torque INFINITI FX35 2004 Service Manual

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45
5. Install main bearings and thrust bearings.
a. Remove dust, dirt, and engine oil on the bearing mating sur-
faces of cylinder block and main bearing cap.
b. Install thrust bearings to the both sides of No. 3 journal housing
on cylinder block and main bearing cap.

Install thrust bearings with the oil groove facing to the crank-
shaft arm (outside).

Install bearing with a projection on one end on cylinder block,
and bearing with a projection at center on cap. Align each pro-
jection with mating notch.
c. Install main bearings paying attention to the direction.

Main bearing with an oil hole and groove goes on cylinder
block. The one without them goes on main bearing cap.

Before installing bearings, apply engine oil to the bearing sur-
face (inside). Do not apply engine oil to the back surface, but
thoroughly clean it.

When installing, align the bearing stopper to the notch.

Ensure the oil holes on cylinder block and those on the corre-
sponding bearing are aligned.
6. Install crankshaft to cylinder block.

While turning crankshaft by hand, make sure it turns
smoothly.
7. Install main bearing cap.

Main bearing caps are identified by identification mark cast on
them. For installation, face front mark to front side.
NOTE:
Main bearing cap cannot be replaced as a single part,
because it is machined together with cylinder block.
8. Install main bearing beam.

Install main bearing beam with front mark facing downward
(oil pan side).

Install main bearing beam with front mark facing front of
engine.
9. Inspect outer diameter of main bearing cap bolt. Refer to EM-
144, "MAIN BEARING CAP BOLT OUTER DIAMETER" .
10. Install main bearing cap bolt.
a. Apply new engine oil to threads and seat surfaces of mounting
bolts.
b. Tighten bolts in numerical order with tightening torque in several
different steps.
PBIC0807E
SEM175F
SEM456G
PBIC0881E
: 35.3 N·m (3.6 kg-m, 26 ft-lb)
SEM851E

EM-138
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
CONNECTING ROD BEND AND TORSION

Check with connecting rod aligner.

If it exceeds the limit, replace connecting rod assembly.
CONNECTING ROD BEARING HOUSING DIAMETER (BIG END)
Install connecting rod cap without connecting rod bearing installed.
After tightening connecting rod bolt to the specified torque, measure
the connecting rod big end inner diameter using an inside microme-
ter. Refer to EM-126, "
ASSEMBLY" for the tightening procedure.
CONNECTING ROD BUSHING OIL CLEARANCE (SMALL END)
Piston Pin Bushing Inner Diameter (Small End)
Measure inner diameter of bushing.Bend:
Limit : 0.15 mm (0.0059 in) per 100 mm (3.94 in) length
Torsion:
Limit : 0.30 mm (0.0118 in) per 100 mm (3.94 in) length
PBIC2077E
Standard : 55.000 - 55.013 mm (2.1654 - 2.1659 in)
PBIC1641E
Standard : 22.000 - 22.012 mm (0.8661 - 0.8666 in)
PBIC0120E

EM-140
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45

Measure the distortion on the block upper face at some different
points in 6 directions.

If out of the distortion limit, replace cylinder block.
MAIN BEARING HOUSING INNER DIAMETER

Install main bearing caps and main bearing beam with main
bearings removed, and tighten mounting bolts to the specified
torque. Refer to EM-126, "
ASSEMBLY" for the tightening proce-
dure.

Using a bore gauge, measure the inner diameter of the main
bearing housing.

If out of the standard, replace cylinder block and main bearing
caps as assembly.
NOTE:
Cylinder block cannot be replaced as single part, because it is
machined together with main bearing caps.
PISTON TO CYLINDER BORE CLEARANCE
Cylinder Bore Inner Diameter

Using a bore gauge, measure cylinder bore for wear, out-of-
round and taper at 6 different points on each cylinder. (“X” and
“Y” directions at “A”, “B” and “C”) (“Y” is in longitudinal direction
of engine)

If the measured value exceeds the limit, or if there are scratches
and/or seizure on the cylinder inner wall, hone or re-bore the
inner wall.

An oversize piston is provided. When using an oversize piston,
re-bore cylinder so that the clearance of the piston-to-cylinder
bore satisfies the standard.
CAUTION:
When using oversize piston, use it for all cylinders with
oversize piston rings.

When using an oversize piston, use it for all cylinders with over-
size piston rings.Limit : 0.10 mm (0.0039 in)
SEM123C
Standard : 63.993 - 64.017 mm (2.5194 - 2.5203 in)
PBIC1643E
Standard inner diameter:
95.500 - 95.530 mm (3.7598 - 3.7610 in)
Wear limit:
0.20 mm (0.0079 in)
Out-of-round (Difference between “X” and “Y”):
Limit: 0.015 mm (0.0006 in)
Taper (Difference between “A” and “C”):
Limit: 0.010 mm (0.0004 in)
Oversize (Service) : 0.20 mm (0.0079 in)
PBIC0923E
SEM843E

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45
Piston Skirt Diameter
Measure piston skirt diameter using micrometer.
Piston-to-Cylinder Bore Clearance

Calculate by piston skirt diameter and cylinder bore inner diameter (direction “X”, position “B”).
(Clearance) = (Cylinder bore inner diameter) – (Piston skirt diameter).

If it exceeds the limit, replace piston/piston pin assembly. Refer to EM-131, "HOW TO SELECT PISTON" .
Re-Boring Cylinder Bore
1. Cylinder bore size is determined by adding piston-to-cylinder bore clearance to piston diameter “A”.
2. Install main bearing caps and main bearing beam, and tighten to the specified torque. Otherwise, cylinder
bores may be distorted in final assembly.
3. Cut cylinder bores.
NOTE:

When any cylinder needs boring, all other cylinders must also be bored.

Do not cut too much out of cylinder bore at a time. Cut only 0.05 mm (0.0020 in) or so in diameter at a
time.
4. Hone cylinders to obtain specified piston-to-cylinder bore clearance.
5. Measure finished cylinder bore for out-of-round and taper.
NOTE:
Measurement should be done after cylinder bore cools down.
CRANKSHAFT MAIN JOURNAL DIAMETER

Measure outer diameter of crankshaft main journals with micrometer.

If out of the standard, measure the main bearing oil clearance. Then use undersize bearing. Refer to EM-
143, "MAIN BEARING OIL CLEARANCE" . Measure point
: Distance from the top 41.0 mm (1.614 in)
Standard
: 95.480 - 95.510 mm (3.7590 - 3.7602 in)
PBIC0125E
Standard : 0.010 - 0.030 mm (0.0004 - 0.0012 in)
Limit : 0.08 mm (0.0031 in)
Re-bored size calculation: “D” = “A” + “B” - “C”
where,
“D”: Bored diameter
“A”: Piston diameter as measured
“B”: Piston - to - cylinder bore clearance (standard value)
“C”: Honing allowance 0.02 mm (0.0008 in)
Standard : 59.951 - 59.975 mm (2.3603 - 2.3612 in) dia.

EM-142
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CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
CRANKSHAFT PIN JOURNAL DIAMETER

Measure outer diameter of crankshaft pin journal with microme-
ter.

If out of the standard, measure the connecting rod bearing oil
clearance. Then use undersize bearing. Refer to EM-142,
"CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT OUT-OF-ROUND AND TAPER

Using a micrometer, measure the dimensions at “4” different
points shown in the figure on each journal and pin.

Out-of-round is indicated by the difference in dimensions
between “X” and “Y” at “A” and “B”.

Taper is indicated by the difference in dimension between “A”
and “B” at “X” and “Y”.

If the measured value exceeds the limit, correct or replace crankshaft.

If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then
select the main bearing and/or connecting rod bearing. Refer to EM-143, "
MAIN BEARING OIL CLEAR-
ANCE" and/or EM-142, "CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT RUNOUT

Place a V-block on a precise flat table to support journals on the
both end of crankshaft.

Place a dial gauge straight up on No. 3 journal.

While rotating crankshaft, read the movement of the pointer on
the dial gauge. (Total indicator reading)

If it exceeds the limit, replace crankshaft.
CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation

Install connecting rod bearings to connecting rod and connect-
ing rod bearing cap, and tighten connecting rod bolts to the
specified torque. Using a inside micrometer measure the inner
diameter of connecting rod bearing. Refer to EM-126, "
ASSEM-
BLY" for the tightening procedure.
(Oil clearance) = (Connecting rod bearing inner diameter) – (Crank-
shaft pin diameter)Standard : 51.956 - 51.974 mm (2.0455 - 2.0462 in) dia.
PBIC0127E
Standard
Taper (Difference between “A” and “B”)
: Less than 0.002 mm (0.0001 in)
Out-of-round (Difference between “X” and “Y”)
: Less than 0.002 mm (0.0001 in)
SBIA0535E
Standard : Less than 0.025 mm (0.0010 in)
Limit : Less than 0.10 mm (0.0039 in)
SEM346D
Standard : 0.034 - 0.059 mm (0.0013 - 0.0023 in)
(actual clearance)
Limit : 0.070 mm (0.0028 in)
PBIC1642E

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45

If clearance cannot be adjusted within the standard, grind crankshaft pin and use undersized bearing.
Refer to EM-132, "
HOW TO SELECT CONNECTING ROD BEARING" .
Method of Using Plastigage

Remove engine oil and dust on crankshaft pin and the surfaces
of each bearing completely.

Cut a plastigage slightly shorter than bearing width, and place it
in crankshaft axial direction, avoiding oil holes.

Install connecting rod bearings to connecting rod and connect-
ing rod bearing cap, and tighten connecting rod bolts to the
specified torque. Refer to EM-126, "
ASSEMBLY" for the tighten-
ing procedure.
CAUTION:
Never rotate crankshaft.

Remove connecting rod cap 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 OIL CLEARANCE
Method by Calculation

Install main bearings to cylinder block and main bearing cap.
Measure the main bearing inner diameter with bearing cap bolt
tightened with main bearing beam to the specified torque. Refer
to EM-126, "
ASSEMBLY" for the tightening procedure.
(Oil clearance) = (Main bearing inner diameter) – (Crankshaft main
journal diameter)

If the measured value exceeds the limit, select main bearings
referring to the main bearing inner diameter and crankshaft jour-
nal outer diameter, so that the oil clearance satisfies the standard. Refer to EM-133, "
HOW TO SELECT
MAIN BEARING" .
Method of Using Plastigage

Remove engine oil and dust on crankshaft journal and the sur-
faces of each bearing completely.

Cut a plastigage slightly shorter than bearing width, and place it
in crankshaft axial direction, avoiding oil holes.

Install main bearing to cylinder block and main bearing cap, and
tighten main bearing bolts with main bearing beam to the speci-
fied torque. Refer to EM-126, "
ASSEMBLY" for the tightening
procedure.
CAUTION:
Never rotate crankshaft.

Remove bearing cap 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”.
PBIC1149E
Standard : 0.035 - 0.045 mm (0.0014 - 0.0018 in)
(actual clearance)
Limit : 0.065 mm (0.0026 in)
PBIC1644E
PBIC1149E

EM-144
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CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
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-126, "
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-126,
"ASSEMBLY" for the tightening procedure.

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

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

Measure “d2” at a point within block “A”.

When the value of “d1” - “d2” exceeds the limit (a large differ-
ence in dimensions), replace bolt with a new one.
CONNECTING ROD BOLT OUTER DIAMETER

Measure outer diameter “d” at position shown in the figure.

If reduction appears in a position other than “d”, regard it as “d”.

When “d” exceeds the limit (when it becomes thinner), replace
bolt with a new one.Standard : There must be crush height.
SEM502G
Standard : There must be crush height.
PBIC1646E
Limit : 0.11 mm (0.0051 in)
PBIC0911E
Standard : 7.90 - 8.00 mm (0.3110 - 0.3150 in)
Limit : 7.75 mm (0.3051 in)
PBIC0912E

PRECAUTIONS
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Revision: 2004 November 2004 FX35/FX45
[VK45DE]PRECAUTIONSPFP:00001
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectABS00DAO
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for Drain Engine CoolantABS006HV
Drain engine coolant when engine is cooled.
Precautions for Disconnecting Fuel PipingABS006HW

Before starting work, make sure no fire or spark producing items are in the work area.

Release fuel pressure before disconnecting and disassembly.

After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyABS006HX

When instructed to use special service tools, use specified tools. Always be careful to work safely, avoid
forceful or uninstructed operations.

Exercise maximum care to avoid damage to mating or sliding surfaces.

Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.

Mark and arrange disassembly parts in an organized way for easy troubleshooting and assembly.

When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be
used where noted in the step.
Precautions for Inspection, Repair and ReplacementABS006HY
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and InstallationABS006HZ

Use torque wrench to tighten bolts or nuts to specification.

EM-160
[VK45DE]
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45

When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is speci-
fied, do exactly as specified.

Replace with new gasket, packing, oil seal or O-ring.

Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for
any restriction and blockage.

Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.

Release air within route when refilling after draining engine coolant.

After repairing, start engine and increase engine speed to check engine coolant, fuel, oil, and exhaust
systems for leakage.
Parts Requiring Angle TighteningABS006I0

Use angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:
–Cylinder head bolts
–Main bearing cap bolts
–Connecting rod cap nuts
–Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angle
tightening)

Do not use a torque value for final tightening.

The torque value for these parts are for a preliminary step.

Ensure thread and seat surfaces are clean and coated with engine oil.
Precautions for Liquid GasketABS006I1
REMOVAL OF LIQUID GASKET SEALING

After removing mounting bolts and nuts, separate the mating
surface using seal cutter (SST) and remove old liquid gasket
sealing.
CAUTION:
Be careful not to damage the mating surfaces.

In areas where seal cutter (SST) is difficult to use, use plastic
hammer to lightly tap the areas where liquid gasket is applied.
CAUTION:
If for some unavoidable reason tool such as a flat-blade
screwdriver is used, be careful not to damage the mating
surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using scraper, remove old liquid gasket adhering to the liquid
gasket application surface and the mating surface.

Remove liquid gasket completely from the groove of the liquid
gasket application surface, mounting bolts, and bolt holes.
2. Wipe the liquid gasket application surface and the mating sur-
face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.
PBIC0002E
PBIC0003E

EM-180
[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2004 November 2004 FX35/FX45
INSPECTION AFTER REMOVAL
Surface Distortion

Check the surface distortion of the each exhaust manifold flange
mating surface with straightedge and feeler gauge.

If it exceeds the limit, replace exhaust manifold.
INSTALLATION
Note the following, and install in the reverse order of removal.
Exhaust Manifold Gasket
Install exhaust manifold gasket with its directional protrusion set upward.
Refer to the figure of components on former page. Refer to EM-178, "
Removal and Installation" .
Exhaust Manifold

Install exhaust manifold in numerical order as shown in the fig-
ure.
NOTE:
Tighten mounting nuts No. 1 to 4 in two steps. The numerical
order No. 9 to 12 shown second steps.
Heated Oxygen Sensor

Install heated oxygen sensors in the original position.

Install referring the following if the installation positions cannot
be identified.
*: The length of glass tube of bank 2 is longer than the one
of bank 1.
CAUTION:

Before installing a new heated oxygen sensor, clean
exhaust system threads using oxygen sensor thread
cleaner (commercial service tool: J-43897-18 or J-43897-12), and apply anti-seize lubricant (com-
mercial service tool).

Do not over torque heated oxygen sensor. Doing so may cause damage to the heated oxygen sen-
sor, resulting in “MIL” coming on.Limit : 0.3 mm (0.012 in)
PBIC1550E
PBIC1549E
Glass tube color
Heated oxygen sensor 1* : Black
Heated oxygen sensor 2 : White
PBIC2652E