exh INFINITI FX35 2004 Service Manual

EM-198
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TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
5. Remove intake valve timing control cover as follows:
a. Loosen and remove mounting bolts in the reverse order as
shown in the figure.
b . U s e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ( J 3 7 2 2 8 ) ] o r e q u i v a l e n t t o o l
to cut liquid gasket for removal.
CAUTION:

Exercise care not to damage mating surfaces.

Pull out cover keeping levelness without an angle, as
inner part of cover is engaged with the center of camshaft
sprocket (INT).
6. Remove O-rings from front cover.
7. Obtain No. 1 cylinder at TDC of its compression stroke as follows:
a. Rotate crankshaft pulley clockwise to align the TDC identifica-
tion notch (without paint mark) with timing indicator on front
cover.
b. Make sure that both intake and exhaust cam noses of No. 1 cyl-
inder (engine front side of left bank) are located as shown in the
figure.

If not, turn crankshaft pulley one revolution (360 degrees) and
align as shown in the figure.
8. Remove crankshaft pulley as follows:
PBIC0051E
SBIA0374E
PBIC2341E
KBIA0400J

TIMING CHAIN
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Revision: 2004 November 2004 FX35/FX45
INSPECTION AFTER REMOVAL
Timing Chain
Check tor cracks and any excessive wear at the roller links and link
plates. Replace timing chain as necessary.
INSTALLATION
NOTE:

The above figure shows the relationship between the mating mark on each timing chain and that on the
corresponding sprocket, with the components installed.

Parts with an identification mark (R or L) should be installed on the corresponding bank according to the
mark.
Parts with an identification mark:
–Camshaft sprocket (INT)
–Dowel pin groove of camshaft sprocket (EXH) (camshaft sprocket is same part both banks)
–Chain tension guide
–Chain slack guide

Because of parallel manufacture, there are two types of mark (link colors) for timing chain.

To install timing chain and related parts, start with those on right bank. The procedure for installing parts
on left bank is omitted because it is the same as that for installation on right bank.
PBIC0282E
PBIC2344E

EM-202
[VK45DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
1. Make sure that crankshaft key and dowel pin of each camshaft
are located as shown in the figure. (No. 1 cylinder at compres-
sion TDC)
NOTE:
Though camshaft does not stop at the position as shown in the
figure, for the placement of cam nose, it is generally accepted
camshaft is placed for the same direction of the figure.
2. Install camshaft sprockets.

Install onto correct side 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 procedure
as for removal, and tighten mounting bolts.
3. Install crankshaft sprockets for both banks.

Install each crankshaft sprocket so that its flange side (the
larger diameter side without teeth) faces in the direction
shown in the figure.
NOTE:
The same parts are used but facing directions are different.Camshaft dowel pin
: At cylinder head upper face side in each bank
Crankshaft key
: At cylinder head side of left bank
SBIA0356E
PBIC2345E
PBIC0057E

TIMING CHAIN
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Revision: 2004 November 2004 FX35/FX45
f. Further tighten by 90 degrees. (Angle tightening)

Check the tightening angle by referencing to the notches. The
angle between two notches is 90 degrees.
15. Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns
smoothly.
16. Install in the reverse order of removal after this step.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in guide may gen-
erate a pounding noise during and just after engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.
INSPECTION AFTER INSTALLATION

Before starting engine, check the levels of engine coolant, lubrications and working fluid. If less than
required quantity, fill to the specified level.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of engine coolant, engine oil and working
fluid, fuel and exhaust gas.

Bleed air from passages in pipes and tubes of applicable lines, such as in cooling system.

After cooling down engine, again check amounts of engine coolant, engine oil and working fluid. Refill to
specified level, if necessary.
Summary of the inspection items:
PBIC2346E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Working fluid Level Leakage Level

EM-208
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CAMSHAFT
Revision: 2004 November 2004 FX35/FX45
CAMSHAFTPFP:13001
Removal and InstallationABS00FPG
REMOVAL
1. Remove engine assembly from vehicle. Refer to EM-236, "ENGINE ASSEMBLY" .
2. Remove timing chain. Refer to EM-196, "
TIMING CHAIN" .
3. With hexagonal part of camshaft locked with wrench, loosen
bolts securing camshaft sprocket to remove camshaft sprocket.
CAUTION:
After removing timing chain, do not turn crankshaft and
camshaft separately, or valves will strike the piston head.
1. Cylinder head (right bank) 2. Camshaft bracket (No. 2 to No. 5) 3. Adjusting shim
4. Valve lifter 5. Camshaft bracket (No. 1) 6. Seal washer
7. Camshaft (EXH) 8. Camshaft sprocket (EXH) 9. Camshaft sprocket (INT)
10. Camshaft (INT) 11. Cylinder head (left bank) 12. Adjusting shim
13. Valve lifter 14. Camshaft (INT) 15. Camshaft sprocket (INT)
16. Camshaft sprocket (EXH) 17. Camshaft (EXH) 18. Camshaft bracket (No. 1)
19. Seal washer 20. Camshaft bracket (No. 2 to No. 5) 21. Camshaft bracket (No. 6)
22. Harness bracket 23. Harness bracket
PBIC2354E
PBIC0030E

CAMSHAFT
EM-209
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Revision: 2004 November 2004 FX35/FX45
4. Remove intake and exhaust camshaft brackets.

Mark camshafts, camshaft brackets and bolts so placed in the same position and direction for installa-
tion.

Equally loosen camshaft brackets and bolts in several steps in
reverse order as shown in the figure.

Lightly tapping with plastic hammer, remove camshaft bracket
(No. 1) and camshaft bracket (No. 6).
NOTE:
The bottom surface of each bracket will be stuck to cylinder
head because of liquid gasket.
5. Remove camshaft.
6. Remove adjusting shim and valve lifter if necessary.

Identify installation positions, and store them without mixing them up.
INSPECTION AFTER REMOVAL
Camshaft Runout
1. Put V-block on precise flat table, and support No. 2 and No. 5
journal of camshaft.
CAUTION:
Do not support journal No. 1 (on the side of camshaft
sprocket) because it has a different diameter from the other
three locations.
2. Set dial indicator vertically to No. 3 journal.
3. Turn camshaft to one direction with hands, and measure cam-
shaft runout on dial indicator. (Total indicator reading)
4. If it exceeds the limit, replace camshaft.
Camshaft Cam Height
1. Measure camshaft cam height with micrometer.
2. If wear is beyond the limit, replace camshaft.
PBIC0031E
Limit : 0.02 mm (0.0008 in)PBIC2499E
Standard cam height
Intake : 44.865 - 45.055 mm (1.7663 - 1.7738 in)
Exhaust : 43.925 - 44.115 mm (1.7293 - 1.7368 in)
Cam wear limit
: 0.2 mm (0.008 in)
PBIC0039E

EM-212
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CAMSHAFT
Revision: 2004 November 2004 FX35/FX45
VALVE LIFTER HOLE DIAMETER

Measure inner diameter of valve lifter hole of cylinder head with
inside micrometer.
VALVE LIFTER CLEARANCE

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

If it exceeds the standard, referring to 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 and adjusting shims if removed.

Install it in the original position.
2. Install camshafts.

Follow your identification marks made during removal, or fol-
low the identification marks that are present on new cam-
shafts for proper placement and direction.

Install camshaft so that dowel pin on front end face are posi-
tioned as shown in the figure. (No. 1 cylinder TDC on its com-
pression stroke)
NOTE:
Though camshaft does not stop at the position as shown in
the figure, for the placement of cam nose, it is generally
accepted camshaft is placed for the same direction of the fig-
ure.Standard : 34.000 - 34.016 mm (1.3386 - 1.3392 in)
SEM867E
Standard : 0.025 - 0.51 mm (0.0010 - 0.0020 in)
Bank INT/EXHIdentification
ribPaint marks
Identification
mark
M1 M2
RHINT Yes Blue No RH
EXH Yes No Orange RH
LHINT No Blue No LH
EXH No No Orange LH
Camshaft dowel pin
: At cylinder head upper face side in each bank
PBIC2355E
SBIA0366E

CAMSHAFT
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Revision: 2004 November 2004 FX35/FX45
3. Install camshaft brackets.

Remove foreign material completely from camshaft bracket
backside and from cylinder head installation face.

Install by referring to installation location mark on upper sur-
face and front mark.

Install so that installation location mark can be correctly read
when viewed from the side of left exhaust bank.

Apply liquid gasket to mating surface of camshaft bracket (No.
1) as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS".
CAUTION:

After installation, be sure to wipe off any excessive liq-
uid gasket leaking from part “A” and “B” (both on right
and left sides).

Remove completely any excess of liquid gasket inside
bracket.

Apply liquid gasket to mating surface of camshaft bracket (No.
6) on left bank intake as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS".
CAUTION:

After installation, be sure to wipe off any excessive liq-
uid gasket leaking from part “A” and “B” (both on right
and left sides).

Remove completely any excess of liquid gasket inside
bracket.
PBIC0034E
PBIC2356E
PBIC2357E

EM-214
[VK45DE]
CAMSHAFT
Revision: 2004 November 2004 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.

Instal 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 valve clearance. Refer to EM-214, "
Valve Clearance" .
7. Install in the reverse order of removal after this step.
Valve ClearanceABS006IL
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. Warm up engine. Then stop it.
2. Remove rocker covers (right and left bank). Refer to EM-193, "
ROCKER COVER" .
3. Measure valve clearance as follows:
a. Set No. 1 cylinder at TDC of its compression stroke. : 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

CAMSHAFT
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Revision: 2004 November 2004 FX35/FX45

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.
b. Measure valve clearance with feeler gauge.
*: Approximately 20°C (68°F) (Reference data)
CAUTION:
If inspection was carried out with cold engine, make sure
values with fully warmed up engine are still within specifi-
cations.
PBIC2341E
KBIA0400J
Valve clearance standard:
Hot
Intake : 0.304 - 0.416 mm (0.012 - 0.016 in)
Exhaust : 0.308 - 0.432 mm (0.012 - 0.017 in)
Cold*
Intake : 0.26 - 0.34 mm (0.010 - 0.013 in)
Exhaust : 0.29 - 0.37 mm (0.011 - 0.015 in)
SEM139D
PBIC0046E