shaft INFINITI FX35 2004 Service Manual

EM-76
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
10. Pull stopper pins out from timing chain tensioners (secondary).
11. Install primary timing chain as follows:
a. Install crankshaft sprocket.

Make sure the mating marks on crankshaft sprocket face the
front of engine.
b. Install primary timing chain.

Install primary timing chain so the mating mark (punched) on
camshaft sprocket is aligned with the yellow link on timing
chain, while the mating mark (notched) on crankshaft
sprocket is aligned with the orange one on timing chain, as
shown.

When it is difficult to align mating marks of primary timing
chain with each sprocket, gradually turn camshaft using a
wrench on the hexagonal portion to align it with the mating
marks.

During alignment, be careful to prevent dislocation of mating
mark alignments of secondary timing chains.
SEM923G
SEM929E
PBIC1132E

TIMING CHAIN
EM-79
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
19. Install front timing chain case as follows:
a. Apply liquid gasket to front timing chain case back side as
shown in the figure with tube presser [SST: WS39930000 ( – )].
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS".
b. Install dowel pin on rear timing chain case into dowel pin hole on
front timing chain case.
c. Tighten bolts to the specified torque in order as shown in the fig-
ure.
d. After tightening, retighten them to specified torque in numerical
order shown in figure.
20. After installing front timing chain case, check the surface height
difference between the following parts on the oil pan mounting
surface.

If not within specification, repeat the installation procedure.
21. Install right and left intake valve timing control covers as follows:
a. Install seal rings in shaft grooves.
b. Apply liquid gasket to intake valve timing control covers as
shown in the figure with tube presser [SST: WS39930000 ( – )].
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS".
PBIC1133E
8 mm (0.31 in) dia. bolts : 1, 2
: 28.4 N·m (2.9 kg-m, 21 ft-lb)
6 mm (0.24 in) dia. bolts : Except the above
: 12.7 N·m (1.3 kg-m, 9 ft-lb)
KBIA1303E
Standard
Front timing chain case to rear timing chain case:
–0.14 to 0.14 mm (–0.005 to 0.0055 in)
SEM943G
SBIA0492E

EM-80
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
c. Install collared O-ring in front cover engine oil hole (left and right
sides).
d. Being careful not to move seal ring from the installation groove,
align dowel pins on chain case with the holes to install intake
valve timing control covers.
e. Tighten bolts in the numerical order as shown in the figure.
22. Install crankshaft pulley as follows:
a. Fix crankshaft using ring gear stopper [SST: KV10117700 (J-44716)].
b. Install crankshaft pulley, taking care not to damage front oil seal.

When press-fitting crankshaft pulley with a plastic hammer, tap on its center portion (not circumfer-
ence).
c. Tighten bolt.
d. Put a paint mark on crankshaft pulley aligning with angle mark
on crankshaft pulley bolt. Then, further retighten bolt by “60”
degrees (equivalent to one graduation).
23. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns
smoothly.
24. For the following operations, perform steps in the reverse order of removal.
NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate 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.
PBIC2045E
PBIC0918E
: 44.1 N·m (4.5 kg-m, 33 ft-lb)
SEM751G

EM-82
[VQ35DE]
CAMSHAFT
Revision: 2004 November 2004 FX35/FX45
CAMSHAFTPFP:13001
Removal and InstallationABS00FPH
1.Intake valve timing control solenoid
valve2. Gasket 3. Camshaft bracket (No. 2 to No. 4)
4. Camshaft (EXH) 5. Camshaft (INT) 6. Camshaft bracket (No. 1)
7. Dowel pin 8. Valve lifter 9. O-ring
10. Chain tensioner 11. Spring 12. Plunger
13. Cylinder head (right bank) 14. Cylinder head (left bank) 15.Camshaft position sensor (PHASE)
(right bank)
16.Camshaft position sensor (PHASE)
(left bank)
SBIA0576E

CAMSHAFT
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Revision: 2004 November 2004 FX35/FX45
REMOVAL
1. Remove front timing chain case, camshaft sprocket, timing chain and rear timing chain case. Refer to EM-
63, "TIMING CHAIN" .
2. If necessary, remove camshaft position sensor (PHASE) (right
and left banks) from cylinder head back side.
CAUTION:

Handle carefully to avoid dropping and shocks.

Do not disassemble.

Do not allow metal powder to adhere to magnetic part at
sensor tip.

Do not place sensors in a location where they are
exposed to magnetism.
3. Remove intake valve timing control solenoid valve from No.1
camshaft bracket.
4. Remove intake and exhaust camshaft brackets.

Mark camshafts, camshaft brackets, and bolts so they are
placed in the same position and direction for installation.

Equally loosen camshaft bracket bolts in several steps in the
reverse order as shown in the figure.
5. Remove camshaft.
6. Remove valve lifter.

Identify installation positions, and store them without mixing them up.
KBIA1046E
SEM443GA
PBIC2050E

EM-84
[VQ35DE]
CAMSHAFT
Revision: 2004 November 2004 FX35/FX45
7. Remove secondary timing chain tensioner from cylinder head.

Remove chain tensioner with its stopper pin attached.
NOTE:
Stopper pin was attached when secondary timing chain was
removed.
INSPECTION AFTER REMOVAL
Camshaft Runout
1. Put V block on precise flat bed, and support No. 2 and No. 4
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 gauge vertically to No. 3 journal.
3. Turn camshaft to one direction with hands, and measure cam-
shaft runout on dial gauge. (Total indicator reading)
4. If it exceeds the standard, replace camshaft.
Camshaft Cam Height
1. Measure camshaft cam height.
2. If wear is beyond the limit, replace camshaft.
Camshaft Journal Oil Clearance
Outer Diameter of Camshaft Journal
Measure outer diameter of camshaft journal.
Inner Diameter of Camshaft Bracket

Tighten camshaft bracket bolt with specified torque. Refer to EM-87, "INSTALLATION" .
SBIA0499E
Standard : Less than 0.05 mm (0.0020 in)PBIC0929E
Standard cam height (intake and exhaust)
: 44.865 - 45.055 mm (1.7663 - 1.7738 in)
Cam wear limit
: 0.2 mm (0.008 in)
EMQ0072D
Standard outer diameter:
No. 1: 25.935 - 25.955 mm (1.0211 - 1.0218 in)
No. 2, 3, 4: 23.445 - 23.465 mm (0.9230 - 0.9238 in)
PBIC0040E

CAMSHAFT
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Revision: 2004 November 2004 FX35/FX45

Using inside micrometer, measure inner diameter “A” of cam-
shaft bracket.
Calculation of Camshaft Journal Oil Clearance
(Journal oil clearance) = (inner diameter of camshaft bracket) – (outer diameter of camshaft journal).
If it exceeds the limit, 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).

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. 4 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.Standard inner diameter:
No. 1 : 26.000 - 26.021 mm (1.0236 - 1.0244 in)
No. 2, 3, 4 : 23.500 - 23.521 mm (0.9252 - 0.9260 in)
PBIC1645E
Standard:
No. 1 : 0.045 - 0.086 mm (0.0018 - 0.0034 in)
No. 2, 3, 4 : 0.035 - 0.076 mm (0.0014 - 0.0030 in)
Limit : 0.15 mm (0.0059 in)
Standard : 0.115 - 0.188 mm (0.0045 - 0.0074 in)
Limit : 0.24 mm (0.0094 in)
SEM864E
Standard : 27.500 - 27.548 mm (1.0827 - 1.0846 in)
Standard : 27.360 - 27.385 mm (1.0772 - 1.0781 in)
KBIA2404J

EM-86
[VQ35DE]
CAMSHAFT
Revision: 2004 November 2004 FX35/FX45
2. Measure camshaft sprocket runout with dial indicator. (Total indi-
cator reading)

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

If anything above is found, replace valve lifter.
Valve Lifter Clearance
Outer Diameter of Valve Lifter
Measure outer diameter at 1/2 height of valve lifter with micrometer
since valve lifter is in barrel shape.
Valve Lifter Hole Diameter
Using inside micrometer, measure diameter of valve lifter hole of cyl-
inder head.
Calculation of Valve Lifter Clearance
(Valve lifter clearance) = (hole diameter of valve lifter) – (outer diameter of valve lifter).
If it exceeds the standard, referring to each standard of valve lifter outer diameter and valve lifter hole diame-
ter, replace either or both valve lifter and cylinder head.Limit : 0.15 mm (0.0059 in)
PBIC0930E
KBIA0182E
Valve lifter outer diameter (Intake and exhaust)
: 33.977 - 33.987 mm (1.3377 - 1.3381 in)
JEM798G
Standard (Intake and exhaust)
: 34.000 - 34.016 mm (1.3386 - 1.3392 in)
SEM867E
Standard (Intake and exhaust)
: 0.013 - 0.039 mm (0.0005 - 0.0015 in)

CAMSHAFT
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Revision: 2004 November 2004 FX35/FX45
INSTALLATION
1. Install secondary chain tensioners on both sides of cylinder
head.

Install chain tensioner with its stopper pin attached.

Install tensioner with sliding part facing downward on right-
side cylinder head, and with sliding part facing upward on left-
side cylinder head.

Install new O-ring as shown in the figure.
2. Install valve lifter.

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

Install camshaft with dowel pin attached to its front end face
on exhaust side.

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 hole and dowel pin on front
end face are positioned as shown in figure. (No. 1 cylinder
TDC on its compression stroke)
NOTE:
Large- and small-pin holes are located on front end face of
intake camshaft, at intervals of 180°. Face small dia. side pin
hole upward (in cylinder head upper face direction).
SBIA0499E
KBIA1071E
Bank INT/EXH Dowel pinPaint marks
Identification
mark
M1 M2
RightINT No Pink No RE
EXH Yes No Orange RE
LeftINT No Pink No LH
EXH Yes No Orange LH
KBIA1009E
KBIA1072E

EM-88
[VQ35DE]
CAMSHAFT
Revision: 2004 November 2004 FX35/FX45
4. Install camshaft brackets.

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

Install camshaft bracket in original position and direction as
shown in the figure.

Install No. 2 to 4 camshaft brackets aligning stamp marks as
shown in the figure.
NOTE:
There are no identification marks indicating left and right for
No. 1 camshaft bracket.

Apply sealant to mating surface of No. 1 camshaft bracket as
shown on right and left banks.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
PBIC2051E
PBIC2052E
PBIC0915E