2005 INFINITI FX35 engine

TIMING CHAIN EM-83
[VQ35DE]
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Revision: 2005 July 2005 FX

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc. Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage

EM-92
[VQ35DE]
CAMSHAFT
Revision: 2005 July 2005 FX
INSPECTION AFTER INSTALLATION
Inspection of Camshaft Sprocket (INT) Oil Groove
CAUTION:

Perform this inspection only when DTC P0011 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-136,
"SELF-DIAG RESULTS MODE" .

Check when engine ins cold so as to prevent burns from any splashing engine oil.
1. Check the engine oil level. Refer to LU-7, "
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-99, "
FUEL PRESSURE RELEASE" .
b. Disconnect ignition coil and injector harness connectors.
3. Remove intake valve timing control solenoid valve. Refer to EM-84, "
CAMSHAFT" .
4. Crank the engine, and then make sure that engine oil comes out from camshaft bracket (No. 1) oil hole. End crank after checking.
WARNING:
Be careful not to touch rotating parts (drive belts, 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 camshaft bracket (No. 1) oil hole. Refer to LU-5, "
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-5, "LUBRICATION SYSTEM" .
6. After inspection, install removed parts.
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.

Warm up engine thoroughly to make sure there is no leakage of fuel, or any oil/fluids including engine oil
and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
PBIC2869E

CAMSHAFT EM-93
[VQ35DE]
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Revision: 2005 July 2005 FX
Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc.
Va l v e C l e a r a n c eABS004XG
INSPECTION
Perform inspection as follows after removal, installation or replacement of camshaft or valve-related parts, or if
there is unusual engine conditions regarding valve clearance.
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 stating, idling or causing
noise), perform inspection as follows:
1. Remove rocker covers (right and left bank). Refer to EM-51, "
ROCKER COVER" .
2. Measure the valve clearance as follows:
a. Set No. 1 cylinder at TDC of its compression stroke.

Rotate crankshaft pulley clockwise to align timing mark
(grooved line without color) with timing indicator.

Make sure that intake and exhaust cam nose on No. 1 cylin-
der (engine front side of right bank) are located as shown in
the figure.

If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
SEM713A
KBIA1717J
SEM418G

EM-94
[VQ35DE]
CAMSHAFT
Revision: 2005 July 2005 FX
b. Use a 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 in the figure).

No. 1 cylinder at compression TDC
c. Rotate crankshaft by 240 degrees clockwise (when viewed from engine front) to align No. 3 cylinder at TDC of its compression
stroke.
NOTE:
Crankshaft pulley mounting bolt flange has a stamped line every
60 degrees. They can be used as a guide to rotation angle.
SEM139D
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)
Measuring position (right bank) No. 1 CYL. No. 3 CYL. No. 5 CYL.
No. 1 cylinder at
compression TDC EXH
×
INT ×
Measuring position (left bank) No. 2 CYL. No. 4 CYL. No. 6 CYL.
No. 1 cylinder at
compression TDC INT
×
EXH ×
PBIC2054E
SEM751G

CAMSHAFT EM-95
[VQ35DE]
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Revision: 2005 July 2005 FX

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

No. 3 cylinder at compression TDC
d. Rotate crankshaft by 240 degrees clockwise (when viewed from engine front) to align No. 5 cylinder at TDC of compression
stroke.

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

No. 5 cylinder at compression TDC
Measuring position (right bank) No. 1 CYL. No. 3 CYL. No. 5 CYL.
No. 3 cylinder at
compression TDC EXH
×
INT ×
Measuring position (left bank) No. 2 CYL. No. 4 CYL. No. 6 CYL.
No. 3 cylinder at
compression TDC INT
×
EXH ×
PBIC2055E
SEM751G
Measuring position (right bank) No. 1 CYL. No. 3 CYL. No. 5 CYL.
No. 5 cylinder at
compression TDC EXH
×
INT ×
Measuring position (left bank) No. 2 CYL. No. 4 CYL. No. 6 CYL.
No. 5 cylinder at
compression TDC INT
×
EXH ×
PBIC2056E

EM-96
[VQ35DE]
CAMSHAFT
Revision: 2005 July 2005 FX
3. For measured value are out of the standard, perform adjustment. Refer to EM-96, "ADJUSTMENT" .
ADJUSTMENT

Perform adjustment depending on selected head thickness of valve lifter.
1. Measure the valve clearance. Refer to EM-93, "
INSPECTION" .
2. Remove camshaft. Refer to EM-85, "
REMOVAL" .
3. Remove valve lifters at the locations that are out of the standard.
4. Measure the center thickness of the removed valve lifters with a micrometer.
5. Use the equation below to calculate valve lifter thickness for replacement.

Thickness of new valve lifter can be identified by stamp marks
on the reverse side (inside the cylinder).
Stamp mark 788U or 788R indicates 7.88 mm (0.3102 in) in
thickness.
NOTE:
Two types of stamp marks are used for parallel setting and for
manufacturer identification.
Available thickness of valve lifter: 27 sizes with range 7.88 to 8.40 mm (0.3102 to 0.3307 in) in steps of
0.02 mm (0.0008 in) (when manufactured at factory). Refer to EM-153, "
Available Valve Lifter" .
6. Install selected valve lifter.
7. Install camshaft. Refer to EM-89, "
INSTALLATION" .
8. Manually turn crankshaft pulley a few turns.
9. Make sure that the valve clearances for cold engine are within the specifications by referring to the speci- fied values. Refer to EM-93, "
INSPECTION" .
10. Install all removal parts in the reverse order of removal. Refer to EM-89, "
INSTALLATION" .
11. Warm up the engine, and check for unusual noise and vibration.
KBIA0057E
Valve lifter thickness calculation: t = t1 + (C1 –
C
2 )
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)*
*: Approximately 20 °C (68 °F)
KBIA0119E

OIL SEAL EM-97
[VQ35DE]
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Revision: 2005 July 2005 FX
OIL SEALPFP:00100
Removal and Installation of Valve Oil SealABS004X4
REMOVAL
1. Remove camshaft relating to valve oil seal to be removed. Refer to EM-84, "CAMSHAFT" .
2. Remove valve lifters. Refer to EM-84, "
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

EM-98
[VQ35DE]
OIL SEAL
Revision: 2005 July 2005 FX
Removal and Installation of Front Oil SealABS004X5
REMOVAL
1. Remove the following parts:

Undercover

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

Starter motor; Refer to SC-10, "STARTING SYSTEM" .

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 SealABS004X6
REMOVAL
1. Remove oil pan (upper). Refer to EM-30, "OIL PAN AND OIL STRAINER" .
2. Remove transmission assembly. Refer to AT- 2 7 0 , "
TRANSMISSION ASSEMBLY" .
3. Remove drive plate. Refer to EM-122, "
CYLINDER BLOCK" .
SEM829E
SEM715A
SEM829E