exh INFINITI FX35 2006 Service Manual

EM-242
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CYLINDER HEAD
Revision: 2006 December 2006 FX35/FX45
6. Using compound, grind to adjust valve fitting.
7. Check again for normal contact. Refer to EM-241, "
VALVE SEAT CONTACT" .
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.
VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD

Check valve spring pressure at the specified spring height.

If the installation load or load with valve open is out of the standard, replace valve spring. Limit : 2.0 mm (0.079 in)
PBIC0080E
Standard:
Intake and exhaustFree height: 46.35 - 46.85 mm (1.8247 - 1.8444 in)
Installation height : 33.8 mm (1.331 in)
Installation load : 165 - 189 N (16.8 - 19.3 kg, 37 - 42 lb)
Height during valve open : 24.4 mm (0.961 in)
Load with valve open : 290 - 330 N (29.6 - 33.7 kg, 65 - 74 lb)
SEM113

ENGINE ASSEMBLY EM-243
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Revision: 2006 December 2006 FX35/FX45
ENGINE ASSEMBLYPFP:10001
ComponentsNBS003IO
Removal and InstallationNBS003IP
WARNING:

Situate vehicle on a flat and solid surface.

Place chocks at front and back of rear wheels.

For engines not equipped with engine slingers, attach proper slingers and bolts described in
PARTS CATALOG.
CAUTION:

Always be careful to work safely, avoid forceful or uninstructed operations.

Do not start working until exhaust system and engine coolant are cool enough.

If items or work required are not covered by the engine section, refer to the applicable sections.

Always use the support point specified for lifting.

Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at the rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-41, "Garage Jack and
Safety Stand" .
REMOVAL
Outline
At first, remove engine, transmission assembly and front final drive with front suspension member from vehicle
downward. Then separate engine from transmission.
1. Engine mounting insulator (rear) 2. Engine rear member 3. Grommet
4. Collar 5. Plate 6. Engine mounting bracket (LH)
7. Engine mounting insulator (LH) 8. Engine mounting bracket (RH) 9. Engine mounting insulator (RH)
PBIC2364E

EM-244
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ENGINE ASSEMBLY
Revision: 2006 December 2006 FX35/FX45
Preparation
1. Release fuel pressure. Refer to EC-746, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant from radiator. Refer to CO-38, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
3. Disconnect both battery terminal. Refer to SC-4, "
BATTERY" .
4. Remove crankshaft position sensor (POS) from transmission. CAUTION:

Handle carefully to avoid dropping and shocks.

Do not disassemble.

Do not allow metal powder to adhere to magnetic part at sensor tip.

Do not place sensors in a location where they are exposed to magnetism.
5. Remove the following parts:

Hood assembly; Refer to BL-13, "HOOD" .

Engine cover; Refer to EM-173, "ENGINE ROOM COVER" .

Front and rear engine undercover

Air duct (inlet), air duct and air cleaner case assembly; Refer to EM-177, "AIR CLEANER AND AIR
DUCT" .

Drive belts; Refer to EM-174, "DRIVE BELTS" .

Radiator and radiator hoses (upper and lower); Refer to CO-41, "RADIATOR" .

Front road wheels and tires
Engine Room LH
1. Disconnect engine room harness from the engine side and set it aside for easier work.
2. Disconnect heater hoses, and install plugs to avoid leakage of engine coolant.
3. Disconnect ground cable from exhaust manifold cover to vehicle.
4. Disconnect vacuum hose between vehicle and engine and set it aside.
5. Discharge refrigerant from A/C circuit. Refer to ATC-137, "
REFRIGERANT LINES" .
6. Remove A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope. Refer to AT C -
139, "Components" .
Engine Room RH
1. Disconnect fuel feed hose and EVAP hose. Refer to EM-194, "FUEL INJECTOR AND FUEL TUBE" .
CAUTION:
Fit plugs onto disconnected hose to prevent fuel leak.
2. Disconnect engine room harness from the engine side and set it aside for easier work.
3. Disconnect ground cable from exhaust manifold cover to vehicle.
4. Disconnect vacuum hose between vehicle and engine and set it aside.
5. Disconnect reservoir tank of power steering oil pump from engine, and move it aside for easier work. CAUTION:
When temporarily securing, keep reservoir tank upright to avoid a fluid leak.
Vehicle Underbody
1. Remove front cross bar. Refer to FSU-6, "FRONT SUSPENSION ASSEMBLY" .
2. Disconnect power steering oil pump from engine. Move it from its location and secure with a rope for eas- ier work. Refer to PS-31, "
Removal and Installation (VK45DE Models)" .
3. Remove A/T fluid cooler tube. Refer to AT- 2 6 6 , "
TRANSMISSION ASSEMBLY" .
4. Remove exhaust front tube and center muffler with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
5. Remove RH and LH transverse link mounting bolts and nuts. Refer to FSU-14, "
TRANSVERSE LINK" .
6. Disconnect stabilizer connecting rod lower. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
7. Remove A/T control rod at control device assembly side. Then temporarily secure it on transmission, so that it does not sag. Refer to AT- 2 2 9 , "
SHIFT CONTROL SYSTEM" .

ENGINE ASSEMBLY EM-245
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Revision: 2006 December 2006 FX35/FX45
8. Remove rear plate cover from oil pan. Then remove bolts fixing drive plate to torque converter. Refer to EM-187, "
OIL PAN AND OIL STRAINER" and AT- 2 6 6 , "TRANSMISSION ASSEMBLY" .
9. Remove transmission joint bolts which pierce at oil pan lower rear side. Refer to AT- 2 6 6 , "
TRANSMIS-
SION ASSEMBLY" .
10. Disconnect steering lower joint at power steering gear assembly side, and release steering lower shaft. Refer to PS-12, "
STEERING COLUMN" .
11. Remove rear propeller shaft. Refer to PR-7, "
REAR PROPELLER SHAFT" .

After disconnection, plug the opening on transmission side.
12. Remove front drive shaft (both side). Refer to FAX-12, "
FRONT DRIVE SHAFT" .
13. Remove front propeller shaft. Refer to PR-4, "
FRONT PROPELLER SHAFT" .
14. Remove three way catalyst (both bank). Refer to EM-183, "
EXHAUST MANIFOLD AND THREE WAY
CATALYST" .
Removal Work
1. Install engine slingers into front of cylinder head (left bank) and
front of cylinder head (right bank).
2. Lift with hoist and secure engine in position.
3. Use manual lift table caddy (commercial service tool) or equivalently rigid tool such as 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.
4. Remove engine rear member mounting bolts.
5. Remove front suspension member mounting nuts with power tool. Refer to FSU-6, "
FRONT SUSPEN-
SION ASSEMBLY" .
6. Carefully lower jack, or raise lift to remove engine, transmission front final drive and front suspension member assembly. When
performing work, observe the following caution:
CAUTION:

Confirm there is no interference with vehicle.

Make sure that all connection points have been discon-
nected.

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 the lift. Slinger bolts:
: 33.4 N·m (3.4 kg-m, 25 ft-lb)
PBIC1556E
PBIC1557E

EM-246
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ENGINE ASSEMBLY
Revision: 2006 December 2006 FX35/FX45
Separation Work
1. Change engine slinger installing to cylinder head (right bank). NOTE:
In order to keep secure position when hoisting engine.
2. Remove engine mounting insulators (RH and LH) under side nut with power tool.
3. Lift with hoist and separate engine and transmission assembly from front suspension member. CAUTION:

Before and during this lifting, always make sure that any harnesses are left connected.

Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
4. Remove alternator. Refer to SC-20, "
CHARGING SYSTEM" .
5. Remove starter motor. Refer to SC-8, "
STARTING SYSTEM" .
6. Separate engine from transmission assembly. Refer to AT- 2 6 9 , "
Removal and Installation (AWD Models)"
.
7. Remove front final drive from engine. Refer to FFD-13, "
FRONT FINAL DRIVE ASSEMBLY" .
8. Remove engine mounting insulators (RH and LH) and brackets (RH and LH) from engine with power tool.
9. Remove engine rear member and engine mounting insulator (rear) from transmission.
INSTALLATION
Note the following, and install in the reverse order of removal.

Do not allow engine mounting insulator to be damage and careful no engine oil gets on it.

For a location with a positioning pin, insert it securely into hole of mating part.

For a part with a specified installation orientation, refer to component figure in EM-243, "Removal and
Installation" .

When installing engine mounting brackets (RH and LH) on cylin-
der block, tighten two upper bolts (shown as “A” in the figure)
first. Then tighten two lower bolts (shown as “B” in the figure).
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The followings are procedures for checking fluids leak, lubricates leak and exhaust gases 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.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant. Slinger bolts:
: 33.4 N·m (3.4 kg-m, 25 ft-lb)
PBIC2447E
PBIC2365E

ENGINE ASSEMBLY EM-247
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Revision: 2006 December 2006 FX35/FX45

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.
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
Exhaust gases — Leakage —

EM-250
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CYLINDER BLOCK
Revision: 2006 December 2006 FX35/FX45
–Intake manifolds (upper and lower); Refer to EM-179, "INTAKE MANIFOLD" .
–Exhaust manifold; Refer to EM-183, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .
–Fuel tube and fuel injector assembly; Refer to EM-194, "FUEL INJECTOR AND FUEL TUBE" .
–A/C compressor; Refer to ATC-139, "Components" .
–Ignition coil; Refer to EM-191, "IGNITION COIL" .
–Rocker cover; Refer to EM-200, "ROCKER COVER" .
–Other removable brackets
NOTE:
The figure shows an example of widely use engine stand that
can hold mating surface of transmission with drive plate and rear
plate removed.
CAUTION:
Before removing the hanging chains, make sure the engine
stand is stable and there is no risk of overturning.
4. Drain engine oil. Refer to LU-27, "
Changing Engine Oil" .
5. Drain engine coolant from inside engine by removing water drain plugs “B” as shown in the figure.
6. Remove the following parts and related parts (The parts listed in step 3 are not included here.)

Oil pan and oil strainer; Refer to EM-187, "OIL PAN AND OIL STRAINER" .

Crankshaft pulley, front cover and timing chain; Refer to EM-203, "TIMING CHAIN" .

Camshaft; Refer to EM-215, "CAMSHAFT" .

Cylinder head; Refer to EM-232, "CYLINDER HEAD" .
7. Remove knock sensor.
CAUTION:
Carefully handle sensor, avoiding shocks.
8. Remove piston and connecting rod assembly as follows:

Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer
to EM-265, "
CONNECTING ROD SIDE CLEARANCE" .
a. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
b. Remove connecting rod bearing cap.
PBIC0085E
PBIC1265E

SERVICE DATA AND SPECIFICATIONS (SDS) EM-275
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Revision: 2006 December 2006 FX35/FX45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitNBS003IU
GENERAL SPECIFICATIONS
DRIVE BELTS
INTAKE MANIFOLD AND EXHAUST MANIFOLD
Unit: mm (in)
Cylinder arrangement
V- 8
Displacement cm
3 (cu in) 4,494 (274.22)
Bore and stroke mm (in) 93 x 82.7 (3.66 x 3.256)
Valve arrangement DOHC
Firing order 1-8-7-3-6-5-4-2
Number of piston rings Compression 2
Oil 1
Number of main bearings 5
Compression ratio 10.5
Compression pressure
kPa (kg/cm
2 , psi)/300 rpm Standard 1,320 (13.5, 191)
Minimum 1,130 (11.5, 164)
Differential limit
between cylinders 98 (1.0, 14)
Cylinder number
Valve timing Unit: degree
abcde f
228 240 -2 62 4 44
SEM957C
PBIC0187E
Tension of drive belts Auto adjustment by auto tensioner
Items Limit
Surface distortion Intake manifold (upper) 0.1 (0.004)
Intake manifold (lower) 0.1 (0.004)
Exhaust manifold 0.3 (0.012)

EM-276
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SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2006 December 2006 FX35/FX45
SPARK PLUG
CAMSHAFT AND CAMSHAFT BEARING
Unit: mm (in)
*: Total indicator reading
Valve Lifter
Unit: mm (in)
Valve Clearance
Unit: mm (in)
*: Approximately 80 °C (176 °F)
Make
NGK
Standard type PLFR5A-11
Hot type PLFR4A-11
Cold type PLFR6A-11
Gap (Nominal) 1.1 mm (0.043 in)
ItemsStandard Limit
Camshaft journal clearance No. 1 0.045 - 0.083 (0.0018 - 0.0033) —
No. 2, 3, 4, 5 0.030 - 0.068 (0.0012 - 0.0027) —
Camshaft journal diameter No. 1 25.938 - 25.955 (1.0212 - 1.0218) —
No. 2, 3, 4, 5 25.953 - 25.970 (1.0218 - 1.0224) —
Camshaft bracket inner diameter 26.000 - 26.021 (1.0236 - 1.0244) —
Camshaft end play 0.115 - 0.188 (0.0045 - 0.0074) —
Cam height “A” Intake 44.865 - 45.055 (1.7663 - 1.7738) 0.2 (0.008)
Exhaust 43.925 - 44.115 (1.7293 - 1.7368) 0.2 (0.008)
Camshaft runout [TIR*] — 0.02 (0.001)
Camshaft sprocket runout [TIR*] — 0.15 (0.059)
SEM671
Items Standard
Valve lifter outer diameter 33.965 - 33.975 (1.3372 - 1.3776)
Valve lifter hole diameter 34.000 - 34.016 (1.3386 - 1.3392)
Valve lifter clearance 0.025 - 0.051 (0.0010 - 0.0020)
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-279
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Revision: 2006 December 2006 FX35/FX45
Valve Dimensions
Unit: mm (in)
Valve Guide
Unit: mm (in)
Items
Standard
Valve head diameter “D” Intake 36.0 - 36.3 (1.417 - 1.429) Exhaust 31.2 - 31.5 (1.228 - 1.240)
Valve length “L” Intake 96.57 (3.8020)
Exhaust 94.50 (3.720)
Valve stem diameter “d” Intake 5.972 - 5.980 (0.2351 - 0.2354)
Exhaust 5.962 - 5.970 (0.2347 - 0.2350)
Valve seat angle “ α” Intake
45 °15 ′ - 45 °45 ′
Exhaust
Valve margin “T” Intake 1.15 - 1.45 (0.0453 - 0.0571)
Exhaust 1.85 - 2.15 (0.0728 - 0.0846)
SEM188
Items Standard Oversize (Service) [0.2 (0.008)]
Valve guide Outer diameter
10.023 - 10.034 (0.3946 -
0.3950) 10.223 - 10.234 (0.4025 -
0.4029)
Inner diameter (Finished size) 6.000 - 6.018 (0.2362 - 0.2369)
Cylinder head valve guide hole diameter 9.975 - 9.996 (0.3927 - 0.3935) 10.175 - 10.196 (0.4006 -
0.4014)
Interference fit of valve guide 0.027 - 0.059 (0.0011 - 0.0023)
Items Standard Limit
Valve guide clearance Intake 0.020 - 0.046 (0.0008 - 0.0018) 0.08 (0.003)
Exhaust 0.030 - 0.056 (0.0012 - 0.0022) 0.1 (0.004)
Projection length “L” Intake 10.1 - 10.3 (0.398 - 0.406) —
Exhaust 10.0 - 10.4 (0.394 - 0.409) —
PBIC0184E