service INFINITI FX35 2004 Service Manual

EM-108
[VQ35DE]
CYLINDER HEAD
Revision: 2004 November 2004 FX35/FX45
5. Using valve seat cutter set (commercial service tool) or valve
seat grinder, finish seat to the specified dimensions.
CAUTION:
When using valve seat cutter, firmly grip the cutter handle
with both hands. Then, press on the contacting surface all
around the circumference to cut in a single drive. Improper
pressure on with cutter or cutting many different times may
result in stage valve seat.
Grind to obtain the dimensions indicated.
*1 : Diameter made by intersection point of conic angles 60°
and 90°
*2 : Diameter made by intersection point of conic angles
89.5° and 120°
6. Using compound, grind to adjust valve fitting.
7. Check for normal contact again.
VALVE SPRING SQUARENESS

Set try square along the side of valve spring and rotate spring.
Measure the maximum clearance between the top face of spring
and try square.

If it exceeds the limit, replace valve spring.
SEM934C
Standard:
D1 dia.: 35 mm (1.38 in)*
1
D2 dia.: 36.6 - 36.8 mm (1.441 - 1.449 in)*2
D3 dia.: 28.7 mm (1.130 in)*1
D4 dia.: 30.6 - 30.8 mm (1.205 - 1.213 in)*2
SBIA0531E
Limit : Less than 2.1 mm (0.083 in)
PBIC0080E

EM-112
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
a. Remove passenger-side kicking plate, dash side finisher, and
glove box. Refer to EI-37, "
BODY SIDE TRIM" and IP-10,
"INSTRUMENT PANEL ASSEMBLY" .
b. Disconnect engine room harness connectors at unit sides ECM
and other.
c. Disengage intermediate fixing point. Pull out engine room har-
nesses to engine room side, and temporarily secure them on
engine.
CAUTION:

When pulling out harnesses, take care not to damage
harnesses and connectors.

After temporarily securing, cover connectors with vinyl or similar material to protect against for-
eign material adhesion.
Vehicle Underbody
1. Remove A/T fluid cooler hoses and power steering oil pump oil cooler hoses.
2. Remove exhaust front tube. Refer to EX-3, "
EXHAUST SYSTEM" .
3. Disconnect steering lower joint, and release steering shaft. Refer to PS-12, "
STEERING COLUMN" .
4. Separate transmission and propeller shaft. Refer to PR-6, "
REAR PROPELLER SHAFT" .
5. Disengage shift control linkage at selector lever side. Then, temporarily secure it on transmission, so that
it does not sag.
6. Remove rear plate cover from upper oil pan. Then, remove bolts fixing drive plate to torque converter.
7. Remove bolts fixing transmission to lower rear side of upper oil pan.
8. Remove front stabilizer. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
9. Remove LH and RH sides tie-rod ends from steering knuckle. Refer to FSU-6, "
FRONT SUSPENSION
ASSEMBLY" .
10. Remove lower ends of LH and RH sides struts from lower arms. Refer to FSU-6, "
FRONT SUSPENSION
ASSEMBLY" .
11. Remove LH and RH sides lower arms from suspension member. Refer to FSU-6, "
FRONT SUSPENSION
ASSEMBLY" .
Removal Work
1. Use a manual lift table caddy (commercial service tool) or equiv-
alently rigid tool such as a transmission jack. Securely support
bottom of suspension member and transmission.
CAUTION:
Put a piece of wood or something similar as the supporting
surface, secure a completely stable condition.
2. Remove rear member mounting bolt.
3. Remove suspension member mounting bolt and nut. Refer to
FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
4. Carefully lower jack to remove engine, transmission, and sus-
pension member assembly. When performing work, observe the
following:
CAUTION:

Confirm there is no interference with vehicle.

Make sure all connection points have been disconnected.

Keep in mind the center of vehicle gravity changes. If necessary, use jack(s) to support vehicle
at rear jacking point(s) to prevent it from falling it off lift.
SBIA0473E
PBIC0804E

ENGINE ASSEMBLY
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Revision: 2004 November 2004 FX35/FX45
Vehicle Underbody
1. Remove A/T fluid cooler hoses and power steering oil pump oil cooler hoses.
2. Remove exhaust front tube. Refer to EX-3, "
EXHAUST SYSTEM" .
3. Disconnect steering lower joint, and release steering shaft. Refer to PS-12, "
STEERING COLUMN" .
4. Separate transmission and propeller shaft. Refer to PR-6, "
REAR PROPELLER SHAFT" .
5. Disengage shift control linkage at selector lever side. Then, temporarily secure it on transmission, so that
it does not sag.
6. Remove rear plate cover from upper oil pan. Then, remove bolts fixing drive plate to torque converter.
7. Remove bolts fixing transmission to lower rear side of upper oil pan.
8. Remove LH and RH sides tie-rod ends from steering knuckle. Refer to FSU-6, "
FRONT SUSPENSION
ASSEMBLY" .
9. Remove lower ends of LH and RH sides struts from lower arms. Refer to FSU-6, "
FRONT SUSPENSION
ASSEMBLY" .
10. Remove LH and RH sides lower arms from suspension member. Refer to FSU-6, "
FRONT SUSPENSION
ASSEMBLY" .
11. Remove LH and RH sides front drive shafts from LH and RH sides knuckles. Refer to FA X - 1 2 , "
FRONT
DRIVE SHAFT" .
Removal Work
1. Use a manual lift table caddy (commercial service tool) or equiv-
alently rigid tool such as a transmission jack. Securely support
bottom of suspension member and transmission.
CAUTION:
Put a piece of wood or something similar as the supporting
surface, secure a completely stable condition.
2. Remove rear member mounting bolt.
3. Remove suspension member mounting bolt and nut. Refer to
FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
4. Carefully lower jack to remove engine, transmission, and sus-
pension member assembly. When performing work, observe the
following:
CAUTION:

Confirm there is no interference with vehicle.

Make sure all connection points have been disconnected.

Keep in mind the center of vehicle gravity changes. If necessary, use jack(s) to support vehicle
at rear jacking point(s) to prevent it from falling it off lift.
Separation Work
1. Install engine slingers into front of RH bank cylinder head and
rear of left bank cylinder head.
2. Remove power steering oil pump from engine side. Refer to PS-31, "
POWER STEERING OIL PUMP" .
3. Remove engine mounting insulator RR under side nut with power tool.
4. Lift with hoist and separate engine and transmission assembly from suspension member.
CAUTION:

Before and during this lifting, always check if any harnesses are left connected.

Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
PBIC0804E
Slinger bolts:
: 28.0 N·m (2.9 kg-m, 21 ft-lb)
SBIA0474E

EM-124
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
12. Use a seal cutter (SST) to cut away liquid gasket and remove
rear oil seal retainer.
CAUTION:

Be careful not to damage mounting surface.

If rear oil seal retainer is removed, replace it with a new
one.
NOTE:
Rear oil seal and retainer make up a single part and are
removed as an assembly.
13. Remove baffle plate from main bearing beam (2WD model).
14. Remove piston and connecting rod assembly.

Before removing piston and connecting rod assembly, check
connecting rod side clearance. Refer to EM-136, "
CONNECT-
ING ROD SIDE CLEARANCE" .
a. Position crankshaft pin corresponding to connecting rod to be
removed onto the bottom dead center.
b. Remove connecting rod cap.
c. Using a hammer handle or similar tool, push piston and connect-
ing rod assembly out to cylinder head side.
15. Remove connecting rod bearings from connecting rod and con-
necting rod cap.
CAUTION:
When removing them, note the installation position. Keep them in the correct order.
16. Remove piston rings form piston.

Use a piston ring expander (commercial service tool).
CAUTION:

When removing piston rings, be careful not to damage
piston.

Be careful not to damage piston rings by expanding
them excessively.
17. Remove piston from connecting rod as follows.
a. Using a snap ring pliers, remove snap ring.
SEM830E
EMQ0191D
PBIC0087E
PBIC0088E

EM-128
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
c. Turn all bolts another “90” degrees clockwise (Angle tightening).
CAUTION:
Use an angle wrench [SST: KV10112100 (BT8653-A)] to
check tightening angle. Do not make judgment by visual
inspection.

After installing mounting bolts, make sure that crankshaft can
be rotated smoothly by hand.

Check crankshaft end play. Refer to EM-136, "CRANKSHAFT
END PLAY" .
11. Inspect outer diameter of connecting rod bolt. Refer to EM-144,
"CONNECTING ROD BOLT OUTER DIAMETER" .
12. Install piston to connecting rod.
a. Using a snap ring pliers (commercial service tool), install a new snap ring to the groove of the piston rear
side.

Insert it fully into groove to install.
b. Install piston to connecting rod.

Using an industrial drier or similar tool, heat piston until piston pin can be pushed in by hand without
excess force [approx. 60 to 70 °C (140 to 158 °F)]. From the front to the rear, insert piston pin into pis-
ton and connecting rod.

Assemble so that the front mark on the piston crown and the
cylinder number on connecting rod are positioned as shown in
the figure.
c. Install a new snap ring to the groove of the piston front side.

Insert it fully into groove to install.

After installing, make sure connecting rod moves smoothly.
13. Using a piston ring expander (commercial service tool), install piston rings.
CAUTION:
Be careful not to damage piston.

If there is stamped mark on ring, mount it with marked side
up.
NOTE:
If there is no stamp on ring, no specific orientation is required
for installation.

Position each ring with the gap as shown in the figure refer-
ring to the piston front mark.
PBIC0921E
SEM838F
Stamped mark:
To p r i n g : —
Second ring : “R”
SEM757G
PBIC0808E

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45
22. Install knock sensor.

Install knock sensor so that connector faces front of engine.

After installing knock sensor, connect harness connector, and
lay it out to rear of engine.
CAUTION:

Do not tighten mounting bolts while holding connector.

If any impact by dropping is applied to knock sensor,
replace it with new one.
NOTE:

Make sure that there is no foreign material on the cylinder
block mating surface and the back surface of knock sensor.

Make sure that knock sensor does not interfere with other parts.
23. Install followings in reverse order of removal.
How to Select Piston and Bearing ABS00FPI
DESCRIPTION
*For the service parts, the grade for fitting cannot be selected between a piston pin and a connecting rod.
(Only 0 grade is available.) The information at the shipment from the plant is described as a reference.

The identification grade stamped on each part is the grade for the dimension measured in new condition.
This grade cannot apply to reused parts.

For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the
measurement with the values of each selection table.

For details of the measurement method of each part, the reuse standards and the selection method of the
selective fitting parts, refer to the text.
HOW TO SELECT PISTON
When New Cylinder Block Is Used
Check cylinder bore grade (“1”, “2”, or “3”) on rear side of cylinder
block, and select a piston of the same grade.
NOTE:
Piston is available with piston pin as a set for the service part. (Only
“0” grade piston pin is available.)
PBIC0810E
Selection points Selection parts Selection items Selection methods
Between cylinder block and
crankshaftMain bearingMain bearing grade
(bearing thickness)Determined by match of cylin-
der block bearing housing
grade (inner diameter of hous-
ing) and crankshaft journal
grade (outer diameter of jour-
nal)
Between crankshaft and con-
necting rodConnecting rod bearingConnecting rod bearing grade
(bearing thickness)Combining service grades for
connecting rod big end inner
diameter and crankshaft pin
outer diameter determine con-
necting rod bearing selection.
Between cylinder block and pis-
tonPiston and piston pin assembly
(Piston is available together
with piston pin as an assembly.)Piston grade
(piston outer diameter)Piston grade = cylinder bore
grade (inner diameter of bore)
*Between piston and connect-
ing rod———
PBIC0811E

EM-132
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
When Cylinder Block Is Reused
1. Measure the cylinder block bore inner diameter.
2. Determine the bore grade by comparing the measurement with
the values under the cylinder bore inner diameter of the “Piston
Selection Table”.
3. Select piston of the same grade.
Piston Selection Table
Unit: mm (in)
NOTE:

Piston is available together with piston pin as an assembly.

Piston pin (piston pin bore) grade is provided only for the parts installed at the plant. For service parts, no
piston pin grades can be selected. (Only “0” grade is available.)

No second grade mark is available on piston.
HOW TO SELECT CONNECTING ROD BEARING
When New Connecting Rod and Crankshaft are Used
Check pin diameter grade number (“0”, “1”, or “2”) stamped in front
of crankshaft, and select connecting rod bearing of same grade
number.
NOTE:
There is no grading for connecting rod big end inner diameter.
When Crankshaft and Connecting Rod Are Reused
1. Measure dimensions of the big end inner diameter of connecting rod and outer diameter of crankshaft pin
individually.
2. Confirm the big end inner diameter of connecting rod is within the standard value.
3. Apply the measured dimension to the “Connecting Rod Bearing Selection Table”.
4. Determine the grade of crankshaft pin diameter grade by comparing the measurement with the values
under the crankshaft pin outer diameter of the “Connecting Rod Bearing Selection Table”.
5. Select connecting rod bearing of the same grade.
Connecting Rod Bearing Selection Table
Unit: mm (in)
Unit: mm (in)
PBIC0812E
Grade 1 2 (or no mark) 3
Inner diameter of cylinder bore95.500 / 95.510
(3.7598 / 3.7602)95.510 / 95.520
(3.7602 / 3.7606)95.520 / 95.530
(3.7606 / 3.7610)
Outer diameter of piston95.480 / 95.490
(3.7590 / 3.7594)95.490 / 95.500
(3.7594 / 3.7598)95.500 / 95.510
(3.7598 / 3.7602)
SEM452G
Connecting rod big end inner diameter 55.000 - 55.013 (2.1654 - 2.1659)
Crankshaft pin outer diameter Grade (Mark) Dimension (Bearing thickness range) Bearing grade No. Color
51.968 - 51.974 (2.0460 - 2.0462) 0 1.500 - 1.503 (0.0591 - 0.0592) STD 0 Black

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45
Piston Pin Outer Diameter
Measure outer diameter of piston pin.
Connecting Rod Bushing Oil Clearance (Small End)
(Connecting rod bushing oil clearance) = (Piston pin bushing inner diameter) – (Piston pin outer diameter)

If the measured value exceeds the standard, replace connecting rod assembly and/or piston and piston
pin assembly.

If replacing piston and piston pin assembly, refer to EM-140, "PISTON TO CYLINDER BORE CLEAR-
ANCE" .

If replacing connecting rod assembly, refer to EM-142, "CON-
NECTING ROD BEARING OIL CLEARANCE" .
Factory installed parts grading:
Service parts apply only to grade “0”.
Unit: mm (in)
*: After installing in connecting rod
CYLINDER BLOCK DISTORTION

Using a scraper, remove gasket on the cylinder block surface, and also remove engine oil, scale, carbon,
or other contamination.
CAUTION:
Be careful not to allow gasket flakes to enter engine oil or engine coolant passages.Standard : 21.989 - 22.001 mm (0.8657 - 0.8662 in)
PBIC0117E
Standard : 0.005 - 0.017 mm (0.0002 - 0.0007 in)
Limit : 0.030 mm (0.0012 in)
PBIC0809E
Grade 0 1
Piston pin bushing inner
diameter* 22.000 - 22.006
(0.8661 - 0.8664) 22.006 - 22.012
(0.8664 - 0.8666)
Piston pin hole diameter 21.993 - 21.999
(0.8659 - 0.8661) 21.999 - 22. 005
(0.8661 - 0.8663)
Piston pin outer diameter 21.989 - 21.995
(0.8657- 0.8659) 21.995 - 22.001
(0.8659 - 0.8662)
PBIC0812E

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

EM-146
[VQ35DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2004 November 2004 FX35/FX45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00100
Standard and LimitABS004XK
GENERAL SPECIFICATIONS
Cylinder arrangementV-6
Displacement cm
3 (cu in)3,498 (213.45)
Bore and stroke mm (in)95.5 x 81.4 (3.76 x 3.205)
Valve arrangementDOHC
Firing order1-2-3-4-5-6
Number of piston ringsCompression 2
Oil 1
Number of main bearings4
Compression ratio10.3
Compression pressure
kPa (kg/cm
2 , psi)/300 rpmStandard 1,275 (13.0, 185)
Minimum 981 (10.0, 142)
Differential limit between cylinders 98 (1.0, 14)
Cylinder number
Va l v e t i m i n g
(Intake valve timing control - “OFF”)
Unit: degree
abcde f
240 238 - 6 64 8 52
SEM713A
PBIC0187E