, valve lifter and cylin-
der head with camshaft pliers.
iii. Place lifter stopper between camshaft and the edge of valve lifter to retain valve lifter.
CAUTION:

Lifter stopper must be placed as close to camshaft
bracket as possible.

Be careful not to damage cam surface, valve lifter and
cylinder head with lifter stopper.
iv. Remove camshaft pliers. CAUTION:
Camshaft pliers should be removed by rotating it slowly
because lifter stopper hits and damages journal portion by
rotating camshaft pliers quickly.
b. Exhaust side of No. 7 and 8 cylinder;
NOTE:
Exhaust side of No. 7 and 8 cylinder does not have space for installing camshaft pliers [SST: KV10115110
(J38972-1)]. therefore, install lifter stopper [SST: KV10115120 (J38972-2)] according to the following
instructions.
i. Rotate crankshaft to press cam nose to the adjusting part of valve lifter.
ii. Place lifter stopper between camshaft and the edge of valve lifter to retain valve lifter.
CAUTION:

Lifter stopper must be placed as close to camshaft bracket as possible.

Be careful not to damage cam surface, valve lifter and cylinder head with lifter stopper.
iii. Rotate crankshaft slowly 180 degrees clockwise. CAUTION:
Rotating crankshaft slowly because lifter stopper hits and damages journal portion by rotating
crankshaft quickly.
PBIC0047E
PBIC2276E
PBIC1565E

EM-226
[VK45DE]
CAMSHAFT
Revision: 2006 December 2006 FX35/FX45
5. Blow air into the round hole to separate adjusting shim from valve lifter.
CAUTION:
When blowing, use goggles to protect your eye.
6. Remove adjusting shim with magnetic hand.
7. Use the equation below to calculate adjusting shim thickness for replacement.

Using micrometer determine thickness of removed shim with
measured at center.

Calculate thickness of new adjusting shim so valve clearance comes within specified values.
Shims are available in 64 sizes from 2.32 mm (0.0913 in) to 2.95 mm (0.1161 in) in steps of 0.01
mm (0.0004 in). Refer to EM-277, "
Available Adjusting Shims" .
PBIC1566E
PBIC2359E
SEM145D
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 : 0.30 mm (0.012 in)
Exhaust : 0.33 mm (0.013 in)

CAMSHAFT EM-227
[VK45DE]
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Revision: 2006 December 2006 FX35/FX45

Thickness of new adjusting shim can be identified by stamp
marks on the reverse side (inside the cylinder).
8. Install new adjusting shim using suitable tool.

Install with the surface on which the thickness is
stamped facing down.
9. Remove lifter stopper as follows:
a. Except exhaust side of No. 7 and 8 cylinder;
i. Perform same procedure for removal, place camshaft pliers (SST).
ii. Remove lifter stopper (SST).
iii. Remove camshaft pliers.
b. Exhaust side of No. 7 and 8 cylinder.

Rotate crankshaft slowly 180 degrees clockwise. then remove lifter stopper.
10. Manually turn crankshaft pulley a few turns.
11. Make sure that the valve clearance is within the standard. Refer to EM-222, "
INSPECTION" .
12. Install all removed parts in the reverse order of removal. Refer to EM-219, "
INSTALLATION" .
13. Warm up the engine, and check for unusual noise and vibration.
SEM873E
PBIC1568E
PBIC1569E

CYLINDER HEAD EM-233
[VK45DE]
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Revision: 2006 December 2006 FX35/FX45

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, 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, valves may be mal-
functioning. Check valves for damage. Replace 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, cylinder head gaskets are leaking. In such a case, replace cyl-
inder head gaskets.
8. After inspection is completed, install removed parts in the reverse order of removal.
9. Start engine, and make sure that engine runs smoothly.
10. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-748, "
TROUBLE DIAGNOSIS" .
ComponentsNBS003IK
Removal and InstallationNBS003IL
REMOVAL
1. Remove engine assembly from vehicle. Refer to EM-243, "ENGINE ASSEMBLY" .
2. Remove exhaust manifold. Refer to EM-183, "
EXHAUST MANIFOLD AND THREE WAY CATALYST" .
3. Remove camshaft. Refer to EM-215, "
CAMSHAFT" .
1. Engine coolant temperature sensor 2. Washer 3. Cylinder head gasket (left bank)
4. Harness bracket 5. Cylinder head (right bank) 6. Cylinder head bolt
7. Cylinder head gasket (right bank) 8. Cylinder head bolt 9. Cylinder head (left bank)
PBIC2756E