Cylinder INFINITI FX35 2004 Service Manual

TIMING CHAIN
EM-205
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Revision: 2004 November 2004 FX35/FX45
a. Install new O-rings onto cylinder heads (right and left bank) and
cylinder block.
b. Apply a continuous bead of liquid gasket with tube presser
[SST: WS39930000 ( — )] to front cover as shown in the fig-
ure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
c. make sure again that the mating marks on timing chain and that
on each sprocket are aligned. Then, install front cover.
CAUTION:
Be careful to avoid interference with the front end of oil
pump drive spacer. Such interference may damage front oil
seal.
d. Tighten mounting bolts in numerical order as shown in the fig-
ure.

There are four type mounting bolts.
e. After all bolts are tightened, retighten them in numerical order as shown in the figure.
CAUTION:
Be sure to wipe off any excessive liquid gasket leaking onto surface mating with oil pan.
11. Install intake valve timing control cover as follows:
a. At the back of intake valve timing control cover, install new seal rings (three for each bank) to the area to
be inserted into camshaft sprocket (INT).
CAUTION:
Do not spread seal ring excessively to avoid breaks and deformation.
SBIA0373E
PBIC0062E
KBIA0354J
PBIC1681E

EM-208
[VK45DE]
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-210
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CAMSHAFT
Revision: 2004 November 2004 FX35/FX45
Camshaft Journal Oil Clearance
CAMSHAFT JOURNAL DIAMETER

Measure outer diameter of camshaft journal with micrometer.
CAMSHAFT BRACKET INNER DIAMETER

Tighten camshaft bracket bolt with specified torque. Refer to EM-212, "INSTALLATION" for the tighten-
ing procedure.

Measure inner diameter “A” of camshaft bracket with bore
gauge.
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 brackets cannot be replaced as a single part, because it is machined together with cylinder
head. Replace whole cylinder head assembly.
Camshaft End Play

Install dial indicator in thrust direction on front end of camshaft.
Measure end play of dial indicator when camshaft is moved for-
ward/backward (in direction to axis).Standard:
No. 1 : 25.938 - 25.955 mm (1.0212 - 1.0218 in)
No. 2, 3, 4 : 25.953 - 25.970 mm (1.0218 - 1.0224 in)
PBIC0040E
Standard:
26.000 - 26.021 mm (1.0236 - 1.0244 in)
PBIC1645E
Standard:
No. 1 : 0.045 - 0.083 mm (0.0018 - 0.0033 in)
No. 2, 3, 4 : 0.030 - 0.068 mm (0.0012 - 0.0027 in)
Standard:
0.115 - 0.188 mm (0.0045 - 0.0074 in)
PBIC2446E

CAMSHAFT
EM-211
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Revision: 2004 November 2004 FX35/FX45

Measure the following parts if out of the limit.
–Dimension “A” for camshaft No. 1 journal
–Dimension “B” for cylinder head No. 1 journal

Refer to the standards above, and then replace camshaft and/or
cylinder head.
Camshaft Sprocket 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. Measure camshaft sprocket runout with dial indicator. (Total indi-
cator reading)

If it exceeds the limit, replace camshaft sprocket.
Valve Lifter and Adjusting Shim
Check if surface of valve lifter and adjusting shim has any wear or
cracks.

If anything above is found, replace valve lifter.

When replacing adjusting shim, refer to EM-217, "ADJUST-
MENT" .
Valve Lifter Clearance
VALVE LIFTER OUTER DIAMETER

Measure outer diameter of valve lifter with micrometer.Standard : 30.500 - 30.548 mm (1.2008 - 1.2027 in)
Standard : 30.360 - 30.385 mm (1.1953 - 1.1963 in)
KBIA2426J
Limit : 0.15 mm (0.0059 in)
PBIC0930E
PBIC0231E
Standard : 33.965 - 33.975 mm (1.3372 - 1.3376 in)
SEM961E

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
EM-213
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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

EM-216
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CAMSHAFT
Revision: 2004 November 2004 FX35/FX45

By referring to the figure, measure valve clearances at loca-
tions marked “×” as shown in the table below (locations indi-
cated with black arrow in figure).
NOTE:
Firing order 1-8-7-3-6-5-4-2

No.1 cylinder 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.

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

No.3 cylinder compression TDC
Measuring position (right bank)No. 2
CYL.No. 4
CYL.No. 6
CYL.No. 8
CYL.
No. 1 cylinder at TDC EXH ×
INT××
Measuring position (left bank)No. 1
CYL.No. 3
CYL.No. 5
CYL.No. 7
CYL.
No. 1 cylinder at TDCINT××
EXH××
PBIC2358E
PBIC2346E
Measuring position (right bank)No. 2
CYL.No. 4
CYL.No. 6
CYL.No. 8
CYL.
No. 3 cylinder at TDC EXH ×
INT ×
Measuring position (left bank)No. 1
CYL.No. 3
CYL.No. 5
CYL.No. 7
CYL.
No. 3 cylinder at TDCINT××
EXH××
PBIC2358E