Cylinder INFINITI FX35 2004 Service Manual

CAMSHAFT
EM-217
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Revision: 2004 November 2004 FX35/FX45
d. Rotate crankshaft pulley clockwise (when view from engine
front) by 90 degrees from the position of No. 3 cylinder compres-
sion TDC to align No. 6 cylinder at TDC of its compression
stroke.

By referring to the figure, measure valve clearances at loca-
tions marked “×” as shown in the table below.

No. 6 cylinder compression TDC
4. For measured value are out of the standard, perform adjustment. Refer to EM-217, "
ADJUSTMENT" .
ADJUSTMENT
CAUTION:

Adjust valve clearance while engine is cold.

After adjusting, make sure that the valve clearance is within the standard while engine is hot.
1. Thoroughly wipe off engine oil around adjusting shim using rag.
2. Rotate crankshaft to position cam nose on camshaft of valve that must be adjusted upward.
3. Using small screwdriver, turn the round hole of adjusting shim in
the direction of the arrow.
CAUTION:
perform (the above procedure) during camshaft do not con-
tact with adjusting shim.
4. Install lifter stopper [SST: 10115120 (J38972-2)] as follows:
a. Except exhaust side of No. 7 and No. 8 cylinder;
i. Place camshaft pliers (SST) around camshaft as shown in the
figure.
ii. Rotate camshaft pliers so that valve lifter is pushed down.
CAUTION:
Be careful not to damage cam surface, valve lifter and cylin-
der head with camshaft pliers.
PBIC2346E
Measuring position (right bank)No. 2
CYL.No. 4
CYL.No. 6
CYL.No. 8
CYL.
No. 6 cylinder at TDC EXH× ×
INT ×
PBIC0824E
PBIC0047E
PBIC2276E

EM-218
[VK45DE]
CAMSHAFT
Revision: 2004 November 2004 FX35/FX45
iii. Place lifter stopper between camshaft and the edge of valve
lifter to retain valve lifter.
CAUTION:

Lifter stopper must be placed as close to camshaft
bracket as possible.

Be careful not to damage cam surface, valve lifter and
cylinder head with lifter stopper.
iv. Remove camshaft pliers.
CAUTION:
Camshaft pliers should be removed by rotating it slowly
because lifter stopper hits and damages journal portion by
rotating camshaft pliers quickly.
b. Exhaust side of No. 7 and No. 8 cylinder;
NOTE:
Exhaust side of No. 7 and No. 8 cylinder does not have space for installing camshaft pliers [SST:
KV10115110 (J38972-1)]. therefore, install lifter stopper [SST: KV10115120 (J38972-2)] according to the
following instructions.
i. Rotate crankshaft to press cam nose to the adjusting part of valve lifter.
ii. Place lifter stopper between camshaft and the edge of valve lifter to retain valve lifter.
CAUTION:

Lifter stopper must be placed as close to camshaft bracket as possible.

Be careful not to damage cam surface, valve lifter and cylinder head with lifter stopper.
iii. Rotate crankshaft slowly 180 degrees clockwise.
CAUTION:
Rotating crankshaft slowly because lifter stopper hits and damages journal portion by rotating
crankshaft quickly.
5. Blow air into the round hole to separate adjusting shim from
valve lifter.
CAUTION:
When blowing, use goggles to protect your eye.
6. Remove adjusting shim with magnetic hand.
7. Use the equation below to calculate adjusting shim thickness for replacement.
PBIC1565E
PBIC1566E
PBIC2359E

CAMSHAFT
EM-219
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Revision: 2004 November 2004 FX35/FX45

Using micrometer determine thickness of removed shim with
measured at center.

Calculate thickness of new adjusting shim so valve clearance comes within specified values (Cold
value).
Shims are available in 64 sizes from 2.32 mm (0.0913 in) to 2.95 mm (0.1161 in) in steps of 0.01
mm (0.0004 in).

Thickness of new adjusting shim can be identified by stamp
marks on the reverse side (inside the cylinder).
8. Install new adjusting shim using suitable tool.

Install with the surface on which the thickness is
stamped facing down.
9. Remove lifter stopper as follows:
a. Except exhaust side of No. 7 and No. 8 cylinder;
SEM145D
Valve lifter thickness calculation: t = t1 + (C1 – C2 )
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)
SEM873E
PBIC1568E

EM-220
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CAMSHAFT
Revision: 2004 November 2004 FX35/FX45
i. Perform same procedure for removal, place camshaft pliers
(SST).
ii. Remove lifter stopper (SST).
iii. Remove camshaft pliers.
b. Exhaust side of No. 7 and No. 8 cylinder.

Rotate crankshaft slowly 180 degrees clockwise. then remove lifter stopper.
10. Manually rotate crankshaft pulley a few turns.
11. Make sure that the valve clearance is within the standard.
12. Make sure again that the valve clearance for hot engine is within specifications by referring to the speci-
fied values.
Valve clearance:
Unit: mm (in)
*: Approximately 20°C (68°F)
PBIC1569E
Hot Cold* (reference data)
Intake 0.304 - 0.416 (0.012 - 0.016) 0.26 - 0.34 (0.010 - 0.013)
Exhaust 0.308 - 0.432 (0.012 - 0.017) 0.29 - 0.37 (0.011 - 0.015)

OIL SEAL
EM-221
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Revision: 2004 November 2004 FX35/FX45
OIL SEALPFP:00100
Removal and Installation of Valve Oil SealABS006IM
REMOVAL
1. Remove engine assembly from vehicle. Refer to EM-236, "ENGINE ASSEMBLY" .
2. Remove camshaft relating to valve oil seal to be removed. Refer to EM-208, "
CAMSHAFT" .
3. Remove adjusting shims and valve lifters. Refer to EM-208, "
CAMSHAFT" .

Identify installation positions, and store them without mixing them up.
4. Turn crankshaft until the cylinder requiring new oil seals is at TDC. This will prevent valve from dropping
into cylinder.
5. Remove valve collet.

Compress valve spring with valve spring compressor, attach-
ment and adapter (SST). Remove valve collet with magnetic
hand.
CAUTION:
When working, take care not to damage valve lifter holes.
6. Remove valve spring retainer and valve spring.
CAUTION:
Do not remove valve spring seat from valve spring.
7. Remove valve oil seal using valve oil seal puller (SST).
INSTALLATION
1. Apply engine oil on new valve oil seal joint and seal lip.
2. Install valve oil seal.

Install with valve oil seal drift (SST) to match dimension in the
figure.
3. Install in the reverse order of removal after this step.
PBIC2360E
PBIC0072E
PBIC0073E

OIL SEAL
EM-223
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Revision: 2004 November 2004 FX35/FX45

Install it so that each seal lip is oriented as shown in the fig-
ure.
CAUTION:

Be careful not to damage front cover and oil pump drive
spacer.

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 SealABS006IO
REMOVAL
1. Remove transmission (with transfer) assembly. Refer to AT- 2 6 9 , "Removal and Installation (AWD mod-
els)" .
a. Remove drive plate. Refer to EM-240, "
CYLINDER BLOCK" .
b. Remove engine rear plate. Refer to EM-240, "
CYLINDER BLOCK" .
2. Remove rear oil seal using suitable tool.
CAUTION:
Be careful not to damage crankshaft and oil seal retainer
surface.
INSTALLATION
1. Apply engine oil to both oil seal lip and dust seal lip.
2. Using suitable drift, press fit until the height of front oil seal is
level with the mounting surface.

Install it so that each seal lip is oriented as shown in the fig-
ure.
CAUTION:

Be careful not to damage crankshaft and rear oil seal
retainer.

Press fit straight and avoid causing burrs or tilting oil
seal.
3. Install in the reverse order of removal after this step.
SEM715A
SBIA0360E
Suitable drift
Outer diameter : 102 mm (4.02 in)
Inner diameter : 86 mm (3.39 in)
SBIA0360E
SEM715A

EM-224
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CYLINDER HEAD
Revision: 2004 November 2004 FX35/FX45
CYLINDER HEADPFP:11041
On-Vehicle ServiceABS006IP
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-700, "
FUEL PRESSURE RELEASE" .
a. Remove fuel pump fuse to avoid fuel injection during measure-
ment.
3. Remove engine cover with power tool. Refer to EM-168, "
ENGINE ROOM COVER" .
4. Remove ignition coil and spark plug from each cylinder. Refer to EM-185, "
IGNITION COIL" and EM-186,
"SPARK PLUG (PLATINUM-TIPPED TYPE)" .
5. Connect engine tachometer (not required in use of CONSULT-II).
6. Install compression gauge with adapter (SST or commercial ser-
vice tool) onto spark plug hole.

Use compression gauge adapter (SST) which is required on
No. 7 and No. 8 cylinders.

Use compression gauge adapter (if no SST is used) whose
picking up end inserted to spark plug hole is smaller than 20
mm (0.79 in) in diameter. Otherwise, it may be caught by cyl-
inder head during removal.
7. With accelerator pedal fully depressed, turn ignition switch to “START” for cranking. When the gauge
pointer stabilizes, read the compression pressure and engine rpm. Perform these steps to check each cyl-
inder.
Compression pressure:
Unit: kPa (kg/cm2 , psi) /rpm
CAUTION:
Always use a fully changed battery to obtain specified engine speed.
PBIB1482E
PBIC1554E
SBIA0533E
Standard Minimum Deferential limit between cylinders
1,320 (13.5, 191) / 300 1,130 (11.5, 164) / 300 98 (1.0, 14) / 300

CYLINDER HEAD
EM-225
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Revision: 2004 November 2004 FX35/FX45

If the engine speed is out of specified range, check battery liquid for proper gravity. Check engine
speed again with normal battery gravity.

If compression pressure is below minimum value, check valve clearances and parts associated with
combustion chamber (valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). After the checking, measure compression pressure again.

If some cylinders have low compression pressure, pour small amount of engine oil into the spark plug
hole of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, piston rings may be worn out or damaged. Check the
piston rings and replace if necessary.
–If the compression pressure remains at low level despite the addition of engine oil, valves may be mal-
functioning. Check valves for damage. Replace valve or valve seat accordingly.

If two adjacent cylinders have respectively low compression pressure and their compression remains
low even after the addition of engine oil, gaskets are leaking. In such a case, replace cylinder head gas-
kets.
8. After inspection is completed, install removed parts in the reverse order of removal.
9. Start engine, and make sure that engine runs smoothly.
10. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-726, "
TROUBLE DIAGNOSIS" .
Removal and InstallationABS006IQ
REMOVAL
1. Remove engine assembly from vehicle. Refer to EM-236, "ENGINE ASSEMBLY" .
2. Remove exhaust manifold. Refer to EM-178, "
EXHAUST MANIFOLD AND THREE WAY CATALYST" .
3. Remove camshaft. Refer to EM-208, "
CAMSHAFT" .
1. Engine coolant temperature sensor 2. Washer 3. Cylinder head gasket (left bank)
4. Harness bracket 5. Cylinder head (right bank) 6. Cylinder head bolt
7. Cylinder head gasket (right bank) 8. Cylinder head bolt 9. Cylinder head (left bank)
PBIC2407E

EM-226
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CYLINDER HEAD
Revision: 2004 November 2004 FX35/FX45
4. Remove cylinder head bolts in reverse order as shown in the fig-
ure with cylinder head bolt wrench (commercial service tool).
5. Remove cylinder head gaskets.
INSPECTION AFTER REMOVAL
Cylinder Head Bolts Outer Diameter

Cylinder head bolts are tightened by plastic zone tightening
method. Whenever the size difference between “d1” and “d2”
exceeds the limit, replace them with new one.

If reduction of outer diameter appears in a position other than
“d2”, use it as “d2” point.
Cylinder Head Distortion
NOTE:
When performing this inspection, cylinder block distortion should be also checking. Refer to EM-259, "
CYLIN-
DER BLOCK DISTORTION" .
1. Using scraper, wipe off oil, scale, gasket, sealant and carbon deposits from surface of cylinder head.
CAUTION:
Do not allow gasket fragments to enter engine oil or engine coolant passages.
2. At each of several locations on bottom surface of cylinder head,
measure distortion in six directions.

If it exceeds the limit, replace cylinder head.
INSTALLATION
1. Install cylinder head gasket.
2. Turn crankshaft until No. 1 piston is set at TDC.
PBIC0068E
Limit (“d1” - “d2”) : 0.18 mm (0.0071 in)
PBIC2361E
Limit : 0.1 mm (0.004 in)
PBIC0075E

CYLINDER HEAD
EM-227
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Revision: 2004 November 2004 FX35/FX45

Crankshaft key should line up with the left bank cylinder cen-
ter line as shown in the figure.
3. Install cylinder head follow the steps below to tighten cylinder
head bolts in numerical order as shown in the figure.
CAUTION:
If cylinder head bolts are re-used, check their outer diame-
ters before installation. Refer to EM-226, "
Cylinder Head
Bolts Outer Diameter" .
a. Apply engine oil to threads and seating surface of cylinder head
bolts.
b. Tighten all bolts. 98.1 N·m (10 kg-m, 72 ft-lb).
c. Completely loosen all bolts.
CAUTION:
In step “c”, loosen bolts in reverse order of that indicated in the figure.
d. Tighten all bolts to 44.1 N·m (4.5 kg-m, 33 ft-lb).
e. Turn all bolts 60 degrees clockwise. (Angle tightening)
CAUTION:
Check and confirm the tightening angle by using angle
wrench (SST) and cylinder head bolt wrench (commercial
service tool). Avoid judgment by visual inspection without
SST.
f. Turn all bolts 60 degrees clockwise again. (Angle tightening)
4. Install in the reverse order of removal after this step.
PBIC2389E
: 98.1 N·m (10 kg-m, 72 ft-lb)
: 0 N·m (0 kg-m, 0 ft-lb)
: 44 N·m (4.5 kg-m, 33 ft-lb)PBIC0068E
PBIC0069E