height INFINITI FX35 2007 Workshop Manual

EM-88
[VQ35DE]
CAMSHAFT
Revision: 2006 July 2007 FX35/FX45
Valve Lifter Clearance
VALVE LIFTER OUTER DIAMETER

Measure the outer diameter at 1/2 height of valve lifter with a
micrometer since valve lifter is in barrel shape.
VALVE LIFTER HOLE DIAMETER

Measure the inner 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 the calculated value is out of 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 timing chain tensioners (secondary) on both sides of cyl-
inder head.

Install timing chain tensioner with its stopper pin attached.

Install timing chain tensioner with sliding part facing down-
ward 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. Standard (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)
PBIC2111E

EM-98
[VQ35DE]
OIL SEAL
Revision: 2006 July 2007 FX35/FX45
OIL SEALPFP:00100
Removal and Installation of Valve Oil SealNBS003GT
REMOVAL
1. Remove camshaft relating to valve oil seal to be removed. Refer to EM-83, "CAMSHAFT" .
2. Remove valve lifters. Refer to EM-83, "
CAMSHAFT" .
3. Turn crankshaft until the cylinder requiring new oil seals is at TDC. This will prevent valve from dropping into cylinder.
4. Remove valve collet.

Compress valve spring with the valve spring compressor, the
attachment, the adapter (SST). Remove valve collet with a
magnet hand.
CAUTION:
When working, take care not to damage valve lifter holes.
5. Remove valve spring retainer, and valve spring.
6. Remove valve oil seal using the valve oil seal puller (SST).
INSTALLATION
1. Apply new engine oil on new valve oil seal joint and seal lip.
2. Using the valve oil seal drift (SST), press fit valve seal to height “H” shown in figure.
NOTE:
Dimension “H”: Height measured before valve spring seat instal-
lation
3. Install in the reverse order of removal after this step.
PBIC1803E
PBIC0884E
Intake and exhaust : 14.3 - 14.9 mm (0.563 - 0.587 in)
PBIC2769E

OIL SEAL EM-99
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Removal and Installation of Front Oil SealNBS003GU
REMOVAL
1. Remove the following parts:

Undercover

Drive belts; Refer to EM-15, "DRIVE BELTS" .

Crankshaft pulley; Refer to EM-64, "TIMING CHAIN" .
2. Remove front oil seal using a suitable tool. CAUTION:
Be careful not to damage front timing chain case and crank-
shaft.
INSTALLATION
1. Apply new engine oil to both oil seal lip and dust seal lip of new front oil seal.
2. Install front oil seal.

Install front oil seal so that each seal lip is oriented as shown
in the figure.

Using a suitable drift, press-fit until the height of front oil seal
is level with the mounting surface.
–Suitable drift: outer diameter 60 mm (2.36 in), inner diameter
50 mm (1.97 in).

Make sure the garter spring is in position and seal lips not
inverted
CAUTION:

Be careful not to damage front timing chain case and
crankshaft.

Press-fit straight and avoid causing burrs or tilting oil
seal.
3. Install in the reverse order of removal after this step.
Removal and Installation of Rear Oil SealNBS003GV
REMOVAL
1. Remove oil pan (upper). Refer to EM-30, "OIL PAN AND OIL STRAINER" .
2. Remove transmission assembly. Refer to AT- 2 6 6 , "
TRANSMISSION ASSEMBLY" .
3. Remove drive plate. Refer to EM-123, "
CYLINDER BLOCK" .
SEM829E
SEM715A
SEM829E

CYLINDER HEAD EM-107
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Revision: 2006 July 2007 FX35/FX45
6. Remove valve oil seal using the valve oil seal puller (SST).
7. If valve seat must be replaced, refer to EM-110, "
VALVE SEAT REPLACEMENT" .
8. If valve guide must be replaced, refer to EM-109, "
VALVE GUIDE REPLACEMENT" .
9. Remove spark plug tube, as necessary.

Using a pliers, pull spark plug tube out of cylinder head.
CAUTION:

Take care not to damage cylinder head.

Once removed, spark plug tube will be deformed and cannot be reused. Do not remove it unless
absolutely necessary.
ASSEMBLY
1. When valve guide is removed, install it. Refer to EM-109, "VALVE GUIDE REPLACEMENT" .
2. When valve seat is removed, install it. Refer to EM-110, "
VALVE SEAT REPLACEMENT" .
3. Install new valve oil seals as follows:
a. Apply new engine oil on valve oil seal joint and seal lip.
b. Install with the valve oil seal drift (SST) to match dimension in the figure.
4. Install valve spring seat.
5. Install valve.

Larger diameter valves are for intake side.
NOTE:
Larger diameter valves are for intake side.
6. Install valve spring (uneven pitch type).

Install narrow pitch end (paint mark) to cylinder head side
(valve spring seat side).

Intake side and exhaust side valve springs are different.
Install them referring to the following paint mark collar.
7. Install valve spring retainer.
PBIC0884E
Height “H” (Without valve spring seat installed) Intake and exhaust : 14.3 - 14.9 mm (0.563 - 0.587 in)
PBIC2769E
Paint mark collarIntake and Exhaust : Blue
SEM085D

EM-108
[VQ35DE]
CYLINDER HEAD
Revision: 2006 July 2007 FX35/FX45
8. Install valve collet.

Compress valve spring with the valve spring compressor, the
attachment and the adapter (SST). Install valve collet with a
magnet hand.
CAUTION:
When working, take care not to damage valve lifter holes.

Tap valve stem edge lightly with plastic hammer after installa-
tion to check its installed condition.
9. Install valve lifter.

Install it in the original position.
10. Install spark plug tube.

Press-fit spark plug tube as follows:
a. Remove old liquid gasket adhering to cylinder head mounting hole.
b. Apply sealant to area within approximately 12 mm (0.47 in) from edge of spark plug tube press-fit side. Use Genuine High Strength Locking Sealant or equivalent. Refer to GI-48, "
RECOMMENDED
CHEMICAL PRODUCTS AND SEALANTS" .
c. Using drift, press-fit spark plug tube so that its height “H” is as specified in the figure.
CAUTION:

When press-fitting, take care not to deform spark plug
tube.

After press-fitting, wipe off liquid gasket protruding onto
cylinder-head upper face.
11. Install spark plug with spark plug wrench (commercial service tool).
Inspection After DisassemblyNBS003H0
VALVE DIMENSIONS

Check the dimensions of each valve. For the dimensions, refer to EM-155, "Valve Dimensions" .

If dimensions are out of the standard, replace valve and check valve seat contact. Refer to EM-110,
"VALVE SEAT CONTACT" .
VALVE GUIDE CLEARANCE
Valve Stem Diameter
Measure the diameter of valve stem with micrometer.
Valve Guide Inner Diameter
Measure the inner diameter of valve guide with an inside micrometer.
PBIC1803E
Standard press-fit height “H”:
: 38.1 - 39.1 mm (1.500 - 1.539 in)
PBIC2638E
StandardIntake : 5.965 - 5.980 mm (0.2348 - 0.2354 in)
Exhaust : 5.955 - 5.970 mm (0.2344 - 0.2350 in)
SEM938C

EM-112
[VQ35DE]
CYLINDER HEAD
Revision: 2006 July 2007 FX35/FX45
VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD

Check the valve spring pressure at specified spring height.

If the installation load or load with valve open is out of the standard, replace valve spring. Standard:
Intake and exhaustFree height: 47.07 mm (1.8531 in)
Installation height : 37.0 mm (1.457 in)
Installation load : 166 - 188 N (16.9 - 19.2 kg, 37 - 42 lb)
Height during valve open : 27.2 mm (1.071 in)
Load with valve open : 373 - 421 N (38.0 - 42.9 kg, 84 - 95 lb)
SEM113

CYLINDER BLOCK EM-149
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45

Remove main bearing caps and bearings, and using the scale
on the plastigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
MAIN BEARING CRUSH HEIGHT

When main bearing cap is removed after being tightened to the
specified torque with main bearings installed, the tip end of bear-
ing must protrude. Refer to EM-129, "
ASSEMBLY" for the tight-
ening procedure.

If the standard is not met, replace main bearings.
CONNECTING ROD BEARING CRUSH HEIGHT

When connecting rod bearing cap is removed after being tight-
ened to the specified torque with connecting rod bearings
installed, the tip end of bearing must protrude. Refer to EM-129,
"ASSEMBLY" for the tightening procedure.

If the standard is not met, replace connecting rod bearings.
MAIN BEARING CAP BOLT OUTER DIAMETER

Measure the outer diameters (“d1 ”, “d2 ”) at two positions as
shown in the figure.

If reduction appears in “A” range, regard it as “d2 ”.

If it exceeds the limit (large difference in dimensions), replace
main bearing cap bolt with new one.
PBIC1149E
Standard : There must be crush height.
SEM502G
Standard : There must be crush height.
PBIC1646E
Limit (“d1 ” – “d2 ”) : 0.11 mm (0.0043 in)
PBIC0911E

SERVICE DATA AND SPECIFICATIONS (SDS) EM-153
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Revision: 2006 July 2007 FX35/FX45
CAMSHAFT AND CAMSHAFT BEARING
Unit: mm (in)
*
1 : Cam wear limit
*2 : Total indicator reading
Valve Lifter
Unit: mm (in)
Valve Clearance
Unit: mm (in)
*: Approximately 80 °C (176 °F) Items Standard Limit
Camshaft journal oil clearance No. 1 0.045 - 0.086 (0.0018 - 0.0034)
0.15 (0.0059)
No. 2, 3, 4 0.035 - 0.076 (0.0014 - 0.0030)
Camshaft bracket inner diameter No. 1 26.000 - 26.021 (1.0236 - 1.0244) —
No. 2, 3, 4 23.500 - 23.521 (0.9252 - 0.9260) —
Camshaft journal diameter No. 1 25.935 - 25.955 (1.0211 - 1.0218) —
No. 2, 3, 4 23.445 - 23.465 (0.9230 - 0.9238) —
Camshaft end play 0.115 - 0.188 (0.0045 - 0.0074) 0.24 (0.0094)
Camshaft cam height “A” Intake and exhaust 44.865 - 45.055 (1.7663 - 1.7738) 0.2 (0.008)*
1
Camshaft runout [TIR*2 ] Less than 0.02 mm (0.0008) 0.05 (0.0020)
Camshaft sprocket runout [TIR*
2 ] — 0.15 (0.0059)
SEM671
Items Standard
Valve lifter outer diameter 33.977 - 33.987 (1.3377 - 1.3381)
Valve lifter hole diameter 34.000 - 34.016 (1.3386 - 1.3392)
Valve lifter clearance 0.013 - 0.039 (0.0005 - 0.0015)
Items 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)

SERVICE DATA AND SPECIFICATIONS (SDS) EM-155
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Revision: 2006 July 2007 FX35/FX45
CYLINDER HEAD
Unit: mm (in)
Valve Dimensions
Unit: mm (in)
Items Standard Limit
Head surface distortion Less than 0.03 (0.0012) 0.1 (0.004)
Normal cylinder head height “H” 126.3 - 126.5 (4.97 - 4.98) —
PBIC0924E
Valve head diameter “D” Intake 37.0 - 37.3 (1.457 - 1.469)
Exhaust 31.2 - 31.5 (1.228 - 1.240)
Valve length “L” Intake 96.46 (3.7976)
Exhaust 93.99 (3.7004)
Valve stem diameter “d” Intake 5.965 - 5.980 (0.2348 - 0.2354)
Exhaust 5.955 - 5.970 (0.2344 - 0.2350)
Valve seat angle “ α” Intake
45 °15 ′ - 45 °45 ′
Exhaust
Valve margin “T” Intake 1.1 (0.043)
Exhaust 1.3 (0.051)
Valve margin “T” limit 0.5 (0.020)
Valve stem end surface grinding limit 0.2 (0.008)
SEM188

SERVICE DATA AND SPECIFICATIONS (SDS) EM-157
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Revision: 2006 July 2007 FX35/FX45
Valve Seat
Unit: mm (in)
*
1 : Diameter made by intersection point of conic angles “ α1” and “ α2”
*2 : Diameter made by intersection point of conic angles “ α2” and “ α3”
*3 : Machining data
Valve Spring
Items Standard Oversize (Service) [0.5 (0.02)]
Cylinder head seat recess diameter “D” Intake 38.000 - 38.016 (1.4961 - 1.4967) 38.500 - 38.516 (1.5157 - 1.5164)
Exhaust 32.200 - 32.216 (1.2677 - 1.2683) 32.700 - 32.716 (1.2874 - 1.2880)
Valve seat outer diameter “d” Intake 38.097 - 38.113 (1.4999 - 1.5005) 38.597 - 38.613 (1.5196 - 1.5202)
Exhaust 32.280 - 32.296 (1.2709 - 1.2715) 32.780 - 32.796 (1.2905 - 1.2912)
Valve seat interference fit Intake 0.081 - 0.113 (0.0032 - 0.0044)
Exhaust 0.064 - 0.096 (0.0025 - 0.0038)
Diameter “d1”*
1Intake 35 (1.38)
Exhaust 28.7 (1.130)
Diameter “d2”*
2Intake 36.6 - 36.8 (1.441 - 1.449)
Exhaust 30.6 - 30.8 (1.205 - 1.213)
Angle “ α1” Intake 60
°
Exhaust 60 °
Angle “ α2” Intake 88
°45 ′ - 90 °15 ′
Exhaust 88 °45 ′ - 90 °15 ′
Angle “ α3” Intake 120
°
Exhaust 120 °
Contacting width “W”*
3Intake 1.09 - 1.31 (0.0429 - 0.0516)
Exhaust 1.29 - 1.51 (0.0508 - 0.0594)
Height “h” Intake 5.9 - 6.0 (0.232 - 0.236) 5.05 - 5.15 (0.1988 - 0.2028)
Exhaust 5.9 - 6.0 (0.232 - 0.236) 4.95 - 5.05 (0.1949 - 0.1988)
Depth “H” 6.0 (0.236)
PBIC2745E
Free height mm (in) 47.07 (1.8531)
Pressure N (kg, lb) at height mm (in) Installation 166 - 188 (16.9 - 19.2, 37 - 42) at 37.0 (1.457)
Valve open 373 - 421 (38.0 - 42.9, 84 - 95) at 27.2 (1.071)
Out-of-square mm (in) Limit 2.1 (0.083)